CMH311Sec.exe is part of a product called known as Khmer Music 3.11 Sec and it is developed by KhmerMusic 3.11 has been developed by Mr. Chhuon Kimhak .
If you think that this file contains a virus or another malware, please download a virus scanner.
If CMH311Sec.exe is using too much CPU or too much memory in your system, it is possible that your file has been infected with a virus. Try to install an antivirus to see if it helps.
If you want to remove CMH311Sec.exe from your computer, just go to Start > Control Panel > Add/Remove programs and select Khmer Music 3.11 Sec from the list.
You may try contacting KhmerMusic 3.11 has been developed by Mr. Chhuon Kimhak, the developer of CMH311Sec.exe and ask for more information.