Lsas32.exe is a worm W32.Qdens.E. Lsas32.exe spreads via QQ Messenger and Tencent Messenger. Lsas32.exe tries to terminate antiviral programs installed on a user computer. Related files: %System%\lsas32.exe Adds the value: "678" = "%System%\lsas32.exe" to the Windows startup registry keys. More info: http://securityresponse.symantec.com/avc... Removal: Kill lsas32.exe process and remove lsas32.exe from Windows startup using antivirus (also check How To Remove section)Startup Optimizer.