Virus Info

Calif. Man Pleads Guilty in Fatal Swatting Case, Faces 20+ Years in Prison

Krebs on Security - 10 hours 12 min ago

A California man who pleaded guilty Tuesday to causing dozens of swatting attacks — including a deadly incident in Kansas last year — now faces 20 or more years in prison.

Tyler Raj Barriss, in an undated selfie.

Tyler Barriss, 25, went by the nickname SWAuTistic on Twitter, and reveled in perpetrating “swatting” attacks. These dangerous hoaxes involve making false claims to emergency responders about phony hostage situations or bomb threats, with the intention of prompting a heavily-armed police response to the location of the claimed incident.

On Dec. 28, 2017, Barriss placed a call from California to police in Wichita, Kansas, claiming that he was a local resident who’d just shot his father and was holding other family members hostage.

When Wichita officers responded to the address given by the caller — 1033 W. McCormick — they shot and killed 28-year-old Andrew Finch, a father of two who had done nothing wrong.

Barriss admitted setting that fatal swatting attack in motion after getting in the middle of a dispute between two Call of Duty gamers, 18-year-old Casey Viner from Ohio and Shane Gaskill, 20, from Wichita.

Viner allegedly asked Barriss to swat Gaskill. But when Gaskill noticed Barriss’ Twitter account (@swattingaccount) suddenly following him online, he tried to deflect the attack. Barriss says Gaskill allegedly dared him to go ahead with the swat, but then gave Barriss an old home address — 1033 W. McCormick — which was then being occupied by Finch’s family.

Viner and Gaskill are awaiting trial. A more detailed account of their alleged dispute is told here.

According to the Justice Department, Barriss pleaded guilty to making hoax bomb threats in phone calls to the headquarters of the FBI and the Federal Communications Commission in Washington, D.C. He also made bomb threat and swatting calls from Los Angeles to emergency numbers in Ohio, New Hampshire, Nevada, Massachusetts, Illinois, Utah, Virginia, Texas, Arizona, Missouri, Maine, Pennsylvania, New Mexico, New York, Michigan, Florida and Canada.

U.S. Attorney Stephen McAllister said Barriss faces 20 years or more in prison. Barriss is due to be sentenced Jan. 30, 2019.

Many readers following this story over the past year have commented here that the officer who fired the shot which killed Andrew Finch should also face prosecution. However, the district attorney for the county that encompasses Wichita decided in April that the officer will not face charges, and will not be named because he isn’t being charged with a crime.

As the victim of a swatting attack in 2013 and two other attempted swattings, I’m glad to finally see a swatting prosecution that may actually serve as a deterrent to this idiotic and extremely dangerous crime going forward.

It’s also great to see police departments like Seattle’s taking steps to help head off swatting incidents before they happen. Last month, the Seattle Police 911 Center launched a new program that lets residents register their address and corresponding concerns if they feel they may be the target of swatting.

But it would also be nice if more police forces around the country received additional training on exercising restraint in the use of deadly force, particularly in responding to hostage or bomb threat scenarios that have hallmarks of a swatting hoax.

For example, perpetrators of swatting often call non-emergency numbers at state and local police departments to carry out their crimes precisely because they are not local to the region and cannot reach the target’s police department by calling 911. This is exactly what Tyler Barriss did in the Wichita case and others. Swatters also often use text-to-speech (TTY) services for the hearing impaired to relay hoax swat calls, as was the case with my 2013 swatting.

Categories: Technology, Virus Info

Patch Tuesday, November 2018 Edition

Krebs on Security - 17 hours 14 min ago

Microsoft on Tuesday released 16 software updates to fix more than 60 security holes in various flavors of Windows and other Microsoft products. Adobe also has security patches available for Flash Player, Acrobat and Reader users.

As per usual, most of the critical flaws — those that can be exploited by malware or miscreants without any help from users — reside in Microsoft’s Web browsers Edge and Internet Explorer.

This week’s patch batch addresses two flaws of particular urgency: One is a zero-day vulnerability (CVE-2018-8589) that is already being exploited to compromise Windows 7 and Server 2008 systems.

The other is a publicly disclosed bug in Microsoft’s Bitlocker encryption technology (CVE-2018-8566) that could allow an attacker to get access to encrypted data. One mitigating factor with both security holes is that the attacker would need to be already logged in to the targeted system to exploit them.

Of course, if the target has Adobe Reader or Acrobat installed, it might be easier for attackers to achieve that log in. According to analysis from security vendor Qualys, there is now code publicly available that could force these two products to leak a hash of the user’s Windows password (which could then be cracked with open-source tools). A new update for Acrobat/Reader fixes this bug, and Adobe has published some mitigation suggestions as well.

In addition, Adobe pushed out a security update for Windows, Mac, Linux and Chrome versions of Flash Player. The update fixes just one vulnerability in Flash, but I’m sure most of us would rather Flash died off completely already. Adobe said it plans to end support for the plugin in 2020. Google Chrome is now making users explicitly enable Flash every time they want to use it, and by the summer of 2019 it will make users go into their settings to enable it every time they want to run it.

KrebsOnSecurity has frequently suggested that Windows users wait a day or two after Microsoft releases monthly security updates before installing the fixes, with the rationale that occasionally buggy patches can cause serious headaches for users who install them before all the kinks are worked out.

Windows 10 likes to install patches all in one go and reboot your computer on its own schedule. Microsoft doesn’t make it easy for Windows 10 users to change this setting, but it is possible. For all other Windows OS users, if you’d rather be alerted to new updates when they’re available so you can choose when to install them, there’s a setting for that in Windows Update.

In either case, it’s a good idea to get in the habit of backing up your data before installing Windows updates. Unlike last month, when many Windows users saw the contents of their “My Documents” folder erased by a buggy update, I’m not aware of any major issues this time around.

If you experience any problems installing any of these patches this month, please feel free to leave a comment about it below; there’s a good chance other readers have experienced the same and may even chime in here with some helpful tips.

Categories: Technology, Virus Info

That Domain You Forgot to Renew? Yeah, it’s Now Stealing Credit Cards

Krebs on Security - Tue, 11/13/2018 - 09:26

If you own a domain name that gets decent traffic and you fail to pay its annual renewal fee, chances are this mistake will be costly for you and for others. Lately, neglected domains have been getting scooped up by crooks who use them to set up fake e-commerce sites that steal credit card details from unwary shoppers.

For nearly 10 years, Portland, Ore. resident Julie Randall posted pictures for her photography business at julierandallphotos-dot-com, and used an email address at that domain to communicate with clients. The domain was on auto-renew for most of that time, but a change in her credit card details required her to update her records at the domain registrar — a task Randall says she now regrets putting off.

Julierandallphoto-dot-com is now one of hundreds of fake ecommerce sites set up to steal credit card details.

That’s because in June of this year the domain expired, and control over her site went to someone who purchased it soon after. Randall said she didn’t notice at the time because she was in the middle of switching careers, didn’t have any active photography clients, and had gotten out of the habit of checking that email account.

Randall said she only realized she’d lost her domain after failing repeatedly to log in to her Instagram account, which was registered to an email address at julierandallphoto-dot-com.

“When I tried to reset the account password through Instagram’s procedure, I could see that the email address on the account had been changed to a .ru email,” Randall told KrebsOnSecurity. “I still don’t have access to it because I don’t have access to the email account tied to my old domain. It feels a little bit like the last ten years of my life have kind of been taken away.”

Visit julierandallphoto.com today and you’ll see a Spanish language site selling Reebok shoes (screenshot above). The site certainly looks like a real e-commerce shop; it has plenty of product pages and images, and of course a shopping cart. But the site is noticeably devoid of any SSL certificate (the entire site is http://, not https://), and the products for sale are all advertised for roughly half their normal cost.

A review of the neighboring domains that reside at Internet addresses adjacent to julierandallphoto-dot-com (196.196.152/153.x, etc.) shows hundreds of other domains that were apparently registered upon expiration over the past few months and which now feature similar http-only online shops in various languages pimping low-priced, name brand shoes and other clothing.

Until earlier this year, wildcatgroomers-dot-com belonged to a company in Wisconsin that sold equipment for grooming snowmobile trails. It’s now advertising running shoes. Likewise, kavanaghsirishpub-dot-com corresponded to a pub and restaurant in Tennessee until mid-2018; now it’s pretending to sell cheap Nike shoes.

So what’s going here?

According to an in-depth report jointly released today by security firms Flashpoint and RiskIQ, the sites are almost certainly set up simply to siphon payment card data from unwary shoppers looking for specific designer footwear and other clothing at bargain basement prices.

“We have observed more than 800 sites hosting these brand impersonation/skimming stores since June 2018,” the report notes.

“This group’s strategy appears rather simple: the perpetrators set up a large number of stores impersonating as many popular brands as possible and drive traffic to these fake stores with a variety of methods,” the report continues. “Some visitors will attempt to make purchases, entering their payment information into the payment form where the skimmer copies it and sends it to a drop server. The payment page even displays badges from various security companies in order to appear more legitimate.”

