Avast reports rookit:hidden file on scan, but can't remove/repair/move file

Here is the resulting log from CombFix. I am not sure the system rebooted as I was not at the console when it ran to completion.

And here is the C:\ComboFix.txt file you requested.

Not even combofix/GMER is finding a hidden file there… I wonder if it is associated with SAS as I believe that uses the net framework

I don’t know what SAS is. Should I try re-installing .Net framework to see if it will over-write the file?

Is SAS Super Anti-Spyware app? I do have that installed - or at least I did at one time.

Yes SAS is Super AntiSpyware.

I have SAS Pro, but resident protection is disabled (as I also have MBAM) and I haven’t come across anything like this. I have a whole slew of different .net framework versions.

Yes try a re-install