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