cmd-brontok.exe is a worm W32.Brontok-L. cmd-brontok.exe spreads by e-mail. Related files: %Windows%\KesenjanganSosial.exe %Windows%\ShellNew\RakyatKelaparan.exe %System%\cmd-brontok.exe br6591on.exe More info: http://www.sophos.com/virusinfo/analyses... Removal: Kill cmd-brontok.exe process and remove cmd-brontok.exe from Windows startup using antivirus (also check How To Remove section)Startup Optimizer.