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  3. OSX.Iservice


Risk Level 1: Very Low

January 22, 2009
January 27, 2009 9:55:17 PM
Also Known As:
OSX/iWorkServ.A [F-Secure], OSX/IWService [McAfee], OSX/iWorkS-A [Sophos], OSX_KROWI.A [Trend], OSX/iWorkS-Fam [Sophos], OSX/Krowi.A [Computer Associates]
Infection Length:
413,568 bytes
OSX.Iservice is a Trojan horse that runs on Mac OS X and opens a back door on the compromised computer.

Note: Virus definitions dated January 23, 2009 or earlier may detect this threat as OSX.Iwork.

For more information, please read the following:
OSX.Iservice—It’s not going to iWork for you.

Antivirus Protection Dates

  • Initial Rapid Release version January 22, 2009 revision 025
  • Latest Rapid Release version February 24, 2009 revision 040
  • Initial Daily Certified version January 22, 2009 revision 040
  • Latest Daily Certified version February 24, 2009 revision 048
  • Initial Weekly Certified release date January 28, 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: Medium
  • Payload: Opens a back door on the compromised computer.


  • Distribution Level: Low
Writeup By: Elia Florio

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