Posts Tagged: Paypal


20
Aug 13

How Not to DDoS Your Former Employer

Pro tip: If you’re planning to launch a debilitating denial-of-service attack against your former employer, try not to “like” the Facebook page of the DDoS-for-hire Web service that you intend to use in the assault.

Tell that to Kevin Courtois, a 28-year-old from Three Rivers, Quebec who was arrested earlier this year for allegedly launching a volley of cyber attacks against his former company over a nine month period beginning in May 2012. Courtois did not respond to requests for comment.

Courtois’s former employer — Concepta Inc., an information security firm based in his hometown — was not the only one suffering from attacks. The assaults — which ranged in size from a few gigabits per second to up to 10 gbps — grew so large that they began significantly affecting Concepta’s Internet service provider  — another Three Rivers company called Xittel. Eventually, the attacks shifted to targeting Xittel directly.

Xittel later hired Robert Masse, a security consultant from Montreal who spoke about the details of this case in a talk at the Black Hat security conference in Las Vegas last month. Xittel and Concepta compared notes and told Masse they’d settled on Cortois as the likely culprit. One potential clue: Cortois had left Concepta to start his own company that specialized in DDoS protection services. 

Masse said when he began his investigation he noticed that Courtois had liked the Facebook page of demolitionstresser.com, a now defunct booter site that redirected him to….wait for it…ragebooter.net. For those of you who haven’t read my story on ragebooter.net and its proprietor Justin Poland, please check it out after reading this piece. In that story, Poland claimed to have been working for the FBI, and even to have backdoored his own service so that FBI agents could snoop on user activity.

Masse said he decided to contact Poland to see what he might be willing to disclose about any ragebooter.net customer who’d been using the service to launch attacks against Concepta and Xittel. Masse said he created an account at ragebooter.net, funded it with $200 via the site’s default payment method — Paypal — and then reached out to Poland via his support handle in Skype. Would Poland be willing to sell the logs of a particular customer? Say….anyone who happened to be currently using ragebooter to attack a certain Internet address block in Three Rivers, Quebec?

MasseyStrings According to Masse, Poland initially replied that, why yes, there was an attack going on that very moment against that IP address. “For sure, this morning,” Poland wrote in a Skype chat. “First attack November 25 (2012).” Masse said Poland then pasted the account information for a user named…wait for it…”concepta2.” Concepta2 had signed up with ragebooter using the email address traverse2000@hotmail.com, according to the Ragebooter.net users database that was leaked earlier this year. A historic reverse WHOIS record lookup at domaintools.com, that email address was used to register at least 36 different Web sites, most of them originally registered to a Kevin Courtois from Quebec.

Masse said Poland quickly thought better of posting his customers’ information in a Skype chat with a stranger, and deleted the message a few seconds after he’d pasted it. But Masse was able to retrieve a copy of the message by dumping the memory cache for his Skype client on his OS X machine.

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14
Aug 13

Buying Battles in the War on Twitter Spam

The success of social networking community Twitter has given rise to an entire shadow economy that peddles dummy Twitter accounts by the thousands, primarily to spammers, scammers and malware purveyors. But new research on identifying bogus accounts has helped Twitter to drastically deplete the stockpile of existing accounts for sale, and holds the promise of driving up costs for both vendors of these shady services and their customers.

Image: Twitterbot.info

Image: Twitterbot.info

Twitter prohibits the sale and auto-creation of accounts, and the company routinely suspends accounts created in violation of that policy. But according to researchers from George Mason University, the International Computer Science Institute and the University of California, Berkeley, Twitter traditionally has done so only after these fraudulent accounts have been used to spam and attack legitimate Twitter users.

Seeking more reliable methods of detecting auto-created accounts before they can be used for abuse, the researchers approached Twitter last year for the company’s blessing to purchase credentials from a variety of Twitter account merchants. Permission granted, the researchers spent more than $5,000 over ten months buying accounts from at least 27 different underground sellers.

In a report to be presented at the USENIX security conference in Washington, D.C. today, the research team details its experience in purchasing more than 121,000 fraudulent Twitter accounts of varying age and quality, at prices ranging from $10 to $200 per one thousand accounts.

The research team quickly discovered that nearly all fraudulent Twitter account merchants employ a range of countermeasures to evade the technical hurdles that Twitter erects to stymie the automated creation of new accounts.

