W32.Multex.B

Risk Level 1: Very Low

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Discovered:: September 10, 2004
Updated:: February 13, 2007 12:27:25 PM
Also Known As:: W32.Sykel, Worm.P2P.Multex.b [Kaspersky], Win32/HLLW.Secef.A [GeCAD]
Type:: Worm
Systems Affected:: Windows 2000, Windows NT, Windows XP

W32.Multex.B is a worm that attempts to exploit the Microsoft Windows LSASS Buffer Overrun Vulnerability (described in Microsoft Security Bulletin MS04-011). It also attempts to propagate through the Kazaa file-sharing network.

Note: Virus definitions dated September 13th, 2004 or earlier may detect this threat as W32.Sykel.

Antivirus Protection Dates

Initial Rapid Release version September 11, 2004
Latest Rapid Release version September 28, 2010 revision 054
Initial Daily Certified version September 11, 2004
Latest Daily Certified version September 28, 2010 revision 036
Initial Weekly Certified release date September 15, 2004

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: Easy

Damage

Damage Level: Low

Distribution

Distribution Level: Low

Writeup By: Kaoru Hayashi

Technical Details

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Internet Security Threat Report, Volume 16