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  3. Trojan.Watsoon.A


Risk Level 1: Very Low

October 19, 2004
February 13, 2007 12:28:51 PM
Also Known As:
Backdoor.Win32.VB.un [Kaspersk, BackDoor-BDN [McAfee]
Trojan Horse
Systems Affected:
Windows 2000, Windows 95, Windows 98, Windows Me, Windows NT, Windows Server 2003, Windows XP

Trojan.Watsoon.A is a polymorphic Trojan horse that opens a backdoor on a compromised computer. By default is uses TCP port 19381

NOTE:. Definitions prior to 27th October 2004 may detect this threat as W32.Watsoon.A

Antivirus Protection Dates

  • Initial Rapid Release version October 20, 2004
  • Latest Rapid Release version June 24, 2014 revision 006
  • Initial Daily Certified version October 20, 2004
  • Latest Daily Certified version September 5, 2012 revision 002
  • Initial Weekly Certified release date October 20, 2004
Click here for a more detailed description of Rapid Release and Daily Certified virus definitions.
Writeup By: John Canavan

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