The report tracks the work of Magecart — the name given to a collective of at least seven cybercrime groups involved in hacking Web sites to steal payment card data. On Nov. 4, KrebsOnSecurity published Who’s in Your Online Shopping Cart?, which looked at a network of hacked sites that fit the Magecart profile.

Credit card data stolen by these various Magecart groups invariably gets put up for sale at online cybercrime shops, the security firms found. In addition, some Magecart actors will sell access to hacked online stores, allowing crooks who buy this access to receive a live feed of freshly-stolen payment card details for as long as the site remains compromised.

Flashpoint and RiskIQ say they have been working with two other non-commercial anti-abuse organizations, Abuse.ch and Shadowserver to “sinkhole” or quietly assume control over hacked domains that are used for Magecart activities. These latter two organizations provide automated reporting to affected organizations. Anyone responsible for managing a range of Internet addresses can sign up at Shadowserver.org to have those ranges monitored for domains compromised by Magecart tools.

Meanwhile, as Julie Randall’s experience shows, it pays to stay on top of any domain registrations you may have. Giving up on a long-held domain name — particularly one tied to your name — is always a tough call, because you simply never know what it will be used for when it falls into someone else’s hands.

If you’re on the fence about whether to renew a domain and it’s one of several you own, it may make sense to hold onto it and simply forward any incoming traffic to a domain you do want people to visit. In the event you decide to relinquish a domain, make sure you take stock of any online accounts you created with email addresses tied to that domain and move those to another email address, as those accounts will likely come under someone else’s control when the domain expires.

Categories: Technology, Virus Info

Bug Bounty Hunter Ran ISP Doxing Service

Krebs on Security - Fri, 11/09/2018 - 13:52

A Connecticut man who’s earned bug bounty rewards and public recognition from top telecom companies for finding and reporting security holes in their Web sites secretly operated a service that leveraged these same flaws to sell their customers’ personal data, KrebsOnSecurity has learned.

In May 2018, ZDNet ran a story about the discovery of a glaring vulnerability in the Web site for wireless provider T-Mobile that let anyone look up customer home addresses and account PINs. The story noted that T-Mobile disabled the feature in early April after being alerted by a 22-year-old “security researcher” named Ryan Stevenson, and that the mobile giant had awarded Stevenson $1,000 for reporting the discovery under its bug bounty program.

The Twitter account @phobia, a.k.a. Ryan Stevenson. The term “plug” referenced next to his Twitch profile name is hacker slang for employees at mobile phone stores who can be tricked or bribed into helping with SIM swap attacks.

Likewise, AT&T has recognized Stevenson for reporting security holes in its services. AT&T’s bug bounty site lets contributors share a social media account or Web address where they can be contacted, and in Stevenson’s case he gave the now-defunct Twitter handle “@Phoobia.”

Stevenson’s Linkedin profile — named “Phobias” — says he specializes in finding exploits in numerous Web sites, including hotmail.com, yahoo.com, aol.com, paypal.com and ebay.com. Under the “contact info” tab of Stevenson’s profile it lists the youtube.com account of “Ryan” and the Facebook account “Phobia” (also now deleted).

Coincidentally, I came across multiple variations on this Phobia nickname as I was researching a story published this week on the epidemic of fraudulent SIM swaps, a complex form of mobile phone fraud that is being used to steal millions of dollars in cryptocurrencies.

Unauthorized SIM swaps also are often used to hijack so-called “OG” user accounts — usually short usernames on top social network and gaming Web sites that are highly prized by many hackers because they can make the account holder appear to have been a savvy, early adopter of the service before it became popular and before all of the short usernames were taken. Some OG usernames can be sold for thousands of dollars in underground markets.

This week’s SIM swapping story quoted one recent victim who lost $100,000 after his mobile phone number was briefly stolen in a fraudulent SIM swap. The victim said he was told by investigators in Santa Clara, Calif. that the perpetrators of his attack were able to access his T-Mobile account information using a specialized piece of software that gave them backdoor access to T-Mobile’s customer database.

Both the Santa Clara investigators and T-Mobile declined to confirm or deny the existence of this software. But their non-denials prompted me to start looking for it on my own. So naturally I began searching at ogusers-dot-com, a forum dedicated to the hacking, trading and sale of OG accounts. Unsurprisingly, ogusers-dot-net also has traditionally been the main stomping grounds for many individuals involved in SIM swapping attacks.

It didn’t take long to discover an account on ogusers-dot-com named “Ryan,” who for much of 2018 has advertised a number of different “doxing” services — specifically those aimed at finding the personal information of customers at major broadband and telecom companies.

In some of Ryan’s sales threads, fellow forum members refer to him as “Phob” or “Phobs.” In a post on May 27, Ryan says he’s willing to pay or trade for OG accounts under the name “Ryan,” “Ryans”, “RS,” “RMS” or “Stevenson” on any decent sized popular Web site. “hmu [hit me up] in a pm [private message] to talk,” Ryan urged fellow forum members.

The OG User forum account “Ryan” asking fellow members to sell or trade him any major Web site account name that includes the OG username “Ryan” or “Stevenson.”

I found that as late as June 2018 Ryan was offering a service that he claimed was capable of “doxing any usa carrier,” including Verizon, AT&T, Sprint, T-Mobile, MetroPCS and Boost Mobile.

“All I need is the number,” Ryan said of his customer data lookup service, which he sold for $25 per record. “Payment BTC [bitcoin] only.”

For $25 per record, Ryan offered fellow ogusers members the ability to look up customer records tied to any customer of the major U.S. mobile providers.

Very similar offerings were made by Phobia’s alter ego “AOLer” on the sprawling English language online hacking community Hackforums.

I first encountered Stevenson several years back while trying to work out who was responsible for calling in a phony hostage situation and sending a heavily armed police force to our Northern Virginia home in 2013. In a follow-up to that story, Stevenson admitted that he was responsible for the high-profile hack against Wired reporter Mat Honan, who documented how a hacker named Phobia had deleted his Google account and remotely erased all data from his iPhone, iPad and MacBook.

Going by the nickname “Phobiathegod” at the time, Stevenson was then part of a group of young men who routinely hijacked OG account names on Microsoft’s Xbox gaming platform, often using methods that involved tricking customer service people at the target’s mobile provider into transferring the victim’s calls to a number they controlled.

Fast forward to today, and Phobia’s main Twitter account (pictured at the top of this post) includes the phrase “the plug” next to his profile. In SIM swapping circles, a “plug” is hacker slang for an employee at a mobile phone store who can be bribed, tricked or blackmailed into assisting with an unauthorized SIM swap.

Reached via instant message on LinkedIn, Stevenson acknowledged running the ISP doxing services, but said his account on the OGusers forum was since banned and that hardly anyone took him up on his offer anyway.

“I shouldn’t have made the threads even though no one really asked for anything,” he said. “I’m on the good side. But its almost 2019 and I need to find a new hobby I can’t be bothered to look for breaches/vulns, haven’t got 1 job offer or recommendation yet.”

Asked about “the plug” reference in his Twitter profile, Stevenson suddenly stopped replying. Not long after that, the @Phobia Twitter account was deactivated.

Stevenson denied being involved in SIM swapping attacks, but it is clear Phobia was fairly tight with many people who are or until recently were at the center of this scene. In July 2018, authorities in California arrested 20-year-old Boston resident Joel Ortiz for allegedly conducting dozens of fraudulent SIM swaps and stealing at least $5 million worth of cryptocurrency from victims.

Like Phobia, Ortiz had a presence on OGusers and had acquired some of the most OG social media accounts available, including the Twitter and Instagram account names with the number zero (@0), and the OG Youtube accounts “Joel” and “X”.

On Oct 27, 2017, the Youtube account “Joel” published a 4-minute video of Stevenson dancing to a popular rap song in front of the camera. On July 5, 2018, just days before Ortiz was arrested, the Twitter account “0” gave a shout out to @Phobia on Twitter suggesting Phobia was actually tweeting using Ortiz’s “0” account.

Categories: Technology, Virus Info

U.S. Secret Service Warns ID Thieves are Abusing USPS’s Mail Scanning Service

Krebs on Security - Thu, 11/08/2018 - 00:28

A year ago, KrebsOnSecurity warned that “Informed Delivery,” a new offering from the U.S. Postal Service (USPS) that lets residents view scanned images of all incoming mail, was likely to be abused by identity thieves and other fraudsters unless the USPS beefed up security around the program and made it easier for people to opt out. This week, the U.S. Secret Service issued an internal alert warning that many of its field offices have reported crooks are indeed using Informed Delivery to commit various identity theft and credit card fraud schemes.

Image: USPS

The internal alert — sent by the Secret Service on Nov. 6 to its law enforcement partners nationwide — references a recent case in Michigan in which seven people were arrested for allegedly stealing credit cards from resident mailboxes after signing up as those victims at the USPS’s Web site.

According to the Secret Service alert, the accused used the Informed Delivery feature “to identify and intercept mail, and to further their identity theft fraud schemes.”

“Fraudsters were also observed on criminal forums discussing using the Informed Delivery service to surveil potential identity theft victims,” the Secret Service memo reads.

