Sinowal trojan compromises 500,000 bank accounts
By Tyler Metzger
Over roughly three years, the details of more than 500,000 online financial accounts from around the world were stolen by malicious software deemed the "most pervasive and advanced pieces of crimeware ever created by fraudsters."
According to the RSA FraudAction Research Lab, a securities research group, a program called the Sinowal Trojan has stolen more than 300,000 login credentials and 250,000 credit and debit card numbers since February 2006. In the past six months alone, more than 100,000 online bank accounts were compromised. E-mail addresses and FTP accounts from several websites were also discovered to have been accessed or stolen.
The chart below shows the amount of compromised bank accounts since February 2006.
Source: FraudAction RSA Research Lab
The source of the Sinowal Trojan, also known as Torpig and Mebroot, is unknown, though many analysts speculate it is connected to the Russian Business Network, an active cybercrime ring. RSA's research confirms that the software had ties to the organization in the past, but that current hosting of Sinowal is unknown.
Researchers say the program has been so successful due to its incredible stealth. Similar to all Trojans, Sinowal injects seemingly legitimate websites or information fields into a user's Internet browser when a specific URL is accessed. For example, users who are accessing their financial accounts online will be prompted to enter their Social Security number, even if the information isn't required. Once submitted, the stolen information is stored and organized on server space owned by the software's creators.The software from then on saves and submits sensitive information from every website the user visits.
Hundreds of financial institution customers have been affected by Sinowal. RSA found that banks in North America, Europe, Asia Pacific and Latin America were all infected by the software. However, no financial accounts from Russia were compromised.
The software continues to plague Internet users, but the RSA is sharing its findings with several law enforcement agencies. They also have returned the stolen information to some of the affected financial institutions.
See related: The secret history of CarderPlanet.com and Dmitry Ivanovich Golubov, Notes from the underground: The next generation of carders, Credit card phishing scam: How it works, how to prevent it
Published: November 4, 2008
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