“Our findings show that merchants thoroughly understand Twitter’s existing defenses against automated registration, and as a result can generate thousands of accounts with little disruption in availability or instability in pricing,” the paper reads. “We determine that merchants can provide thousands of accounts within 24 hours at a price of $0.02 – $0.10 per account.”

SPENDING MONEY TO MAKE MONEY

For example, to fulfill orders for fraudulent Twitter accounts, merchants typically pay third-party services to help solve those squiggly-letter CAPTCHA challenges. I’ve written here and here about these virtual sweatshops, which rely on low-paid workers in China, India and Eastern Europe who earn pennies per hour deciphering the puzzles.

topemailThe Twitter account sellers also must verify new accounts with unique email addresses, and they tend to rely on services that sell cheap, auto-created inboxes at HotmailYahoo and Mail.ru, the researchers found. “The failure of email confirmation as a barrier directly stems from pervasive account abuse tied to web mail providers,” the team wrote. “60 percent of the accounts were created with Hotmail, followed by yahoo.com and mail.ru.”

Bulk-created accounts at these Webmail providers are among the cheapest of the free email providers, probably because they lack additional account creation verification mechanisms required by competitors like Google, which relies on phone verification. Compare the prices at this bulk email merchant: 1,000 Yahoo accounts can be had for $10 (1 cent per account), and the same number Hotmail accounts go for $12. In contrast, it costs $200 to buy 1,000 Gmail accounts.

topcountriesFinally, the researchers discovered that Twitter account merchants very often spread their new account registrations across thousands of Internet addresses to avoid Twitter’s IP address blacklisting and throttling. They concluded that some of the larger account sellers have access to large botnets of hacked PCs that can be used as proxies during the registration process.

“Our analysis leads us to believe that account merchants either own or rent access to thousands of compromised hosts to evade IP defenses,” the researchers wrote.

Damon McCoy, an assistant professor of computer science at GMU and one of the authors of the study, said the top sources of the proxy IP addresses were computers in developing countries like India, Ukraine, Thailand, Mexico and Vietnam.  “These are countries where the price to buy installs [installations of malware that turns PCs into bots] is relatively low,” McCoy said.

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3
Jun 13

Cashout Service for Ransomware Scammers

There are 1,001 ways to swindle people online, but the hardest part for crooks is converting those ill-gotten gains into cash. A new service catering to purveyors of ransomware — malware that hijacks PCs until victims pay a ransom – levees a hefty fee for laundering funds from these scams, and it does so by abusing a legitimate Web site that allows betting on dog and horse races in the United States.

Ransonware scam spoofing the DHS to obtain Moneypak/unlock codes.

Ransonware scam spoofing the DHS to obtain Moneypak/unlock codes. Source: botnets.fr

Ransomware is most often distributed via hacked or malicious sites that exploit browser vulnerabilities.  Typically, these scams impersonate the Department of Homeland Security or the FBI (or the equivalent federal investigative authority in the victim’s country) and try to frighten people into paying fines to avoid prosecution for supposedly downloading child pornography and pirated content.

Ransomware locks the victim’s PC until he either pays the ransom or finds a way to remove the malware. Victims are instructed to pay the ransom by purchasing a prepaid MoneyPak card, sold at everything from Walgreens to Wal-Mart (some scams tell victims to pay using a PaySafe or Ukash card). Victims are then told to send the attackers a 14-digit voucher code that allows the bad guys to redeem those MoneyPak vouchers for cash.

Trouble is, taking funds off of a MoneyPak requires either spending it at stores that accept it, or hooking it up to a U.S. bank account, to PayPal, or to a prepaid Visa or Mastercard. What’s more, most miscreants who are even halfway competent at spreading ransomware can expect to collect dozens of MoneyPak codes per day, so cashing out via the above-mentioned methods simply does not scale well for successful bad guys (particularly those who live outside of the United States).

Last week, I stumbled on a ransomware cashout service hosted in Minsk, Belarus that helps simplify the process. It checks the balances of MoneyPak codes by abusing a feature built into betamerica.com, a legitimate and legal site where gamblers can go to bet on dog and horse races in the United States.  Specifically, the ransomware cashout service queries a page at betamerica.com that lets customers fund their betting accounts using MoneyPak.

I reached out to Betamerica.com’s operations team and spoke with a woman who would only give her name as “Leslie.” Leslie said the company had already flagged the account that was being used to check the MoneyPak voucher codes.

