This file is a harmful and undesirable program. Probably virus. It's recommended to delete it.
What is dcomx.exe Windows startup process
File name: dcomx.exe
Program name: System
Description: CIREBOT TROJAN
Information added by: Voivod at 18 April 2008
Hint: If dcomx.exe file is a virus or trojan, we recommend to use a antivirus software or registry cleaner.
We are presenting list of Windows processes, startup files.
Name of dcomx.exe is System. Some of them are viruses, so you should use a antivirus program.