The USPS did not respond to repeated requests for comment over the past six days.

The Michigan incident in the Secret Service alert refers to the September 2018 arrest of seven people accused of running up nearly $400,000 in unauthorized charges on credit cards they ordered in the names of residents. According to a copy of the complaint in that case (PDF), the defendants allegedly stole the new cards out of resident mailboxes, and then used them to fraudulently purchase gift cards and merchandise from department stores.

KrebsOnSecurity took the USPS to task last year in part for not using its own unique communications method — the U.S. Mail — to validate and notify residents when someone at their address signs up for Informed Delivery. The USPS addressed that shortcoming earlier this year, announcing it had started alerting all households by mail whenever anyone signs up to receive scanned notifications of mail delivered to their address.

However, it appears that ID thieves have figured out ways to hijack identities and order new credit cards in victims’ names before the USPS can send their notification — possibly by waiting until the cards are already approved and ordered before signing up for Informed Delivery in the victim’s name.

Last month, WKMG’s Clickorlando.com wrote that a number of Belle Isle, Fla. residents reported receiving hefty bills for credit cards they never knew they had. One resident was quoted as saying she received a bill for $2,000 in charges on a card she’d never seen before, and only after that did she get a notice from the USPS saying someone at her address had signed up for Informed Delivery. The only problem was she’d never signed up for the USPS program.

“According to a police report, someone opened fraudulent credit card accounts and charged more than $14,000 and signed her neighbors up for Informed Delivery, too,” Clickorlando’s Louis Bolden explained. “Photos of what would be in their mail were going to someone else.”

Residents in Texas have reported similar experiences. Dave Lieber, author of The Watchdog column for The Dallas Morning News, said he heard from victim Chris Torraca, 58, a retired federal bank regulator from Grapevine, a town between Dallas and Ft. Worth.

“Chris discovered it after someone created an account in his name at usps.com,” Lieber wrote in a post published Nov. 2. “The thief began receiving photos of Chris’ mail and also opened a bank credit card in Chris’ wife’s name. Postal officials promote the program as a great way to prevent ID theft, but for Chris, that’s what led to it.”

As noted in last year’s story, the major weakness with Informed Delivery lies in the method the USPS uses to validate new accounts. Signing up requires an eligible resident to create a free user account at USPS.com, which asks for the resident’s name, address and an email address. The final step in validating residents involves answering four so-called “knowledge-based authentication” or KBA questions.

KrebsOnSecurity has relentlessly assailed KBA as an unreliable authentication method because so many answers to the multiple-guess questions are available on sites like Spokeo and Zillow, or via social networking profiles.

I’ve previously advised that having a security freeze on your credit file should be enough to prevent someone from registering an Informed Delivery account in your name. That’s because the USPS validates new users by asking them a series of multiple-guess questions chosen by big-three credit bureau Equifax.

But numerous readers have responded that they were still able to sign up for the service even though they had security freezes in place with Equfiax and the two other major consumer credit bureaus (Experian and TransUnion).

Normally in these cases, I’d urge readers to simply plant their flag by registering an account to claim their address. However, the USPS allows new account creations for anyone currently able to receive mail at your address, which means that claiming your address may involve registering an account with every adult present at your address.

The Dallas Morning News piece referenced earlier says Americans can opt-out of Informed Delivery by emailing the “eSafe Team” at USPS at eSafe@usps.gov. However, emails sent to this address by KrebsOnSecurity elicited no response over the past four days.

Yet, one reader received a curious response by emailing the customer service address advertised by USPS’s Informed Delivery service — informeddelivery@custhelp.com. That reader requested that USPS remove her address from eligibility for Informed Delivery, and asked the Postal Service to let her know if anyone had previously signed up for the service at her address.

According to an email shared with this author, the USPS’s customer help team responded by asking the resident to answer some of her KBA questions in plain text via email.

A response from the Informed Delivery division of the USPS’s customer service department.

Sources tell KrebsOnSecurity that the USPS is now processing some 20,000 new Informed Delivery account registrations each day, and that the USPS is continuously deleting new account registrations that it believes may be fraudulent.

There is also a potentially new security wrinkle in the USPS’s Informed Delivery service. The USPS is now generating revenue by allowing third-party companies to advertise interactive content in Informed Delivery communications (PDF) sent to email subscribers.

The program allows the USPS to automatically match scanned mail images to specific advertising campaigns. According to a review of its mailer delivery user guide (PDF), this initiative allows advertisers to publicize content that contains interactive links, which could be abused by malefactors posing as legitimate advertisers.

This graphic, taken from the Secret Service alert, describes how the USPS Informed Delivery system works.

Categories: Technology, Virus Info

Busting SIM Swappers and SIM Swap Myths

Krebs on Security - Tue, 11/06/2018 - 22:49

KrebsOnSecurity recently had a chance to interview members of the REACT Task Force, a team of law enforcement officers and prosecutors based in Santa Clara, Calif. that has been tracking down individuals engaged in unauthorized “SIM swaps” — a complex form of mobile phone fraud that is often used to steal large amounts of cryptocurrencies and other items of value from victims. Snippets from that fascinating conversation are recounted below, and punctuated by accounts from a recent victim who lost more than $100,000 after his mobile phone number was hijacked.

In late September 2018, the REACT Task Force spearheaded an investigation that led to the arrest of two Missouri men — both in their early 20s — who are accused of conducting SIM swaps to steal $14 million from a cryptocurrency company based in San Jose, Calif. Two months earlier, the task force was instrumental in apprehending 20-year-old Joel Ortiz, a Boston man suspected of stealing millions of dollars in cryptocoins with the help of SIM swaps.

Samy Tarazi is a sergeant with the Santa Clara County Sheriff’s office and a REACT supervisor. The force was originally created to tackle a range of cybercrimes, but Tarazi says SIM swappers are a primary target now for two reasons. First, many of the individuals targeted by SIM swappers live in or run businesses based in northern California.

More importantly, he says, the frequency of SIM swapping attacks is…well, off the hook right now.

“It’s probably REACT’s highest priority at the moment, given that SIM swapping is actively happening to someone probably even as we speak right now,” Tarazi said. “It’s also because there are a lot of victims in our immediate jurisdiction.”

As common as SIM swapping has become, Tarazi said he and other members of REACT suspect that there are only a few dozen individuals responsible for perpetrating most of these heists.

“For the amounts being stolen and the number of people being successful at taking it, the numbers are probably historic,” Terazi said. “We’re talking about kids aged mainly between 19 and 22 being able to steal millions of dollars in cryptocurrencies. I mean, if someone gets robbed of $100,000 that’s a huge case, but we’re now dealing with someone who buys a 99 cent SIM card off eBay, plugs it into a cheap burner phone, makes a call and steals millions of dollars. That’s pretty remarkable.”

Indeed, the theft of $100,000 worth of cryptocurrency in July 2018 was the impetus for my interview with REACT. I reached out to the task force after hearing about their role in assisting SIM swapping victim Christian Ferri, who is president and CEO of San Francisco-based cryptocurrency firm BlockStar.

In early July 2018, Ferri was traveling in Europe when he discovered his T-Mobile phone no longer had service. He’d later learn that thieves had abused access to T-Mobile’s customer database to deactivate the SIM card in his phone and to activate a new one that they had in their own mobile device.

Soon after, the attackers were able to use their control over his mobile number to reset his Gmail account password. From there, the perpetrators accessed a Google Drive document that Ferri had used to record credentials to other sites, including a cryptocurrency exchange. Although that level of access could have let the crooks steal a great deal more from Ferri, they were simply after his cryptocoins, and in short order he was relieved of approximately $100,000 worth of coinage.

We’ll hear more about Ferri’s case in a moment. But first I should clarify that the REACT task force members did not discuss with me the details of Mr. Ferri’s case — even though according to Ferri a key member of the task force we’ll meet later has been actively investigating on his behalf. The remainder of this interview with REACT pivots off of Ferri’s incident mainly because the details surrounding his case help clarify some of the most confusing and murky aspects of how these crimes are perpetrated — and, more importantly, what we can do about them.

WHO’S THE TARGET?

SIM swapping attacks primarily target individuals who are visibly active in the cryptocurrency space. This includes people who run or work at cryptocurrency-focused companies; those who participate as speakers at public conferences centered around Blockchain and cryptocurrency technologies; and those who like to talk openly on social media about their crypto investments.

REACT Lieutenant John Rose said in addition to or in lieu of stealing cryptocurrency, some SIM swappers will relieve victims of highly prized social media account names (also known as “OG accounts“) — usually short usernames that can convey an aura of prestige or the illusion of an early adopter on a given social network. OG accounts typically can be resold for thousands of dollars.

Rose said even though a successful SIM swap often gives the perpetrator access to traditional bank accounts, the attackers seem to be mainly interested in stealing cryptocurrencies.

“Many SIM swap victims are understandably very scared at how much of their personal information has been exposed when these attacks occur,” Rose said. “But [the attackers] are predominantly interested in targeting cryptocurrencies for the ease with which these funds can be laundered through online exchanges, and because the transactions can’t be reversed.”