“This account was already flagged as some type of bot or compromise, and was set to non-wagering,” she said, explaining that this status prevents customer accounts from placing bets on races. Leslie said Betamerica scrutinizes the Moneypak activity because fraudsters have tried to use the codes to launder money.

“We are pretty diligent, because in the past we have had [individuals who] will try to do a Moneypak deposit and then do a withdrawal, basically trying to launder it. Bottom line is that money has to be wagered. It’s not going to be returned to you in another form.”

When I first encountered this ransomware cashout service and discovered the connection to Betamerica, I was sure the miscreants were trying to launder money through the betting site. But after my conversation with Leslie, the true scope of this ransomware operation began to come into focus. It appears to involve the cooperation of several sets of actors:

MoneyPak cashout scheme.

Scheme to cash out $300 MoneyPak vouchers obtained from ransomware victims.

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16
May 13

Ragebooter: ‘Legit’ DDoS Service, or Fed Backdoor?

On Monday, I profiled asylumbooter.com, one of several increasingly public DDoS-for-hire services posing as Web site “stress testing” services. Today, we’ll look at ragebooter.net, yet another attack service except for one secret feature which sets it apart from the competition: According the site’s proprietor, ragebooter.net includes a hidden backdoor that lets the FBI monitor customer activity.

Ddos-for-hire site ragebooter.net

Ddos-for-hire site ragebooter.net

This bizarre story began about a week ago, when I first started trying to learn who was responsible for running RageBooter. In late March, someone hacked and leaked the users table for ragebooter.net. The database showed that the very first user registered on the site picked the username “Justin,” and signed up with the email address “primalpoland@gmail.com.”

That email address is tied to a now-defunct Facebook account for 22-year-old Justin Poland from Memphis, Tenn. Poland’s personal Facebook account used the alias “PRIMALRAGE,” and was connected to a Facebook page for an entity called Rage Productions. Shortly after an interview with KrebsOnSecurity, Poland’s personal Facebook page was deleted, and his name was removed from the Rage Productions page.

Ragebooter.net’s registration records are hidden behind WHOIS privacy protection services. But according to a historic WHOIS lookup at domaintools.com, that veil of secrecy briefly fell away when the site was moved behind Cloudflare.com, a content distribution network that also protects sites against DDoS attacks like the ones Ragebooter and its ilk help to create (as I noted in Monday’s story, some of the biggest targets of booter services are in fact other booter services). For a brief period in Oct. 2012, the WHOIS records showed that ragebooter.net was registered by a Justin Poland in Memphis.

I “friended” Poland on Facebook and said I wanted to interview him. He accepted my request and sent me a chat to ask why I wanted to speak with him. I said I was eager to learn more about his business, and in particular why he thought it was okay to run a DDoS-for-hire service. While we were chatting, I took the liberty of perusing his profile pictures, which included several of a large tattoo he’d had inked across the top of his back — “Primal Rage” in a typeface fashioned after the text used in the Transformers movie series.

Poland is serious about his business.

Poland is serious about his business.

“Since it is a public service on a public connection to other public servers this is not illegal,” Poland explained, saying that he’d even consulted with an attorney about the legality of his business. When I asked whether launching reflected DNS attacks was okay, Poland said his service merely took advantage of the default settings of some DNS servers.

“Nor is spoofing the sender address [illegal],” he wrote. “If the root user of the server does not want that used they can simple disable recursive DNS. My service is a legal testing service. How individuals use it is at there [sic] own risk and responsibilitys [sic].  I do not advertise this service anywhere nor do I entice or encourage illegal usage of the product. How the user uses it is at their own risk. I provide logs to any legal law enforcement and keep logs for up to 7 days.”

The conversation got interesting when I asked the logical follow-up question: Had the police or federal authorities ever asked for information about his customers?

That was when Poland dropped the bomb, informing me that he was actually working for the FBI.

“I also work for the FBI on Tuesdays at 1pm in memphis, tn,” Poland wrote. “They allow me to continue this business and have full access. The FBI also use the site so that they can moniter [sic] the activitys [sic] of online users.. They even added a nice IP logger that logs the users IP when they login.”

When I asked Poland to provide more information that I might use to verify his claims that he was working for the FBI, the conversation turned combative, and he informed me that I wasn’t allowed to use any of the information he’d already shared with me. I replied that I hadn’t and wouldn’t agree that any of our discussion was to be off the record, and he in turn promised to sue me if I ran this story. That was more or less the end of that conversation.

