I was hit by Antivirus System Pro.
Avast did not stop it, but Avast did find sysguard.exe and deleted it, but it kept coming.
Superantispyware did not stop it.
Found iehelper.dll in System 32, removed it.
Found 'Program Files\hkshbx' folder that had 'kkiwsysguard.exe' in it - Removed folder and exe file.
Found the above program and exe file in Startup toolbar in 2 locations by using msconfig and unchecked configuration in both locations. I do not know how to completely remove the configurations from the tool bar, but they don't try to start at startup.
That made Antivirus System Pro pop-up go away.
Maxim777