The MSBlast Worm shut down networks all over the world in 2004, causing billions of dollars in damage. It causes the computer to behave oddly and spams requests for IP addresses through the network, attempting to find a vulnerable computer. Once it does, it opens an FTP server to transfer itself. After a period of time, the searching will overload the RPC (Remote Procedure Call) and the PC will indicate that it will shut down in 60 seconds. Once the countdown timer reaches 0, the computer will restart.
