Backdoor.Cyn

Risk Level 1: Very Low

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Discovered:: August 30, 2002
Updated:: February 13, 2007 11:50:02 AM
Also Known As:: Backdoor/Win32.Cyn.2_1 [RAV], Backdoor.Cyn.21.a [AVP], BackDoor-PB [McAfee]
Type:: Trojan Horse
Systems Affected:: Windows 2000, Windows 95, Windows 98, Windows Me, Windows NT, Windows XP

Backdoor.Cyn is a Backdoor Trojan that gives an attacker unauthorized access to an infected computer. By default it opens ports 15432 and 51234 on the compromised computer. Backdoor.Cyn is a Delphi application and is packed with UPX v1.05-1.22.

The Backdoor Trojan listens for connections on TCP ports 15432 and 51234.

Antivirus Protection Dates

Initial Rapid Release version August 30, 2002
Latest Rapid Release version August 20, 2008 revision 017
Initial Daily Certified version August 30, 2002
Latest Daily Certified version August 20, 2008 revision 016
Initial Weekly Certified release date September 4, 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: Easy

Damage

Damage Level: Low

Distribution

Distribution Level: Low

Writeup By: Serghei Sevcenco

Technical Details

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Internet Security Threat Report, Volume 16