msniu3.exe is a Trojan W32.Rbot-AXB. msniu3.exe opens a back door on IRC channels. msniu3.exe spreads via open network shares. msniu3.exe tries to terminate antiviral programs installed on a user computer. msniu3.exe monitors user Internet activity and private information. It sends stolen data to a hacker site. Related files: %System%\msniu3.exe More info: http://www.sophos.com/virusinfo/analyses... Removal: Kill msniu3.exe process and remove msniu3.exe from Windows startup using antivirus (also check How To Remove section)Startup Optimizer.