As to the relative legality of booter services, I consulted Mark Rasch, a security expert and former attorney for the U.S. Department of Justice. Rasch said companies hire stress testing services all the time, but usually as part of a more inclusive penetration testing engagement. In such engagements, Rasch said, it is common for the parties conducting the tests to insist upon and obtain beforehand a “get out of jail free card,” essentially a notarized letter from the customer stating that the testing firm was hired to break into and otherwise probe the security and stability of the targeted Web site.

“This is also why locksmiths generally force you to show ID that proves your address before they’ll break into a house for you,” Rasch said. “The standard in the security industry is not only to require proof that you own the sites that are going to be shut down or attacked, but also an indemnification provision.”

On Monday, I pinged Mr. Poland once more, again using Facebook’s chat function. I wanted to hear more about his claim that he was working for the feds. To my surprise, he gave me the number of a Memphis man he referred to as his FBI contact, a man Poland said he knew only as “Agent Lies.”

The man who answered at the phone number supplied by Poland declined to verify his name, seemed peeved that I’d called, and demanded to know who gave me his phone number. When I told him that I was referred to him by Mr. Poland, the person on the other end of the line informed me that he was not authorized to to speak with the press directly. He rattled off the name and number of the press officer in the FBI’s Memphis field office, and hung up.

Just minutes after I spoke with “Agent Lies,” Justin dropped me a line to say that he could not be my ‘friend’ any longer. “I have been asked to block you. Have a nice day,” Poland wrote in a Facebook chat, without elaborating. His personal Facebook page disappeared moments later.

Not long after that, I heard back from Joel Siskovic, spokesman for the Memphis FBI field office, who said he could neither confirm nor deny Poland’s claims. Siskovic also declined to verify whether the FBI had an Agent Lies.

“People come forward all the time and make claims they are working with us, and sometimes it’s true and sometimes it’s not,” Siskovic said. “But it wouldn’t be prudent for us to confirm that we have individuals helping us or assisting us, either because they’re being good citizens or because they’re somehow compelled to.”

Update, June 1: A little Googling shows that there is in fact an FBI Agent Lies in the Memphis area. Many of the public cases that Agent Lies has testified in appear to be child-exploitation related, such as this one (PDF).

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10
Aug 12

‘Booter Shells’ Turn Web Sites into Weapons

Hacked Web sites aren’t just used for hosting malware anymore. Increasingly, they are being retrofitted with tools that let miscreants harness the compromised site’s raw server power for attacks aimed at knocking other sites offline.

It has long been standard practice for Web site hackers to leave behind a Web-based “shell,” a tiny “backdoor” program that lets them add, delete and run files on compromised server. But in a growing number of Web site break-ins, the trespassers also are leaving behind simple tools called “booter shells,” which allow the miscreants to launch future denial-of-service attacks without the need for vast networks of infected zombie computers.

absoboot.com’s configuration page

According to Prolexic, an anti-DDoS company I’ve been working with for the past few weeks to ward off attacks on my site, with booter shells DDoS attacks can be launched more readily and can cause more damage, with far fewer machines. “Web servers typically have 1,000+ times the capacity of a workstation, providing hackers with a much higher yield of malicious traffic with the addition of each infected web server,” the company said in a recent advisory.

The proliferation of booter shells has inevitably led to online services that let paying customers leverage these booter shell-backdoored sites. One such service is absoboot.com, also reachable at twbooter.com. Anyone can sign up, fund the account with Paypal or one of several other virtual currencies, and start attacking. The minimum purchase via PayPal is $15, which buys you about 5 hours worth of keeping a site down or at least under attack.

If you’d prefer to knock an individual internet user offline as opposed to a Web site, absoBoot includes a handy free tool that lets users discover someone’s IP address. Just select an image of your choice (or use the pre-selected image) and send the target a customized link that is specific to your absoBoot account. The link to the picture is mapped to a domain crafted to look like it takes you to imageshack.us; closer inspection of the link shows that it fact ends in “img501.ws,” and records the recipients IP address if he or she views the image. Continue reading →


21
Jun 12

A Closer Look: Email-Based Malware Attacks

Nearly every time I write about a small- to mid-sized business that has lost hundreds of thousands of dollars after falling victim to a malicious software attack, readers want to know how the perpetrators broke through the victim organization’s defenses, and which type of malware paved the way. Normally, victim companies don’t know or disclose that information, so to get a better idea, I’ve put together a profile of the top email-based malware attacks for each day over the past month.

