1. Symantec/
  2. Security Response/
  3. W32.Gammima


Risk Level 1: Very Low

March 21, 2007
March 22, 2007 8:31:44 AM
Infection Length:
71,680 bytes
Systems Affected:
W32.Gammima is a worm that spreads through removable media and steals information related to the MapleStory online game.

Note: Symantec strongly recommends that customers take specific steps to control the execution of applications referenced in autorun.inf files that may be located on removable and network drives. Threats such as this one frequently attempt to spread to other computers using these avenues. Configuration changes made to a computer can limit the possibility of new threats compromising it. For more information, see the following document:

How to prevent a virus from spreading using the "AutoRun" feature

Antivirus Protection Dates

  • Initial Rapid Release version March 22, 2007
  • Latest Rapid Release version March 8, 2018 revision 025
  • Initial Daily Certified version March 22, 2007
  • Latest Daily Certified version March 9, 2018 revision 002
  • Initial Weekly Certified release date March 28, 2007
Click here for a more detailed description of Rapid Release and Daily Certified virus definitions.
Writeup By: Masaki Suenaga

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