Discovered: July 24, 2008
Updated: July 24, 2008 7:27:51 PM
Also Known As: Win32/Kollah.NU [Computer Associates], W32/Zbot [F-Secure], TROJ_ZBOT.AJD [Trend], TROJ_ZBOT.QT [Trend], Generic PWS.y!F1684D85 [McAfee], TROJ_ZBOT.AJR [Trend], Troj/Zbot-AX [Sophos], Troj/Zbot-BD [Sophos], Troj/BckDoor-B [Sophos], Troj/Zbot-CK [Sophos], Troj/Agent-KZY [Sophos]
Type: Trojan
Infection Length: 68,608 bytes
Systems Affected: Windows 98, Windows 95, Windows XP, Windows Me, Windows Vista, Windows NT, Windows Server 2003, Windows 2000
Trojan.Wsnpoem is a Trojan horse that opens a back door and downloads potentially malicious files on to the compromised computer.
Protection
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Initial Rapid Release version July 23, 2008 revision 038
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Latest Rapid Release version November 24, 2009 revision 033
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Initial Daily Certified version July 23, 2008 revision 039
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Latest Daily Certified version November 24, 2009 revision 035
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Initial Weekly Certified release date July 30, 2008
Click for a more detailed description of Rapid Release and Daily Certified virus definitions.
Threat Assessment
Wild
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Wild Level: Low
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Number of Infections: 0 - 49
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Number of Sites: 0 - 2
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Geographical Distribution: Low
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Threat Containment: Easy
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Removal: Easy
Damage
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Damage Level: Medium
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Payload: Opens a back door on the compromised computer.
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Degrades Performance: Downloading files may degrade performance.
Distribution
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Distribution Level: Medium
Writeup By: Hyun Choi and Sean Kiernan
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