Top malware email attacks in past 30 days. Source: UAB

This data draws from daily reports compiled by the computer forensics and security management students at the University of Alabama at Birmingham, a school I visited last week to give a guest lecture and to gather reporting for a bigger project I’m chasing. The UAB reports track the top email-based threats from each day, and include information about the spoofed brand or lure, the method of delivering the malware, and links to Virustotal.com, which show the percentage of antivirus products that detected the malware as hostile.

As the chart I compiled above indicates, attackers are switching the lure or spoofed brand quite often, but popular choices include Amazon.com, the Better Business Bureau, DHL, Facebook, LinkedIn, PayPal, Twitter and Verizon Wireless.

Also noticeable is the lack of antivirus detection on most of these password stealing and remote control Trojans. The average detection rate for these samples was 24.47 percent, while the median detection rate was just 19 percent. This means that if you click a malicious link or open an attachment in one of these emails, there is less than a one-in-five chance your antivirus software will detect it as bad.

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8
Mar 12

Banking on Badb in the Underweb

Underground Web sites can be a useful barometer for the daily volume of criminal trade in goods like stolen credit card numbers and hijacked PayPal or eBay accounts. And if the current low prices at one of Underweb’s newer and more brazen card shops are indicative of a trend, the market for these commodities has never been more cutthroat.

Visa, Amex cards for sale at Badb.su

Badb.su is distinguishable from dozens of underground carding shops chiefly by its slick interface and tiny domain name, which borrows on the pseudonym and notoriety of the Underweb’s most recognizable carder. It’s difficult to say whether “Badb” himself would have endorsed the use of his brand for this particular venture, but it seems unlikely: The man alleged by U.S. authorities to be Badb — 29-year-old Vladislav Anatolievich Horohorin — has been in a French prison since his arrest there in 2010. Authorities believe Horohorin is one of the founding members of CarderPlanet, a site that helped move millions of stolen accounts. He remains jailed in France, fighting extradition to the United States (more about his case in an upcoming story).

Badb.su’s price list shows that purloined American Express and Discover accounts issued to Americans cost between $2.50 and $3 apiece, with MasterCard and Visa accounts commanding slightly lower prices ($2-$3). Cards of any type issued by banks in the United Kingdom or European Union fetch between $4-$7 each, while accounts from Canadian financial institutions cost between $3 to $5 a pop.

The site also sells verified PayPal and eBay accounts. Verified PayPal accounts with credit cards and bank accounts attached to them go for between 2-3$, while the same combination + access to the account holder’s email inbox increases the price by $2. PayPal accounts that are associated with bank and/or credit accounts and include a balance are sold for between 2 and 10 percent of the available balance. That rate is considerably lower than the last PayPal underground shop I reviewed, which charged 8 to 12 percent of the total compromised account balance.

Verified PayPal accounts with positive balances sell for between 2-10% of the available balance.

Ebay auction accounts are priced according to the number of positive “feedback” points that each victim account possesses (feedback is the core of eBay’s reputation system, whereby members evaluate their buying and selling experiences with other members). eBay accounts with fewer than 75 feedback history sell for $2 each, while those with higher levels of feedback command prices of $5 and higher apiece, because these accounts are more likely to be perceived as trustworthy by other eBay members.

But don’t count on paying for any of these goods with a credit card; Badb.su accepts payment only through virtual currencies such as Liberty Reserve and WebMoney.

Badb.su, like many other card shops, offers an a-la-carte, card-checking service that allows buyers to gauge the validity of stolen cards before or after purchasing them. Typically, these services will test stolen card numbers using a hijacked merchant account that initiates tiny charges or so-called pre-authorization checks against the card; if the charge or pre-auth clears, the card-checking service issues a “valid” response for the checked card number.

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13
Dec 11

Bugs Money

Talk about geek chic. Facebook has started paying researchers who find and report security bugs by issuing them custom branded “White Hat” debit cards that can be reloaded with funds each time the researchers discover new flaws.

Facebook's Bug Bounty debit card for security researchers who report security flaws in its site and applications.

I first read about this card on the Polish IT security portal Niebezpiecznik.pl, which recently published an image of a bug bounty card given to Szymon Gruszecki, a Polish security researcher and penetration tester. A sucker for most things credit/debit card related, I wanted to hear more from researchers who’d received the cards.

Like many participants in Facebook’s program, Gruszecki also is hunting bugs for other companies that offer researchers money in exchange for privately reporting vulnerabilities, including Google, Mozilla, CCBill and Piwik. That’s not to say he only finds bugs for money.