FAKE IDs AND PHONY NOTES

The “how” of these SIM swaps is often the most interesting because it’s the one aspect of this crime that’s probably the least well-understood. Ferri said when he initially contacted T-Mobile about his incident, the company told him that the perpetrator had entered a T-Mobile store and presented a fake ID in Ferri’s name.

But Ferri said once the REACT Task Force got involved in his case, it became clear that video surveillance footage from the date and time of his SIM swap showed no such evidence of anyone entering the store to present a fake ID. Rather, he said, this explanation of events was a misunderstanding at best, and more likely a cover-up at some level.

Caleb Tuttle, a detective with the Santa Clara County District Attorney’s office, said he has yet to encounter a single SIM swapping incident in which the perpetrator actually presented ID in person at a mobile phone store. That’s just too risky for the attackers, he said.

“I’ve talked to hundreds of victims, and I haven’t seen any cases where the suspect is going into a store to do this,” Tuttle said.

Tuttle said SIM swapping happens in one of three ways. The first is when the attacker bribes or blackmails a mobile store employee into assisting in the crime. The second involves current and/or former mobile store employees who knowingly abuse their access to customer data and the mobile company’s network. Finally, crooked store employees may trick unwitting associates at other stores into swapping a target’s existing SIM card with a new one.

“Most of these SIM swaps are being done over the phone, and the notes we’re seeing about the change in the [victim’s] account usually are left either by [a complicit] employee trying to cover their tracks, or because the employee who typed in that note actually believed what they were typing.” In the latter case, the employee who left a note in the customer’s account saying ID had been presented in-store was tricked by a complicit co-worker at another store who falsely claimed that a customer there had already presented ID.

DARK WEB SOFTWARE?

Ferri said the detectives investigating his SIM swap attack let on that the crooks responsible had at some point in the attack used “specialized software to get into T-Mobile’s customer database.”

“The investigator said there were employees of the company who had built a special software tool that they could use to connect to T-Mobile’s customer database, and that they could use this software from their home or couch to log in and see all the customer information there,” Ferri recalled. “The investigator didn’t explain exactly how it worked, but it was basically a backdoor entrance that they were reselling on the Dark Web, and it bypassed whatever security there was and let them go straight into the customer database.”

Asked directly about this mysterious product supposedly being offered on the Dark Web, the REACT task force members put our phone interview on hold for several minutes while they privately huddled to discuss the question. When they finally took me off mute, a member of the task force instead answered a different question that I’d asked much earlier in the interview.

When pressed about the software again, there was a long, uncomfortable silence. Then Detective Tuttle spoke up.

“We’re not going to talk about that,” he said curtly. “Deal with it.”

T-Mobile likewise declined to comment on the allegation that thieves had somehow built software which gave them direct access to T-Mobile customer data. However, in at least three separate instances over the past six months, T-Mobile has been forced to acknowledge incidents of unauthorized access to customer records.

In August 2018, T-Mobile published a notice saying its security team discovered and shut down unauthorized access to certain information, including customer name, billing zip code, phone number, email address, account number, account type (prepaid or postpaid) and/or date of birth. A T-Mobile spokesperson said at the time that this incident impacted roughly two percent of its subscriber base, or approximately 2.5 million customers.

In May 2018, T-Mobile fixed a bug in its Web site that let anyone view the personal account details of any customer. The bug could be exploited simply by adding the phone number of a target to the end of a Web address used by one of the company’s internal tools that was nevertheless accessible via the open Internet. The data provided by that tool reportedly also included references to account PINs used by customers as a security question when contacting T-Mobile customer support.

In April 2018, T-Mobile fixed a related bug in its public Web site that allowed anyone to pull data tied to customer accounts, including the user’s account number and the target phone’s IMSI — a unique number that ties subscribers to their specific mobile device.

A DISCONNECT AT THE CARRIER LEVEL

I wanted to hear from the REACT team what they thought the mobile carriers could be doing to better detect and prevent SIM swaps. I received a range of responses.

“This is a really serious problem among the carriers, the ease with which SIM swaps can occur,” Lt. Rose said. “If you’re working at a mobile phone store and making $12 an hour and suddenly someone offers you $400 to do a single SIM swap, that can seem like a pretty sweet deal if you don’t also have any morals or sense of conscience. ”

Rose said mobile phone stores could cut down on these crimes in much the same way that potential victims can combat SIM swapping: By relying on dual authentication.

“Having one employee who can conduct these SIM swaps without any kind of oversight seems to be the real problem,” Rose said. “And it seems like [the carriers] could really put a stop to it if there were more checks and balances to prevent that. It’s still very, very easy to SIM swap, and something has to be done because it’s just too simple. Someone needs to light a fire under some folks to get these protections put in place.”

Sgt. Samy said a big challenge for mobile stores is balancing customer service with account security. After all, he said, customers legitimately request SIM swaps all the time — such as when a phone is lost or stolen, or when the customer upgrades to a phone that requires a SIM card of a different size.

“There are probably tens of thousands of legitimate SIM swaps a day or week, versus a couple of fake ones,” Samy said. “Ultimately, these attacks rely on the human element and the ability of an employee to override whatever security is in place.”

Samy added that in many cases there’s a vast disconnect between a mobile company’s corporate offices and security policies at the local store level.

“These are multi-billion companies, and in any big company it’s fairly common that the left hand doesn’t know what the right hand is doing,” he said. “Without knowing the ins and outs of how these companies work, it’s very easy for us to say they should have two people authorizing each SIM swap. But I agree anything that makes [the criminal SIM swappers] have to show up in person to do this would ideally be the best scenario.”

TWO-FACTOR BREAKDOWN

Asked what he would have done differently about his attack, Ferri said he’d have set up his Google accounts to use app-based two-factor authentication, instead of relying merely on his mobile phone to receive that second factor via text message.

“I had app-based two factor set up on my [cryptocurrency] exchange accounts, but not Gmail,” he said. “Also, I’d probably use something like Google Voice for anything that requires a phone number for a second factor.”

In fact, this is the precise advice offered by Joel Ortiz, the alleged SIM swapper mentioned earlier who was arrested this year by the REACT Task Force. According to published reports, Ortiz taught many other SIM swappers how to perfect their techniques — and how to avoid being victimized themselves by rival SIM swappers. I included the specifics from Ortiz’s advice in my Aug. 16 column, Hanging Up On Mobile in the Name of Security.

Det. Tuttle said in a typical SIM swap attack the perpetrators have studied their target in advance, much the same way bank robbers might spend a few days observing the comings and goings at a specific bank branch before making their move.

“Usually, once a SIM swap is done they’ve already done enough research and social engineering on victims to know what accounts the victim has — whether it’s Gmail or Dropbox or whatever,” Tuttle said. “The next thing they do is go to these accounts and use the ‘forgot password’ function and request a password reset link via SMS to gain access to those accounts. From there, they start looking for cryptocurrency exchange passwords, private keys, and reseed codes to steal cryptocurrencies.

Tuttle said it’s important for people to use something other than text messages for two-factor authentication on their email accounts when stronger authentication options are available. He advises people instead use a mobile app like Authy or Google Authenticator to generate the one-time code. Or better yet, a physical security key if that’s an option.

“Let’s say I have a Coinbase account and I have it set up to require a password and a one-time code generated by Authy, but my Gmail account tied to that Coinbase account doesn’t use Authy and just uses SMS for two-factor,” Tuttle explained. “Once I SIM swap that person, I can often also use that access to [request a link via SMS] to reset his Gmail password, and then set up Authy on the Gmail account using my device. Now I have access to your Coinbase account and can effectively lock you out of both.”

Dave Berry, a task force member and investigator with the Santa Clara County District Attorney’s office, said cryptocurrency enthusiasts should be storing most of their crypto funds in hardware wallets, and storing private keys needed to spend or transfer those funds on a device that doesn’t touch the Internet. Printing out and properly securing a set of one-time codes that can be used if a mobile device is lost or stolen is a good idea as well.

But most of all, Berry said, people should stop using SMS when more robust two-factor options are available.

“There may be some inconvenience factor there, but if you don’t have any two-factor going over text message, you really do limit the potential damage that way,” Berry said.

ROBBING HOODS

Sgt. Samy says one big problem is that it’s still not common knowledge that SMS-based two-factor can leave users with a false sense of security.

“Text-based two-factor is still the industry standard way of doing it, because it’s super convenient and you don’t need to be computer savvy to figure it out,” Samy said. “I would say most people who aren’t following the SIM swapping problem have no idea their phone and associated accounts can be taken over so easily. It’s not like the person who leaves a laptop in plain view in the car, and when the laptop gets stolen you say well someone just encouraged the thief in that case. In this case, the victim didn’t download malware or fall for some stupid phishing email. They just end up getting compromised because they followed the industry standard.”

Lt. Rose notes that this dynamic helps some SIM swapping thieves justify their crimes.

“We see this a lot, where by their own words they’ll blame victims for not protecting themselves properly, saying it’s the victim’s fault he got robbed,” Rose said.

