Hijack.Regedit

Just found out that my up-to-date Norton 360 and Norton Power Eraser failed to detect something called "Hijack.Regedit" . I was able to detect and remove it with Malwarebytes Anti-Malware the free version. It didn't show up on the next scan either. I have heard there might be several version of this but in general how dangerous is "Hijack.Regedit" ? Is there anything else I should look out for even though it has been removed? Thanks in advance for any info you are able to provide.