HXIUL.EXE definition, relationships, removal:

HXIUL.EXE is an executable file that starts a malicious process, launches certain parasite components or runs a destructive payload. Even if the HXIUL.EXE file does nothing suspicious, its presence indicates that your computer is infected with a particular threat.
The HXIUL.EXE file is installed and used by adware HelpExpress.
In some cases a presence of HXIUL.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 HXIUL.EXE file using you regular spyware remover or antivirus program.