On top of that, Rose said many crooks involved in SIM swapping tend to adopt the view that they are stealing from fabulously wealthy individuals who will still be well off after they’re relieved of some of their crypto assets — as with the case of bitcoin entrepreneur Michael Terpin, who lost $24 million in cryptocurrencies after getting hit by an unauthorized SIM swap earlier this year (allegedly at the hands of a crooked AT&T retail store employee).

But Detective Tuttle said Terpin’s example is an outlier.

“It’s not just stealing millions from millionaires,” Tuttle said. “Most of the victims are not in that category. Most are people who are having their life’s savings or their child’s college savings stolen. They’re victims who have families and 9-5 jobs, and who got into the crypto space because they were investing and trying to make ends meet. We only tend to hear or read about these attacks when they result in millions of dollars in losses. But the reality is there’s a lot of other thefts involving much more diminished amounts that are really negatively impacting peoples’ lives.”

For Erin West, deputy district attorney with the Santa Clara DA’s office, this dynamic is a major factor driving the work of the REACT task force. West says she believes her group is a having a strong deterrent effect, and that the individuals who persist in carrying out these crimes are all keenly aware of the group’s work.

“We’re out there arresting these people and finding new leads every day,” West said. “We’re zealously prosecuting them, and we expect this will have a deterrent effect because we’re fortunate enough to have federal partners that we can now do this on a national level and make arrests out of state. Rest assured that if a victim in touched in Santa Clara county, we will find you and prosecute you no matter where you are.”

Categories: Technology, Virus Info

Who’s In Your Online Shopping Cart?

Krebs on Security - Sun, 11/04/2018 - 12:10

Crooks who hack online merchants to steal payment card data are constantly coming up with crafty ways to hide their malicious code on Web sites. In Internet ages past, this often meant obfuscating it as giant blobs of gibberish text that was obvious even to the untrained eye. These days, a compromised e-commerce site is more likely to be seeded with a tiny snippet of code that invokes a hostile domain which appears harmless or that is virtually indistinguishable from the hacked site’s own domain.

Before going further, I should note that this post includes references to domains that are either compromised or actively stealing user data. Although the malcode implanted on these sites is not designed to foist malicious software on visitors, please be aware that this could change at a moment’s notice. Anyone seeking to view the raw code on sites referenced here should proceed with caution; using an online source code viewer like this one can let readers safely view the HTML code on any Web page without actually rendering it in a Web browser.

As its name suggests, asianfoodgrocer-dot-com offers a range of comestibles. It also currently includes a spicy bit of card-skimming code that is hosted on the domain zoobashop-dot-com. In this case, it is easy to miss the malicious code when reviewing the HTML source, as it fits neatly into a single, brief line of code.

Zoobashop is also a presently hacked e-commerce site. Based in Accra, Ghana, zoobashop bills itself as Ghana’s “largest online store.” In addition to offering great deals on a range of electronics and home appliances, it is currently serving a tiny obfuscated script called “js.js” that snarfs data submitted into online forms.

As sneaky as this attack may be, the hackers in this case did not go out of their way to make the domain hosting the malicious script blend in with the surrounding code. However, increasingly these data-slurping scripts are hidden behind fully fraudulent https:// domains that are custom-made to look like they might be associated with content delivery networks (CDNs) or web-based scripts, and include terms like “jquery,” “bootstrap,” and “js.”

Publicwww.com is a handy online service that lets you search the Web for sites running snippets of specific code. Searching publicwww.com for sites pulling code from bootstrap-js-dot-com currently reveals more than 50 e-commerce sites seeded with this malicious script. A search at publicwww for the malcode hosted at js-react-dot-com indicates the presence of this code on at least a dozen online merchants.

Sometimes, the malicious domain created to host a data-snarfing script mimics the host domain by referencing a doppelganger Web site name. For example, check out the source code for the e-commerce site bargainjunkie-dot-com and you’ll notice at the bottom that it pulls a malicious script from the domain “bargalnjunkie-dot-com,” where the “i” in “bargain” is sneakily replaced with a lowercase “L”.

In many cases, running a reverse search for other domain names where the doppelganger domain is hosted reveals additional compromised hosts, or other methods of compromising them. For example, the look-alike domain bargalnjunkie-dot-com is hosted on the address 46.161.40.49, which is the home to several domains, including payselector-dot-com and billgetstatus-dot-com.

Payselector-dot-com and billgetstatus-dot-com were apparently registered so that they appear related to online payment services. But both of these domains actually host complex malicious scripts that are loaded in an obfuscated way on a number of Web sites — including the ballet enthusiast store balletbeautiful-dot-com. Interestingly, the Internet address hosting the payselector and billgetstatus domains — the aforementioned 46.161.40.49 — also hosts the doppelganger domain “balletbeautlful-dot-com,” again with the “i” replaced by a lowercase “L”.

A “reverse DNS” lookup of the IP address 46.161.40.49, compliments of Farsight Security.

The malicious scripts loaded from payselector-dot-com and billgetstatus-dot.com are obfuscated with a custom HTML function — window.atob — which scrambles the code referencing those domains names on hacked sites. While the presence of “window.atob” in the source code of a Web site is not itself an indicator of compromise, a search for this code via publicwww.com is revealing and further review suggests there are dozens of sites currently compromised in this manner.

For example, that search points to the domain for online clothier evisu-dot-com, whose HTML source includes the following code snippet:

If you cut and paste the gibberish text that’s between the quotations in the highlighted portion of the screenshot above into the site base64decode.net, you’ll see this jumble of junk text decodes to apitstatus-dot-com, yet another dodgy domain custom-made to look like a legitimate function of a regular e-commerce site.

Revisiting the source code for the domain balletbeautiful-dot.com, we can see that it also includes this “window.atob” code followed by some obfuscated text. A paste of this gobbledegook in Base64decode.net shows that it decodes to…you guessed it: balletbeautlful-dot-com.

Sometimes, antivirus products will detect the presence of these malicious scripts and block users from visiting compromised sites, but for better or worse none of the sites I mentioned here currently are flagged as malicious by any of the more than five dozen antivirus tools at the file-scanning service virustotal.com.

Security firm Symantec refers to these attacks as “formjacking,” which it describes as the use of malicious Javascript to steal credit card details and other information from payment forms on the checkout pages of e-commerce sites. In September, Symantec said it blocked almost a quarter of a million instances of attempted formjacking since mid-August 2018.

Another security company — RiskIQ — has written extensively about these attacks and has attributed several recent compromises — including the hack of Web sites for British Airways and geek gear vendor Newegg — to a group it calls “Magecart.”

It’s unclear if the compromises detailed in this post are related to the work of that crime gang. In any case, I like RiskIQ’s comparison of these attacks to ATM skimmers, a type of crime that has held my fascination for years now.

“Traditionally, criminals use devices known as card skimmers—devices hidden within credit card readers on ATMs, fuel pumps, and other machines people pay for with credit cards every day—to steal credit card data for the criminal to later collect and either use themselves or sell to other parties,” RiskIQ’s Yonathan Klijnsma writes. “Magecart uses a digital variety of these devices.”

I like the comparison to skimming because online merchants are being targeted in major way right now precisely because of efforts to make it hard for thieves to make money from fraud involving counterfeit debit and credit cards. The United States is the last of the G20 nations to make the transition to more secure chip-based payment cards, and virtually every other country that has already been through that shift has seen a marked increase in online fraud as a result.

Heads up to anyone responsible for administering a Web site: There are options available to help monitor your Web site for unauthorized changes. Tools like Tripwire and AIDE can detect new or modified files, but many of these formjacking attacks involve the insertion of code in existing Web pages. Subscription services like wewatchyourwebsite.com and watchdo.gs may be more helpful here.

In case anyone’s wondering, all of the hacked sites mentioned here have been notified. In many cases, the contact details for the owners of these sites is hidden behind WHOIS privacy protection, and alerting victims via Facebook or filling out contact forms elicits no response. In other instances, the alerted site cleaned up part of the compromise but left key malicious elements intact — without even acknowledging efforts made to notify them.

I realize this post is quite a bit more technical than most at KrebsOnSecurity. I’m explaining my process for finding these sites because there appear to be so many compromised by these methods that the only feasible way to get them cleaned up quickly may be to crowdsource the effort, given that more online shops are being newly compromised each day.

I burned through several days this week following the virtual rabbit holes dug by whoever is responsible for this ongoing e-commerce crime spree, and it seems to me finding and alerting all the compromised businesses could keep an entire team of people busy for some time. But I am just one guy, and this is a thankless task.

KrebsOnSecurity would like to thank @breachmessenger for their assistance in researching this story.

Categories: Technology, Virus Info

SMS Phishing + Cardless ATM = Profit

Krebs on Security - Fri, 11/02/2018 - 09:03

Thieves are combining SMS-based phishing attacks with new “cardless” ATMs to rapidly convert phished bank account credentials into cash. Recent arrests in Ohio shed light on how this scam works.

