I am not sure if this is a threat or not

Log: [SBI $8E73A7FB] Shutdown: System32\wbem\logs\wmiprov.log (File, nothing done)
C:\Windows\System32\wbem\logs\wmiprov.log
Properties.size=1638
Properties.md5=3444AF45CC5C0F15E3EC0AE3619AC107
Properties.filedate=1372121733
Properties.filedatetext=2013-06-24 19:55:33

MS Direct3D: [SBI $C2A44980] Most recent application (Registry Change, nothing done)
HKEY_USERS\.DEFAULT\Software\Microsoft\Direct3D\MostRecentApplication\Name

MS Direct3D: [SBI $C2A44980] Most recent application (Registry Change, nothing done)
HKEY_USERS\S-1-5-21-2278797001-23810176-2723755335-1000\Software\Microsoft\Direct3D\MostRecentApplication\Name

MS Direct3D: [SBI $C2A44980] Most recent application (Registry Change, nothing done)
HKEY_USERS\S-1-5-18\Software\Microsoft\Direct3D\MostRecentApplication\Name

Hello,

Please do not ask for help in several places (via e-mail and in the forum) as this doubles our support time.
Thanks.

That are only usage tracks.
Usage tracks are your fingerprints in your system. Whenever you visit a page with your browser, or just open any file, that information is stored deep inside Windows. In most cases that is very useful – if you want to open that file again, you can select it from a list instead of typing the whole filename or browsing the whole directory structure again.

But in some cases you may want to hide your activity, because spyware and internet attackers may use that information. Spybot-S&D can remove some of the most important and common tracks on your system.
You may still decide to keep a threat, or just a usage track. Maybe you don't want your list of most recently used Word documents removed?

If you do not want to scan for them anymore you can exclude them from future scans.
Therefore run the Start Center and switch to advanced mode.
Now start Settings with a rightclick and choose "run as administrator".

Then open the tab "Categories“. Here you can untick the checkboxes in front of:
'Tracks.sbi' , 'Tracks.uti' and 'Cookies.sbi'.
Click Apply and OK afterwards.

Best regards
Sandra
Team Spybot

Sandra - perfect answer to the question I was researching here. Thank you so much!

- Katy :-)