1. Symantec/
  2. Security Response/
  3. Backdoor.WinShell.50


Risk Level 2: Low

August 5, 2003
February 13, 2007 12:04:44 PM
Also Known As:
Backdoor.Winshell.50 [KAV], BackDoor-TC [McAfee]
Trojan Horse
Systems Affected:

Backdoor.WinShell.50 is a server program that allows unauthorized access to an infected computer. The Backdoor will listen on port 8719.

This piece of malware, along with Trojan.Stealther.B, has recently been found on systems that the Microsoft DCOM RPC vulnerability has exploited.

Symantec Security Response has developed a removal tool to clean infections of Backdoor.Winshell.50 and Trojan.Stealther.B.

NOTE: Virus definitions dated August 6, 2003 may detect this as Backdoor.Winshell.

Antivirus Protection Dates

  • Initial Rapid Release version August 7, 2003
  • Latest Rapid Release version August 8, 2016 revision 023
  • Initial Daily Certified version August 7, 2003 revision 003
  • Latest Daily Certified version August 9, 2016 revision 001
  • Initial Weekly Certified release date August 13, 2003
Click here for a more detailed description of Rapid Release and Daily Certified virus definitions.
Writeup By: Douglas Knowles

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STAR Antimalware Protection Technologies
2016 Internet Security Threat Report, Volume 21
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