A number of financial institutions are now offering cardless ATM transactions that allow customers to withdraw cash using nothing more than their mobile phones. But this also creates an avenue of fraud for bad guys, who can leverage phished or stolen account credentials to add a new phone number to the customer’s account and then use that added device to siphon cash from hijacked accounts at cardless ATMs.

Image: Mastercard.us

In May 2018, Cincinnati, Ohio-based financial institution Fifth Third Bank began hearing complaints from customers who were receiving text messages on their phones that claimed to be from the bank, warning recipients that their accounts had been locked.

The text messages contained a link to unlock their accounts and led customers to a Web site that mimicked the legitimate Fifth Third site. That phishing site prompted visitors to enter their account credentials — including usernames, passwords, one-time passcodes and PIN numbers — to unlock their accounts.

All told, that scam netted credentials for approximately 125 Fifth Third customers — most of them in or around the Cincinnati area. The crooks then used the phished data to withdraw $68,000 from 17 ATMs in Illinois, Michigan, and Ohio in less than two weeks using Fifth Third’s cardless ATM function.

According to court documents, the SMS phishing and fraudulent withdrawals at cardless ATMs continued through October 2018, earning the scammers an additional $40,000. That is, until the bank zeroed in on four individuals suspected of perpetrating the crime spree. Shortly thereafter, four men were arrested in connection with the crimes.

One of them, identified as Ciprian-Raducu Antoche-Grecu, was apprehended in a Cincinnati suburb while standing at the same Fifth Third ATM where he was previously observed conducting fraudulent activity, investigators allege.

In January 2017, KrebsOnSecurity told the story of a California woman who saw nearly $3,000 drained from her account via a cardless ATM operated by Chase Bank. In that incident, the thieves didn’t even need to know her ATM PIN; the thieves were able to use a phone number and mobile device they controlled and associate it with her Chase account simply by supplying her username and password.

A graphic from Mastercard touting the potential benefits of cardless ATM transactions.

As the January 2017 story illustrates, cardless ATM scams aren’t new, but they are becoming more prevalent as more banks turn to cardless ATM technology as a convenience for customers. This time last year, cardless ATMs were offered mainly by the big banks, and then only at some of their ATMs. Now, many smaller regional and local banks have upgraded their cash machines to enable the new technology.

Card giant Mastercard says its polling (PDF) suggests that 78 percent of consumers would rather use a cardless ATM solution than carry a physical card. I would wager that most U.S. cardholders still haven’t even heard of cardless ATMs, let alone could say whether or not their bank offers such transactions.  Curious whether your bank supports cardless transactions? A quick online search for your bank’s name and the term “cardless ATM” should provide some clues.

In the meantime, remember never to respond to requests for personal or financial information sent via email, text message or over the phone. Phone-based phishing attacks are getting way more clever and are even snaring technology experts, as last month’s story shows. When in doubt, contact your financial institution directly either in person or by phone using the number on the back of your card.

Categories: Technology, Virus Info

Equifax Has Chosen Experian. Wait, What?

Krebs on Security - Thu, 11/01/2018 - 10:47

A year after offering free credit monitoring to all Americans on account of its massive data breach that exposed the personal information of nearly 148 million people, Equifax now says it has chosen to extend the offer by turning to a credit monitoring service offered by a top competitor — Experian. And to do that, it will soon be sharing with Experian contact information that affected consumers gave to Equifax in order to sign up for the service.

The news came in an email Equifax is sending to people who took the company up on its offer for one year of free credit monitoring through its TrustedID Premier service.

Here’s the introduction from that message:

“We recently sent you an email advising you that, until further notice, we would be extending the free TrustedID® Premier subscription you enrolled in following the September 7, 2017 cybersecurity incident. We are now pleased to let you know that Equifax has chosen Experian®, one of the three nationwide credit bureaus, to provide you with an additional year of free credit monitoring service. This extension is at no cost to you , and you will not be asked to provide a credit card number or other payment information. You have until January 31, 2019 to enroll in this extension of free credit monitoring through IDnotify™, a part of Experian.”

Equifax says it will share the name, address, date of birth, Social Security number and self-provided phone number and email address with Experian for anyone who signed up for its original TrustedID Premier offering. That is, unless those folks affirmatively opt-out of having that information transferred from Equifax to Experian.

But not to worry, Equifax says: Experian already has most of this data.

“Experian currently has and is using this information (except phone number and email address) in the fulfillment of the Experian file monitoring which is part of your current service with TrustedID Premier,” Equifax wrote in its email. “Experian will only use the information Equifax is sharing to confirm your identity and securely enroll you in the Experian product, and will not use it for marketing or solicitation.”

Even though people who don’t opt-out of the new IDnotify offer will have their contact information automatically shared with Experian, TrustedID Premier users must still affirmatively enroll in the new program before then end of January 2019 — the date the TrustedID product expires.

Equifax’s FAQ on the changes is available here.

EQUIFERIAN®?

Talk about the blind leading the blind. It appears that in order to opt-out of the information sharing or enroll in the new Experian program, people will need to click a customized link in the email that Equifax is sending to TrustedID enrollees. I’m not aware of another method for opting our or signing up, but I’ve asked Equifax for clarification on that point.

Consumers who don’t want Equifax sharing their phone number and email address with Experian need to opt-out by clicking a link in an email.

Fundamentally, I see no problem with people using these credit monitoring services as long as they are free. Credit monitoring services can be useful in helping consumers dig themselves out of the mess caused by identity theft.

The chief danger I see in relying on credit monitoring services to stop identity theft, however, is that these services traditionally have not been very good at doing that. As I’ve written ad nauseam, credit monitoring services are more useful at detecting *when* someone opens a new line of credit in your name. What this means is that while they might let you know when someone has stolen your identity, they’re not likely to prevent that from occurring in the first place.

The best mechanism for preventing identity thieves from creating and abusing new accounts in your name is to freeze your credit file with Experian, Equifax and TransUnion. This process is now free for all Americans, and simply blocks potential creditors from viewing your credit file.

Since very few creditors are willing to grant new lines of credit without being able to determine how risky it is to do so, freezing your credit file with the Big Three is a great way to stop all sorts of ID theft shenanigans. I explain in much greater detail how to freeze your files and what’s involved with that in this post from September.

Please note that if you haven’t yet frozen your credit and you’d like to take advantage of this offer from Equifax/Experian, it’s a good idea to enroll in the IDnotify first, as it’s often not possible to enroll in credit monitoring services *after* you’ve frozen your credit. That said, Equifax’s FAQ suggests this might not be the case, noting that if your Equifax credit report is frozen, the security freeze will stay in place for people who enroll in the new program.

I imagine this arrangement should help the credit bureaus steer more people away from freezing their and toward their respective “credit lock” services, which the bureaus have marketed as just as good as a credit freeze but also easier to use.

All three big bureaus tout their credit lock services as an easier and faster alternative to freezes — mainly because these alternatives aren’t as disruptive to their bottom lines. According to a recent post by CreditKarma.com, consumers can use these services to quickly lock or unlock access to credit inquiries, although some bureaus can take up to 48 hours. In contrast, they can take up to five business days to act on a freeze request, although in my experience the automated freeze process via the bureaus’ freeze sites has been more or less instantaneous (assuming the request actually goes through).

TransUnion and Equifax both offer free credit lock services, while Experian’s is free for 30 days and $19.99 for each additional month. However, TransUnion says those who take advantage of their free lock service agree to receive targeted marketing offers. What’s more, TransUnion also pushes consumers who sign up for its free lock service to subscribe to its “premium” lock services for a monthly fee with a perpetual auto-renewal.

Unsurprisingly, the bureaus’ use of the term credit lock has confused many consumers; this was almost certainly by design. But here’s one basic fact consumers should keep in mind about these lock services: Unlike freezes, locks are not governed by any law, meaning that the credit bureaus can change the terms of these arrangements when and if it suits them to do so.

Did you receive this offer from Equifax/Experian? Are you planning to opt out or enroll? Sound off in the comments below.

Categories: Technology, Virus Info

Mirai Co-Author Gets 6 Months Confinement, $8.6M in Fines for Rutgers Attacks

Krebs on Security - Fri, 10/26/2018 - 14:36

The convicted co-author of the highly disruptive Mirai botnet malware strain has been sentenced to 2,500 hours of community service, six months home confinement, and ordered to pay $8.6 million in restitution for repeatedly using Mirai to take down Internet services at Rutgers University, his former alma mater.

Paras Jha, in an undated photo from his former LinkedIn profile.

Paras Jha, a 22-year-old computer whiz from Fanwood, N.J., was studying computer science at Rutgers when he developed Mirai along with two other convicted co-conspirators. According to sentencing memo submitted by government prosecutors, in his freshman and sophomore years at Rutgers Jha used a collection of hacked devices to launch at least four distributed denial-of-service (DDoS) attacks against the university’s networks.

Jha told investigators he carried out the attacks not for profit but purely for personal, juvenile reasons: “He reveled in the uproar caused by the first attack, which he launched to delay upper-classmen registration for an advanced computer science class he wanted to take,” the government’s sentencing memo stated. “The second attack was launched to delay his calculus exam. The last two attacks were motivated in part by the publicity and outrage” his previous attacks had generated. Jha would later drop out of Rutgers after struggling academically.

