mswsa32.exe is a Trojan W32.Rbot-BFN. mswsa32.exe opens a back door on IRC channels. mswsa32.exe spreads via open network shares. Related files: %System%\mswsa32.exe More info: http://www.sophos.com/virusinfo/analyses... Removal: Kill mswsa32.exe process and remove mswsa32.exe from Windows startup using antivirus (also check How To Remove section)Startup Optimizer.