lel.exe is a worm W32.Lile-A. lel.exe spreads via open network shares. lel.exe tries to terminate antiviral programs installed on a user computer. Related files: %Windows%\MSRundll32.exe %Windows%\lel.exe More info: http://www.sophos.com/virusinfo/analyses... Removal: Kill lel.exe process and remove lel.exe from Windows startup using antivirus (also check How To Remove section)Startup Optimizer.