W32.Kelvir.AC

Risk Level 2: Low

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Discovered: April 19, 2005

Updated: February 13, 2007 12:37:22 PM

Also Known As: Win32.Kelvir.L [Computer Assoc, IM-Worm.Win32.Kelvir.u [Kasper, W32/Kelvir.worm.ai [McAfee], Troj/Kelvir-M [Sophos], WORM_KELVIR.W [Trend Micro]

Type: Worm

Systems Affected: Windows 2000, Windows 95, Windows 98, Windows Me, Windows NT, Windows Server 2003, Windows XP

W32.Kelvir.AC is a worm that spreads through MSN Messenger and drops a variant of W32.Spybot.Worm.

Protection

Initial Rapid Release version April 19, 2005
Latest Rapid Release version July 26, 2008 revision 017
Initial Daily Certified version April 19, 2005
Latest Daily Certified version January 20, 2009 revision 048
Initial Weekly Certified release date April 20, 2005

Click here 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: More than 10
Geographical Distribution: Low
Threat Containment: Easy
Removal: Moderate

Damage

Damage Level: Medium

Distribution

Distribution Level: Medium

Writeup By: Paul Mangan

Technical Details

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