Banking Malware: Sophistication Rises In Longtime Botnet Families

1. Gameover Zeus

Gameover, which was first detected in 2011, is responsible for 38 percent of the banking Trojans detected in the space. It spreads through email attachments and drive-by downloads. Gameover is tightly controlled and available to a small segment of the criminal economy. It also uses peer-to-peer communication techniques to mask the location of its command and control servers and drop-off points. Dell SecureWorks researchers call further development of the botnet "extremely focused and driven by a small group of threat actors." Interestingly, those behind Gameover Zeus have been observed using distributed denial-of-service attacks as a diversion tactic to prevent victims from being able to log into their accounts.

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