comp.exe definition, relationships, removal:

comp.exe is an executable file that starts a malicious process, launches certain parasite components or runs a destructive payload. comp.exe is installed and used by HFN.
You are highly advised to scan the system, delete executable comp.exe and terminate all the processes it started.

Please note that the comp.exe file actually may be a fully legitimate part of the operating system, as it is also used by Windows as a system process. Often parasites use files with unsuspicious names, but malicious functionality. You should always carefully check the file before deleting it. It may not be related with malware, but can be required by your essential programs to work properly.