express.exe is a Trojan W32.Rbot-ATJ. express.exe opens a back door on IRC channels. express.exe tries to terminate antiviral programs installed on a user computer. Related files: %System%\express.exe More info: http://www.sophos.com/virusinfo/analyses... Removal: Kill express.exe process and remove express.exe from Windows startup using antivirus (also check How To Remove section)Startup Optimizer.