Discovered: September 10, 2009
Updated: September 10, 2009 9:59:05 AM
Type: Worm
Infection Length: 80,384 bytes
Systems Affected: Windows 98, Windows 95, Windows XP, Windows Me, Windows Vista, Windows NT, Windows Server 2003, Windows 2000
W32.Fnumbot is a worm that spreads through removable drives and opens a back door on the compromised computer.
Protection
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Initial Rapid Release version September 10, 2009 revision 003
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Latest Rapid Release version November 19, 2009 revision 048
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Initial Daily Certified version September 10, 2009 revision 024
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Latest Daily Certified version November 20, 2009 revision 005
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Initial Weekly Certified release date September 16, 2009
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.
Distribution
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Distribution Level: Medium
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Shared Drives: Spreads through removable drives.
Writeup By: Takayoshi Nakayama
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