1. /
  2. Security Response/
  3. Trojan.Gapz


Risk Level 1: Very Low

January 2, 2013
January 3, 2013 5:32:20 PM
Systems Affected:
Windows 2000, Windows 7, Windows 95, Windows 98, Windows Me, Windows NT, Windows Vista, Windows XP
CVE References:
2639417, CVE-2010-4398, CVE-2011-2005, CVE-2011-3402, MS11-087
Trojan.Gapz is a Trojan horse that opens a back door on the compromised computer. The Trojan may also download and install additional malware.

Antivirus Protection Dates

  • Initial Rapid Release version January 2, 2013 revision 008
  • Latest Rapid Release version June 24, 2014 revision 006
  • Initial Daily Certified version January 2, 2013 revision 016
  • Latest Daily Certified version June 17, 2013 revision 002
  • Initial Weekly Certified release date January 2, 2013
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: Medium
  • Payload: Infects master and volume boot records.


  • 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: Branko Spasojevic

Search Threats

Search by name
Example: W32.Beagle.AG@mm
STAR Antimalware Protection Technologies
Internet Security Threat Report