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  3. OSX.Loosemaque


Risk Level 1: Very Low

November 3, 2009
November 3, 2009 10:58:12 AM
Also Known As:
OSX_LOSEGAM.A [Trend], Trojan:OSX/Loosemaque.A [F-Secure]
Infection Length:
3,691,880 bytes
Systems Affected:
Mac OS X
OSX.Loosemaque is a Trojan that appears to be a video game, but deletes files from the home folder when a user plays it.

Antivirus Protection Dates

  • Initial Rapid Release version November 3, 2009 revision 002
  • Latest Rapid Release version February 19, 2013 revision 016
  • Initial Daily Certified version November 3, 2009 revision 007
  • Latest Daily Certified version November 3, 2009 revision 007
  • Initial Weekly Certified release date November 4, 2009
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: Deletes files from the home folder.
  • Modifies Files: Deletes files from the home folder.


  • 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: Takashi Katsuki

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