WORM_ALCAN.A

I got this nasty virus on my Windows XP probably due to downloading malicious files through p2p networking. This virus disabled command prompt and task manager. Even if you know the name of the malicious files, as they are running in resident memory, without invoking task manager, the background process can not be stopped which renders not being able to delete the files. One way to remove the virus is to boot in safe mode and then delete all the associated files. Another method is to use a boot a Linux live CD, then mount the Windows hard disk and rm the files in Linux environment.