W32.Kelvir.A

Risk Level 2: Low

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Discovered:: March 6, 2005
Updated:: February 13, 2007 12:34:43 PM
Also Known As:: Win32.Bropia.T [Computer Assoc, IM-Worm.Win32.Kelvir.a [Kasper, W32/Kelvir.worm.b [McAfee], W32/Kelvir-B [Sophos], WORM_KELVIR.A [Trend Micro]
Type:: Worm
Systems Affected:: Windows 2000, Windows 95, Windows 98, Windows Me, Windows NT, Windows Server 2003, Windows XP

W32.Kelvir.A is a worm that spreads through Windows and MSN Messenger. The worm attempts to download and execute a variant of W32.Spybot.Worm.

The worm arrives in a Windows Messenger window with a link to the file cute.pif.

Note: Virus definitions version 70306r (extended version 3/6/2005 rev. 18) or greater are required to detect this threat.

Antivirus Protection Dates

Initial Rapid Release version March 6, 2005
Latest Rapid Release version September 28, 2010 revision 054
Initial Daily Certified version March 6, 2005
Latest Daily Certified version September 28, 2010 revision 036
Initial Weekly Certified release date March 6, 2005

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

Threat Assessment

Wild

Wild Level: Medium
Number of Infections: 50 - 999
Number of Sites: 3 - 9
Geographical Distribution: Low
Threat Containment: Easy
Removal: Moderate

Damage

Damage Level: Medium

Distribution

Distribution Level: Medium

Writeup By: Maryl Magee

Technical Details

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Internet Security Threat Report, Volume 16