Backdoor.Cow

Risk Level 1: Very Low

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Discovered:: December 27, 2002
Updated:: February 13, 2007 11:46:52 AM
Also Known As:: Backdoor.Cow [KAV]
Type:: Trojan Horse
Systems Affected:: Windows 2000, Windows 95, Windows 98, Windows Me, Windows NT, Windows XP

Backdoor.Cow is backdoor Trojan that allows a hacker to control the computer. By default it opens port 2001. The existence of the file Syswindow.exe is a sign of possible infection. It is written in the Delphi programming language and is packed with UPX.

Antivirus Protection Dates

Initial Rapid Release version December 27, 2002
Latest Rapid Release version March 3, 2008 revision 035
Initial Daily Certified version December 27, 2002
Latest Daily Certified version March 3, 2008 revision 037
Initial Weekly Certified release date December 30, 2002

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: Low

Writeup By: Kaoru Hayashi

Technical Details

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Internet Security Threat Report, Volume 16