Trojan.Kirvo

Risk Level 1: Very Low

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Discovered:: July 18, 2005
Updated:: February 13, 2007 12:42:25 PM
Type:: Trojan Horse
Systems Affected:: Windows 2000, Windows 95, Windows 98, Windows Me, Windows NT, Windows Server 2003, Windows XP

Trojan.Kirvo is a Trojan that sends a link to all MSN Messenger contacts.

Note: Virus definitions released prior to July 19, 2005 may detect this as W32.Kelvir.FN.

Antivirus Protection Dates

Initial Rapid Release version July 19, 2005
Latest Rapid Release version March 3, 2008 revision 035
Initial Daily Certified version July 19, 2005
Latest Daily Certified version March 3, 2008 revision 037
Initial Weekly Certified release date July 20, 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: Easy

Damage

Damage Level: Low

Distribution

Distribution Level: Low

Writeup By: John Canavan

Technical Details

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Internet Security Threat Report, Volume 16