1. Symantec/
  2. Security Response/
  3. Backdoor.Helios.B


Risk Level 1: Very Low

November 12, 2003
February 13, 2007 12:13:47 PM
Trojan Horse
Systems Affected:

Backdoor.Helios.B is a backdoor Trojan horse that is a variant of Backdoor.Helios. It is written in Microsoft Visual Basic, version 6.

Backdoor.Helios.B gives its creator unauthorized access to an infected computer using Internet Relay Chat (IRC).

The existence of the Ssvchost.exe file is an indication of a possible infection.

The Trojan attempts to disable some antivirus and firewall programs by terminating the active processes.

Antivirus Protection Dates

  • Initial Rapid Release version November 13, 2003
  • Latest Rapid Release version March 23, 2017 revision 037
  • Initial Daily Certified version November 13, 2003
  • Latest Daily Certified version March 23, 2017 revision 041
  • Initial Weekly Certified release date November 17, 2003
Click here for a more detailed description of Rapid Release and Daily Certified virus definitions.
Writeup By: Kevin Ha

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