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Spam Trojan Installs Own Anti-Virus Scanner
By Ryan Naraine
October 20, 2006


Veteran malware researcher Joe Stewart was fairly sure he'd seen it all until he started poking at the SpamThru Trojan—a piece of malware designed to send spam from an infected computer.

The Trojan, which uses peer-to-peer technology to send commands to hijacked computers, has been fitted with its own anti-virus scanner—a level of complexity and sophistication that rivals some commercial software.