I can get another Tech to have a look at this as it seems to not be related to Malware.
This will clear away any of the files and folders that were created by ComboFix.
Go to :
Start > Run then copy and paste the following highlighted text below and click OK.
ComboFix /u
When ComboFix receives such an instruction, it will do the following:
a) Deletes the following files/folders:
* ComboFix.exe
* %system%\swxcacls.exe
* %system%\swsc.exe
* %system%\VFind.exe
* %system%\moveex.exe
* %system%\swreg.exe
* %systemroot%\catchme.exe
* \ComboFix
* \Qoobox
* \VundoFix Backups
* \Deckard
* \_OTMoveIt
* %systemroot%\erdnt\subs
b) Resets the clock settings.
c) Hides file extensions
d) Hides System/Hidden files
e) Clears System Restore cache and create new Restore point