Virus-like program that spreads automatically to other computers by sending itself out by email or by any other means. A program that propagates itself by attacking other machines and copying itself to the affected machine.
Worms have self-replicating code that travels from machine to machine by various means. A worms first objective is merely propagation. Worms can be destructive depending on what payload they have been given. Worms may replace files, but do not insert themselves into files.
W32.Sasser.B.Worm is a variant of W32.Sasser.Worm. It attempts to exploit the LSASS vulnerability described in Microsoft Security Bulletin MS04-011. This worm spreads by scanning randomly selected IP addresses for vulnerable systems.
- Make sure to have the latest patches from http://windowsupdate.microsoft.com - If you get a "shutdown in progress" message, you have 1 minute to go to Start > Run and there type "shutdown -a". This will abort the shutdown process, allowing for more time for removal. - Get a good antivirus software to remove this.