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CMOSDead DOS Virus
March 21, 2011
WARNING - THIS VIRUS'S PAYLOAD IS BOTH LOUD AND VISUALLY FRIGHTENING. Proceed with caution.
HUGE thanks for TomKTW for the sample. You can check out his channel (and the video where I learned about this virus) by visiting his channel.
The CMOSDead virus is one of my new favorites, and activates destructively whenever it feels like it. After infecting .COM files, it will randomly run the payload routine where it displays a truly ear raping noise and scary visual payload, while at the same time corrupting the CMOS memory (which will cause the system to lose the current time and hard drive controller settings, which must be re-entered manually by the user).
However, this virus contains another payload, where if the user presses CTRL+ALT+DEL (to restart the computer) during the ear raping and heart attack-inducing payload, then the virus will format the hard drive. Truly, evil programming at its finest.