msrexe.exe definition, relationships, removal:

msrexe.exe is an executable file that starts a malicious process, launches certain parasite components or runs a destructive payload. Even if the msrexe.exe file does nothing suspicious, its presence indicates that your computer is infected with a particular threat.
The msrexe.exe file is installed and used by a backdoor, which allows unathorized remote access to your computer.
You are highly advised to scan the system, delete executable msrexe.exe and terminate all the processes it started.
In some cases a presence of msrexe.exe does not mean that your system is infected. The file may actually belong to some fully legitimate applications and therefore must stay intact. If you are in doubt, please scan the msrexe.exe file using you regular spyware remover or antivirus program.