A worm that targets gamers is making the rounds, tapping into popular titles and peer-to-peer file sharing, a security company has warned.

The worm, Hagbard.A, tries to disguise itself on peer-to-peer networks as pirated downloads of the popular games titles “Grand Theft Auto: San Andreas,” “Need for Speed Underground 2″ and 400 other programs, Sophos said in an advisory released on Friday.

The downloaded program will copy itself to the file-sharing folder on the compromised PC and attempt to spread using the Windows Messenger. An instant message sent to others on the service contains a link to the worm and reads: “please download this…its only small brb.”

Source: ZDNet