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  3. Trojan.FakeAV.B


Risk Level 1: Very Low

October 24, 2008
September 4, 2012 12:28:03 PM
Also Known As:
Troj/Renos-BX [Sophos], Troj/Renos-CF [Sophos]
Infection Length:
Systems Affected:
Windows 2000, Windows 95, Windows 98, Windows Me, Windows NT, Windows Server 2003, Windows Vista, Windows XP
Trojan.FakeAV.B is a Trojan horse that registers itself as a Browser Helper Object on the compromised computer.

Note: Definitions dated before October 5th, 2009 may detect this threat as Trojan.Fakeavalert.B.

For more information, please see the following resources:

Antivirus Protection Dates

  • Initial Rapid Release version October 24, 2008 revision 022
  • Latest Rapid Release version February 19, 2013 revision 016
  • Initial Daily Certified version October 24, 2008 revision 024
  • Latest Daily Certified version March 4, 2011 revision 036
  • Initial Weekly Certified release date October 29, 2008
Click here for a more detailed description of Rapid Release and Daily Certified virus definitions.

Threat Assessment


  • Wild Level: Low
  • Number of Infections: 0 - 49
  • Number of Sites: 0 - 2
  • Geographical Distribution: Low
  • Threat Containment: Easy
  • Removal: Easy


  • Damage Level: Low
  • Payload: Registers itself as a Browser Helper Object.
  • Degrades Performance: Displays misleading security-related alert pop ups which may degrade performance.


  • Distribution Level: Low
Note: On May 14, 2015, modifications will be made to the threat write-ups to streamline the content. The Threat Assessment section will no longer be published as this section is no longer relevant to today's threat landscape. The Risk Level will continue to be the main threat risk assessment indicator.
Writeup By: Stephen Doherty

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