In January 2017, almost a year before Jha’s arrest and guilty plea, KrebsOnSecurity identified Jha as the likely co-author of Mirai — which sprang to notoriety after a record-smashing Sept. 2016 attack that sidelined this Web site for nearly four days.

That story posited that Jha, operating under the pseudonyms “Ogmemes” and “OgRichardStallman,” gave interviews with a local paper in which he taunted Rutgers and encouraged the school to consider purchasing some kind of DDoS protection service to ward off future attacks. At the time, Jha was president and co-founder of ProTraf Solutions, a DDoS mitigation firm that provided just such a service.

The sentence handed down by a Newark federal judge today comes on the heels of Jha’s September 2018 sentencing in an Alaska court for his admitted role in creating, wielding and selling access to Mirai — malware which enslaves poorly-security Internet of Things (IoT) devices like security cameras and digital video recorders for use in extremely powerful attacks capable of knocking most Web sites offline.

Prosecutors in the Alaska case said Jha and two co-conspirators did not deserve jail time for their crimes because the trio had cooperated fully with the government and helped investigators with multiple other ongoing cybercrime investigations. The judge in that case agreed, giving Jha and each of his two co-defendants sentences of five years probation, 2,500 hours of community service, and $127,000 in fines.

Prosecutors in Alaska argued that Jha had completely turned over a new leaf, noting that he was once again attending school and had even landed a job at an unnamed cybersecurity company. Sending him to prison, they reasoned, would only disrupt a remarkable transformation for a gifted young man.

However, the punishment meted out today for the Rutgers attack requires Jha to remain sequestered in his parent’s New Jersey home for the next six months — with excursions allowed only for medical reasons. The sentence also piles on an additional 2,500 hours of community service. Further, Jha will be on the hook to pay $8.6 million in restitution — the amount Rutgers estimated it cost the university to respond to Jha’s attacks.

Jha could not be immediately reached for comment. But his attorney Robert Stahl told KrebsOnSecurity today’s decision by the Newark court was “thoughtful and reasoned.”

“The judge noted that Paras’ cooperation has been much more extensive and valuable than any he’s ever seen while on the bench,” Stahl said. “He won’t be going to back to school right now or to his job.”

It is likely that Jha’s creation will outlive his probation and community service. After the Sept. 2016 attack on KrebsOnSecurity and several other targets, Jha and his cohorts released the source code for Mirai in a bid to throw investigators off their trail. That action has since spawned legions of copycat Mirai botnets and Mirai malware variants that persist to this day.

Categories: Technology, Virus Info

How Do You Fight a $12B Fraud Problem? One Scammer at a Time

Krebs on Security - Thu, 10/25/2018 - 10:11

The fraudsters behind the often laughable Nigerian prince email scams have long since branched out into far more serious and lucrative forms of fraud, including account takeovers, phishing, dating scams, and malware deployment. Combating such a multifarious menace can seem daunting, and it calls for concerted efforts to tackle the problem from many different angles. This post examines the work of a large, private group of volunteers dedicated to doing just that.

According to the most recent statistics from the FBI‘s Internet Crime Complaint Center, the most costly form of cybercrime stems from a complex type of fraud known as the “Business Email Compromise” or BEC scam. A typical BEC scam involves phony e-mails in which the attacker spoofs a message from an executive at a company or a real estate escrow firm and tricks someone into wiring funds to the fraudsters.

The FBI says BEC scams netted thieves more than $12 billion between 2013 and 2018. However, BEC scams succeed thanks to help from a variety of seemingly unrelated types of online fraud — most especially dating scams. I recently interviewed Ronnie Tokazowski, a reverse engineer at New York City-based security firm Flashpoint and something of an expert on BEC fraud.

Tokazowski is an expert on the subject thanks to his founding in 2015 of the BEC Mailing List, a private discussion group comprising more than 530 experts from a cross section of security firms, Internet and email providers, banks and law enforcement agents that is dedicated to making life more difficult for scammers who perpetrate these schemes.

Earlier this month, Tokazowski was given the JD Falk award by the Messaging Malware Mobile Anti-Abuse Working Group (M3AAWG) for his efforts in building and growing the BEC List (loyal readers here may recognize the M3AAWG name: KrebsOnSecurity received a different award from M3AAWG in 2014). M3AAWG presents its JD Falk Award annually to recognize “a project that helps protect the internet and embodies a spirit of volunteerism and community building.”

Here are some snippets from our conversation:

Brian Krebs (BK): You were given the award by M3AAWG in part for your role in starting the BEC mailing list, but more importantly for the list’s subsequent growth and impact on the BEC problem as a whole. Talk about why and how that got started and evolved.

Ronnie Tokazowski (RT): The why is that there’s a lot of money being lost to this type of fraud. If you just look at the financial losses across cybercrime — including ransomware, banking trojans and everything else — BEC is number one. Something like 63 percent of fraud losses reported to the FBI are related to it.

When we started the list around Christmas of 2015, it was just myself and one FBI agent. When we had our first conference in May 2016, there were about 20 people attending to try to figure out how to tackle all of the individual pieces of this type of fraud.

Fast forward to today, and the group now has about 530 people, we’ve now held three conferences, and collectively the group has directly or indirectly contributed to over 100 arrests for people involved in BEC scams.

BK: What did you discover as the group began to coalesce?

RT: As we started getting more and more people involved, we realized BEC was much broader than just phishing emails. These guys actually maintain vast networks of money mules, technical and logistical infrastructure, as well as tons of romance scam accounts that they have to maintain over time.

BK: I want to ask you more about the romance scam aspect of BEC fraud in just a moment, because that’s one of the most fascinating cogs in this enormous crime machine. But I’m curious about what short-term goals the group set in identifying the individuals behind these extremely lucrative scams?

RT: We wanted to start a collaboration group to fight BEC, and really a big part of that involved just trying to social engineer the actors and get them to click on links that we could use to find out more about them and where they’re coming from.

BK: And where are they coming from? When I’ve written about BEC scams previously and found most of them trace back to criminals in Nigeria, people often respond that this is just a stereotype, prejudice, or over-generalization. What’s been your experience?

RT: Right. A lot of people think Nigeria is just a scapegoat. However, when we trace back phone numbers, IP addresses and language usage, the vast majority of that is coming out of Nigeria.

BK: Why do you think so much of this type of fraud comes out of Nigeria?

RT: Well, corruption is a big problem there, but also there’s this subculture where doing this type of wire fraud isn’t seen as malicious exactly. There’s not only a lot of poverty there, but also a very strong subculture there to support this type of fraud, and a lot of times these actors justify their actions by seeing it as attacking organizations, and not the people behind those organizations. I think also because they rationalize that individuals who are victimized will ultimately get their money back. But of course in a lot of cases, they don’t.

BK: Is that why so many of these Nigerian prince, romance and BEC scams aren’t exactly worded in proper English and tend to read kind of funny sometimes?

RT: While a lot of the scammers are typically from Nigeria, the people doing the actual spamming side typically come from a mix of other countries in the region, including Algeria, Morocco and Tunisia. And it’s interesting looking at these scams from a language perspective, because you have them writing in English that’s also influenced by [people who speak] French and Arabic. So that explains why the emails often are written in poor English whereas to them it seems normal.

BK: Let’s talk about the romance scams. How does online dating fraud fit into the BEC scam?

RT: [The fraudsters] will impersonate both men and women who are single, divorced or widowed. But their primary target is female widows who are active on social media sites.

BK: And in most of these cases the object of the phony affection is what? To create a relationship so that the other person feels comfortable accepting money or moving money on behalf of their significant other, right?

RT: Yes, they end up being recruited as money mules. Or maybe they’re groomed in order to set up a bank account for their lovers. We’ve dealt with multiple cases where we see a money mule account coming through and then look that person up on social media and quickly able to see they were friends with a clearly fake profile or a profile that we’ve already identified as a BEC scammer. So there is a very strong tie between these BEC scams and romance scams.

BK: Are all of the romance scam victims truly unwitting, do you think?

RT: With the mules who don’t one hundred percent know what they’re doing, they might be [susceptible to the suggestion] hey, could you open this account for me. The second type of mule can be on the payroll [of the scam organization] and getting a cut of the money for assisting in the wiring of money [to the fraudsters’ accounts.]

BK: I saw in one of your tweets you mentioned personally interacting with some of these BEC scammers.

RT: Yeah, a few weeks ago I was running a romance scammer who reached out and added me as a friend on Facebook. The story they were telling was that this person was a single mom with a kid aged 43 looking for companionship. By day 4 [of back and forth conversations] they were asking me to send them iTunes gift cards.

BK: Hah! So what happened then?

RT: I went to my local grocery store, which was all too willing to help. When you’re trying to catch scammers, it doesn’t cost the store a dime to give you non-activated iTunes gift cards.