“I regularly report Web app vulnerabilities to various companies [that don't offer bounties], including Microsoft, Apple, etc.,” Gruszecki wrote in an email exchange.

The bug bounty programs are a clever way for Internet-based companies to simultaneously generate goodwill within the security community and to convince researchers to report bugs privately. Researchers are rewarded if their bugs can be confirmed, and if they give the affected companies time to fix the flaws before going public with the information.

As an added bonus, some researchers — like Gruszecki — choose not to disclose the bugs at all.

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5
Oct 11

How Much is That Phished PayPal Account?

Compromised PayPal accounts are a valuable commodity in the criminal underground, and crooks frequently trade them in shadowy online forums. But it wasn’t until recently that I finally encountered a proper Web site dedicated to selling hacked PayPal accounts.

Compromised PayPal accounts for sale at iProfit.su

Many of the PayPal accounts for sale at iProfit.su have a zero balance, but according to the proprietor of this shop these are all “verified.” PayPal “verifies” an account when a customer agrees to attach a bank account to it; PayPal then sends a micropayment the bank account, and asks the user the value of that mini deposit. A bonus feature: all the hacked PayPal profiles currently for sale at iProfit.su are advertised as having a credit card attached to them, which is another way PayPal accounts can be verified.

The creator of iProfit.su also advertises private, bulk sales of unverified PayPal accounts; currently he is selling these at $50 per 100 accounts – a bargain at only 50 cents apiece.

Accounts are sold with or without email access (indicated by the “email” heading in the screenshot above): Accounts that come with email access include the username and password of the victim’s email account that they used to register at PayPal, the site’s proprietor told me via instant message. The creator of iProfit.su told me the accounts for sale were stolen via phishing attacks, but the fact that accounts are being sold along with email access suggests that at least some of the accounts are being hijacked by password-stealing computer Trojans on account holders’ PCs.

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6
Sep 11

Rent-a-Bot Networks Tied to TDSS Botnet

Criminals who operate large groupings of hacked PCs tend to be a secretive lot, and jealously guard their assets against hijacking by other crooks. But one of the world’s largest and most sophisticated botnets is openly renting its infected PCs to any and all comers, and has even created a Firefox add-on to assist customers.

The TDSS botnet is the most sophisticated threat today, according to experts at Russian security firm Kaspersky Lab. First launched in 2008, TDSS is now in its fourth major version (also known as TDL-4). The malware uses a “rootkit” to install itself deep within infected PCs, ensuring that it loads before the Microsoft Windows operating system starts. TDSS also removes approximately 20 malicious programs from host PCs, preventing systems from communicating with other bot families.

In an exhaustive analysis of TDSS published in June, Kaspersky researchers Sergey Golovanov and Igor Soumenkov wrote that among the many components installed by TDSS is a file called “socks.dll,” which allows infected PCs to be used by others to surf the Web anonymously.

Researchers say this Firefox add-on helps customers use Internet connections of TDSS-infected PCs.

“Having control over such a large number of computers with this function, the cybercriminals have started offering anonymous Internet access as a service, at a cost of roughly $100 per month,” the researchers wrote. “For the sake of convenience, the cybercriminals have also developed a Firefox add-on that makes it easy to toggle between proxy servers within the browser.”

The storefront for this massive botnet is awmproxy.net, which advertises “the fastest anonymous proxies.” According to Golovanov, when socks.dll is installed on a TDSS-infected computer, it notifies awmproxy.net that a new proxy is available for rent. Soon after that notification is completed, the infected PC starts to accept approximately 10 proxy requests each minute, he said.

“For us it was enough to see that this additional proxy module for tdl4 was installed directly on encrypted partition and runs thru rootkit functionality,” Golovanov told KrebsOnSecurity. “So we believe that awmproxy has direct connection to tdl4 developer but how they are working together we don’t know.” The curators of AWMproxy did not respond to requests for comment.

AWMproxy.net, the storefront for renting access to TDSS-infected PCs

The service’s proxies are priced according to exclusivity and length of use. Regular browser proxies range from $3 per day to $25 monthly. Proxies that can be used to anonymize all of the Internet traffic on a customer’s PC cost between $65 and $500 a month. For $160 a week, customers can rent exclusive access to 100 TDSS-infected systems at once. Interestingly, AWMproxy says it accepts payment via PayPal, MasterCard, and Visa.

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