1. Symantec/
  2. Security Response/
  3. Backdoor.Clt


Risk Level 1: Very Low

February 12, 2003
February 13, 2007 12:06:02 PM
Also Known As:
Trojan Horse
Systems Affected:

Backdoor.Clt is a Backdoor Trojan Horse that gives a hacker complete access to your computer. By default, the Trojan opens port 6667 and connects to a specific IRC server to receive commands.

The Trojan is packed with FSG.

NOTE: Virus definitions dated prior to August 18, 2003 may detect this threat as W32.Cult.

Antivirus Protection Dates

  • Initial Rapid Release version February 13, 2003
  • Latest Rapid Release version September 28, 2010 revision 054
  • Initial Daily Certified version February 13, 2003
  • Latest Daily Certified version September 28, 2010 revision 036
  • Initial Weekly Certified release date February 19, 2003
Click here for a more detailed description of Rapid Release and Daily Certified virus definitions.
Writeup By: Douglas Knowles

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2016 Internet Security Threat Report, Volume 21
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