BK: That sounds like fun. Beyond scamming the scammers to learn more about their operations and who they are, can you talk about what you and other members of the BEC working group have been trying to accomplish to strategically fight this kind of fraud?

RT: What we found was with BEC fraud it’s really hard to find ownership, because there’s no one entity that’s responsible for shutting it down. There are a lot of moving parts to the BEC scam, including lots of romance scam social media accounts, multiple email providers, and bank accounts tied to money mules that get pulled into these scams.

The feds get a lot of flack for not making arrests, the private sector gets criticized for not doing more, and a lot of people are placing the blame on social media for not doing more. But the truth is that in order to address BEC as a whole we all have to work together on that. It’s like the old saying: How do you eat an elephant? One bite at a time.

BK: So the primary goal of the group was to figure out ways to get better and faster at shutting down the resources used by these fraudsters?

RT: Correct. The main [focus] we set when starting this group was the sheer length of time it takes for law enforcement to put together a subpoena, which can take up to 30 days to process and get the requested information back that allows you to see who was logged into what account, when and from where. At the same time, these bad actors can stand up a bunch of new accounts each day. So the question was how do we figure out a good way to start whacking the email accounts and moving much faster than the subpoena process allows.

The overall goal of the BEC group has been to put everyone in the same room, from social media and email providers to banks and security companies, so that we can attack this problem from all sides at once.

BK: I see. In other words, making it easier for companies that have a role to play to be proactive in shutting down resources that are used by the BEC scammers.

RT: Exactly. And so far we have helped to close hundreds of accounts, helped contribute directly or indirectly to dozens of arrests, and prevented millions of dollars in fraud.

BK: At the same time, this work must feel like a somewhat Sisyphean task. I mean, it costs the bad guys almost nothing to set up new accounts, and there seem to be no limit to the number of people participating in various aspects of these scams.

RT: That’s true, and even with 530 people from dozens of companies and organizations in this BEC working group now it sometimes doesn’t feel like we’re making enough of an impact. But the way I look at it is for each account we get taken down, that’s someone’s father or mother who’s not being scammed and losing their inheritance to a Nigerian scammer.

The one thing I’m proud of is we’ve now operated for three years and have had very few snafus. It’s been very cool to watch the amount of trust that organizations have put into this group and to be along for the ride there in seeing so many competitors actually working together.

———————————————————————————————————————————————–

Anyone interested in helping in the fight against BEC fraud and related scams should check out the Web site 419eater.com, which includes a ton of helpful resources for learning more. My favorite section of the site is the Letters Archive, which features often hilarious email threads between the scammers and “scam baiters” — volunteers dedicated to stringing the scammers along and exposing them publicly.

Related reading:

Business Email Compromise: Putting a Wisconsin Case Under the Microscope

Spy Service Exposes Nigerian Yahoo Boys

Yahoo Boys Have 419 Facebook Friends

Deleted Facebook Cybercrime Groups Had 300,000 Members

Where Did That Scammer Get Your Email Address?

Categories: Technology, Virus Info

Who Is Agent Tesla?

Krebs on Security - Mon, 10/22/2018 - 13:55

A powerful, easy-to-use password stealing program known as Agent Tesla has been infecting computers since 2014, but recently this malware strain has seen a surge in popularity — attracting more than 6,300 customers who pay monthly fees to license the software. Although Agent Tesla includes a multitude of features designed to help it remain undetected on host computers, the malware’s apparent creator seems to have done little to hide his real-life identity.

The proprietors of Agent Tesla market their product at agenttesla-dot-com, selling access to the software in monthly licenses paid for via bitcoin, for prices ranging from $15 to $69 per month depending on the desired features.

The Agent Tesla Web site emphasizes that the software is strictly “for monitoring your personel [sic] computer.” The site’s “about” page states that Agent Tesla “is not a malware. Please, don’t use for computers which is not access permission.” To backstop this disclaimer, the site warns that any users caught doing otherwise will have their software licenses revoked and subscriptions canceled.

At the same time, the Agent Tesla Web site and its 24/7 technical support channel (offered via Discord) is replete with instances of support personnel instructing users on ways to evade antivirus software detection, use software vulnerabilities to deploy the product, and secretly bundle the program inside of other file types, such as images, text, audio and even Microsoft Office files.

A description of some of the options posted to the Agent Tesla sales Web site.

In August 2018, computer security firm LastLine said it witnessed a 100 percent increase in Agent Tesla instances detected in the wild over just a three month period.

“Acting as a fully-functional information stealer, it is capable of extracting credentials from different browsers, mail, and FTP clients,” LastLine wrote. “It logs keys and clipboards data, captures screen and video, and performs form-grabbing (Instagram, Twitter, Gmail, Facebook, etc.) attacks.”

Most of the options included in Agent Tesla revolve around stealth, persistence, evading security tools, spreading to other computers, or tampering with system settings.

I CAN HAZ TESLA

The earliest versions of Agent Tesla were made available for free via a Turkish-language WordPress site that oddly enough remains online (agenttesla.wordpress-dot-com), although its home page now instructs users to visit the current AgentTesla-dot-com domain. Not long after that WordPress site was erected, its author(s) began charging for the software, accepting payments via a variety of means, including PayPal, Bitcoin and even wire transfer to several bank accounts in Turkey.

Historic WHOIS Web site registration records maintained by Domaintools.com show that the current domain for the software — agenttesla-dot-com — was registered in 2014 to a young man from Antalya, Turkey named Mustafa can Ozaydin, and to the email address mcanozaydin@gmail.com. Sometime in mid-2016 the site’s registration records were hidden behind WHOIS privacy services [full disclosure: Domaintools is a previous advertiser on KrebsOnSecurity].

That Gmail address is tied to a Youtube.com account for a Turkish individual by the same name who has uploaded exactly three videos over the past four years. In one of them, uploaded in October 2017 and titled “web panel,” Mr. can Ozaydin demonstrates how to configure a Web site. At around 3:45 in the video, we can see the purpose of this demonstration is to show people one way to install an Agent Tesla control panel to keep track of systems infected with the malware.

Incidentally, the administrator of the 24/7 live support channel for Agent Tesla users at one point instructed customers to view this same video if they were having trouble figuring out how to deploy the control panel.

The profile picture shown in that Youtube account is remarkably similar to the one displayed on the Twitter account “MCanOZAYDIN.” This Twitter profile makes no mention of Agent Tesla, but it does state that Mustafa can Ozaydin is an “information technology specialist” in Antalya, Turkey.

That Twitter profile also shows up on a Facebook account for a Mustafa can Ozaydin from Turkey. A LinkedIn profile for a person by the same name from Antalya, Turkey states that Mr. can Ozaydin is currently a “systems support expert” for Memorial Healthcare Group, a hospital in Istanbul.

KrebsOnSecurity first reached out for comment to all of these accounts back in August 2018, but received no reply. Repeated attempts to reach those accounts this past week also elicited no response.

MALWARE OR BENIGN REMOTE ACCESS TOOL?

Many readers here have taken the view that tools like Agent Tesla are functionally no different from more mainstream “remote administration tools” like GoToMyPC, VNC, or LogMeIn, products that are frequently used by tech support personnel to remotely manage one or more systems to which those personnel legitimately have access rights.

U.S. federal prosecutors, meanwhile, have adopted a different position. Namely, when someone selling a remote administration tool begins instructing customers on how to install the product in ways that are arguably deceptive (such as through the use of software exploits, spam or disguising the tool as another program), the proprietor has crossed a legal line and can be criminally prosecuted under computer misuse laws.

In previous such cases, the prosecution’s argument has hinged on the procurement of chat logs showing that the software seller knew full well his product was being used to infect computers without the users’ knowledge or permission.

Last week, a Lexington, Ky. man was sentenced to 30 months in federal prison after pleading guilty to conspiracy to unlawfully access computers in connection with his admitted authorship of a remote access tool called LuminosityLink.

Colton Grubbs, 21, admitted to selling his software for $39.99 apiece to more than 6,000 customers in at least 78 different countries. LuminosityLink allowed his customers to record the keys that victims pressed on their keyboards, spy on victims using their computers’ cameras and microphones, view and download the computers’ files, and steal names and passwords used to access websites.

“Directly and indirectly, Grubbs offered assistance to his customers on how to use LuminosityLink for unauthorized computer intrusions through posts and group chats on websites such as HackForums,” the Justice Department wrote in a press release about the sentencing. Grubbs must also forfeit the proceeds of his crimes, including 114 bitcoin, presently valued at more than $725,000.

Around the time that Grubbs stopped responding to support requests on Hackforums, federal prosecutors were securing a guilty plea against Taylor Huddleston, a then 27-year-old programmer from Arkansas who sold the “NanoCore RAT.”  Like Grubbs, Huddleston initially pleaded not guilty to computer intrusion charges, arguing that he wasn’t responsible for how customers used his products.

That is, until prosecutors presented Skype logs showing that Huddleston routinely helped buyers work out how to use the tools to secretly compromise remote computers. Huddleston is currently serving a 33-month sentence after pleading guilty to selling the NanoCore RAT.

Categories: Technology, Virus Info
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