npmsys.exe is a Trojan W32.Rbot-ALO. npmsys.exe opens a back door on IRC channels. npmsys.exe spreads via open network shares. npmsys.exe tries to terminate antiviral programs installed on a user computer. npmsys.exe monitors user Internet activity and private information. It sends stolen data to a hacker site. Related files: %System%\npmsys.exe More info: http://www.sophos.com/virusinfo/analyses... Removal: Kill npmsys.exe process and remove npmsys.exe from Windows startup using antivirus (also check How To Remove section)Startup Optimizer.