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  3. Trojan.Moo


Risk Level 1: Very Low

September 28, 2004
February 13, 2007 12:27:55 PM
Also Known As:
TROJ_MOO.A [Trend Micro]
Trojan Horse
Systems Affected:
Windows 2000, Windows 95, Windows 98, Windows Me, Windows NT, Windows XP

Trojan.Moo is a Trojan horse program that exploits the Microsoft GDI+ Library JPEG Segment Length Integer Underflow vulnerability (described in the Microsoft Security Bulletin MS04-028).

  • This signature will detect files created by Hacktool.JPEGDownload.
  • Virus definitions released September 27, 2004 and later detect this threat as Bloodhound.Exploit.13.

Antivirus Protection Dates

  • Initial Rapid Release version September 28, 2004
  • Latest Rapid Release version September 23, 2015 revision 003
  • Initial Daily Certified version September 28, 2004 revision 002
  • Latest Daily Certified version September 23, 2015 revision 016
  • Initial Weekly Certified release date September 28, 2004
Click here for a more detailed description of Rapid Release and Daily Certified virus definitions.
Writeup By: Robert X Wang

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