1. Symantec/
  2. Security Response/
  3. W32.Trilisa@mm


Risk Level 2: Low

April 16, 2002
February 13, 2007 11:58:06 AM
Also Known As:
W32/Trilisa@MM, WORM_ORKIZ.A, W32.Trilisa-A, Win32.Trilisa
Systems Affected:

W32.Trilisa@mm is a worm that sends itself to all addresses in the Microsoft Outlook address book. It renames all files that are in the \Windows folder and that have the .exe or .scr file extension; the worm then copies itself as the original file name. It also deletes files that have specific file extensions, as well as the files Regedit and Regedb32.

Antivirus Protection Dates

  • Initial Rapid Release version April 17, 2002
  • Latest Rapid Release version August 8, 2016 revision 023
  • Initial Daily Certified version April 17, 2002
  • Latest Daily Certified version August 9, 2016 revision 001
  • Initial Weekly Certified release date April 17, 2002
Click here for a more detailed description of Rapid Release and Daily Certified virus definitions.
Writeup By: Douglas Knowles

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STAR Antimalware Protection Technologies
2016 Internet Security Threat Report, Volume 21
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