I can't find that it's actually malware but such registry cleaners usually CAUSE more problems than this help.. I can find a few locations where it can be downloaded but none of them are well vetted. Uninstall it, then run full system scans with BOTh of the free malware removal tools below.
Malwarebytes Antimalware
SUPERAntispyware Removal Tool
Hope this helps.
Grif
Error End registry cleaner showed up operating on my computer when I booted up this morning. Don't know where it came from or why or what it actually is? Anybody familiar with this? Is it a nasty?

Chowhound
Comic Vine
GameFAQs
GameSpot
Giant Bomb
TechRepublic