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Home » Hacking News » Windows DRM loophole exploited by trojans

Windows DRM loophole exploited by trojans

by Nikola Strahija on January 14th, 2005 Virus makers have exploit digital rights management features in Windows Media Player to spread Trojans and other malware across computers worldwide.

License-protected movie (.wmv) files infected with the WmvDownloader-A or WmvDownloader-B Trojans have entered circulation on P2P networks, reports of which came in only yesterday.

Normally when a user tries to play a protected Windows media file, and a valid license is not stored on a computer, the application will try to look for it on the internet, so that the user can buy access to copyright-protected content. This new technology is incorporated in the latest Windows Media Player 10 update as well as XP SP2.

If the user runs a video file that is infected by one of the DRM Trojans, they pretend to download the corresponding license from the net, but in reality users are redirected to sites that take advantage of Windows vulnerabilities to download spyware, adware, premium-rate diallers and other viruses onto victim's machines.

The Trojans have been detected in video files with extremely variable names circulating across P2P networks such as KaZaA or eMule.

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