krnlmgr.exe is a Trojan.Juny-A. krnlmgr.exe modifies data on the computer. Related files: %System%\krnlmgr.exe %System%\krnlmgr.dll More info: http://www.sophos.com/virusinfo/analyses... Removal: Kill krnlmgr.exe process and remove krnlmgr.exe from Windows startup using antivirus (also check How To Remove section)Startup Optimizer.