W32.Fanbot.A@mm

Risk Level 2: Low

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Discovered:: October 17, 2005
Updated:: February 13, 2007 12:45:35 PM
Also Known As:: W32/Fanbot-H [Sophos], WORM_FANBOT.A [Trend Micro]
Type:: Worm
Systems Affected:: Windows 2000, Windows 98, Windows Me, Windows NT, Windows Server 2003, Windows XP

W32.Fanbot.A@mm is a mass-mailing worm that lowers security settings on the compromised computer. It also spreads by exploiting the Microsoft Windows Plug and Play Buffer Overflow Vulnerability (described in Microsoft Security Bulletin MS05-039) and through peer-to-peer networks.

Antivirus Protection Dates

Initial Rapid Release version October 17, 2005
Latest Rapid Release version September 28, 2010 revision 054
Initial Daily Certified version October 17, 2005
Latest Daily Certified version September 28, 2010 revision 036
Initial Weekly Certified release date October 17, 2005

Click for a more detailed description of Rapid Release and Daily Certified virus definitions.

Threat Assessment

Wild

Wild Level: Low
Number of Infections: 0 - 49
Number of Sites: 0 - 2
Geographical Distribution: Low
Threat Containment: Easy
Removal: Moderate

Damage

Damage Level: Medium

Distribution

Distribution Level: High

Writeup By: Masaki Suenaga

Technical Details

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Internet Security Threat Report, Volume 16