W32.Gammima

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

Protection

• Initial Rapid Release version March 22, 2007
• Latest Rapid Release version November 19, 2009 revision 052
• Initial Daily Certified version March 22, 2007
• Latest Daily Certified version November 20, 2009 revision 005
• Initial Weekly Certified release date March 28, 2007

Click here for a more detailed description of Rapid Release and Daily Certified virus definitions.

Threat Assessment

Wild

• Wild Level: Low
• Number of Infections: 0 - 49
• Number of Sites: 0 - 2
• Geographical Distribution: Low
• Threat Containment: Easy
• Removal: Easy

Damage

• Damage Level: Low
• Payload: Spreads through removable media.
• Releases Confidential Info: Steals information related to the MapleStory online game.

Distribution

• Distribution Level: Low