Bumerang

Worm Bumerang is a very dangerous spyware, which spreads in local area networks. It searches for PCs with shared resources and infects all executables there. When a user executes one of these files, the worm installs itself to the computer and starts a payload. It terminates some computer processes and tries to erase PC's built-in software and damage all the data on hard disks. As a result, the infected PC may hang and will not boot. In some cases an affected PC cannot be repaired and needs to be replaced.