Threat of the month: DRM Rootkits

How does it work?


When the user loads the audio CD into a computer and agrees to the software license, the rootkit installs itself deeply into the operating system, intercepting low-level system calls in order to block certain applications from running, as well as to hide the DRM software's processes from the end-user.

Should I be worried?

Other viruses/trojans can take advantage of the way the rootkit works in order to hide their own processes. The uninstall program provided by Sony is an ActiveX control which leaves a hole in the system that can be exploited by malicious websites through Internet Explorer.


How can I prevent it?

Many rootkit detection packages, such as F-Secure's Blacklight, have been updated to detect the presence of the DRM rootkit. Microsoft's malware removal tool has been updated to be able to remove the rootkit without the need for the vulnerable ActiveX control provided by Sony.

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