Discovered: October 22, 2004
Updated: February 13, 2007 12:29:04 PM
Also Known As: W32/Zelly (McAfee), Win32.Jolla.a (KAV)
Type: Virus
Systems Affected: Windows 2000, Windows 95, Windows 98, Windows Me, Windows NT, Windows Server 2003, Windows XP
W32.Zelly is a complex multi-layer polymorphic and Entry-Point Obscuring file infector. It is a zoo virus and unlikely to spread in the wild.
Protection
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Initial Rapid Release version October 26, 2004
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Latest Rapid Release version October 26, 2004
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Initial Daily Certified version October 26, 2004
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Latest Daily Certified version January 15, 2008 revision 017
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Initial Weekly Certified release date October 27, 2004
Click for a more detailed description of Rapid Release and Daily Certified virus definitions.
Writeup By: Frederic Perriot
