Csm.exe is a worm W32.Zotob.B. Csm.exe tries to terminate antiviral programs installed on a user computer. Csm.exe spreads using the vulnerability in Microsoft Windows Plug and Play Service (Microsoft Security Bulletin MS05-039). Related files: %System%\csm.exe Adds the value: "csm Win Updates" = "csm.exe" to the Windows startup registry keys. More info: http://securityresponse.symantec.com/avc... Removal: Kill csm.exe process and remove csm.exe from Windows startup using antivirus (also check How To Remove section)Startup Optimizer.