BAT.Tiers

This parasitic trojan is a batch-file infector, which usually acts by infected every BAT-file, which is found in the current directory. The code of infection is added to the end or the beginning of the host file, which makes it possible to call this routine each time the infected file is run. Although there's no reason to worry about great destruction, because this pest is quite harmless, it's strongly recommended to get rid of it as soon as possible.