You should be able to manually add this one to the chest, C:\hp\KBD\KbdStub.exe
Open the chest and right click in the Chest and select Add (see image), from the next window navigate to where you have the sample (C:\hp\KBD\KbdStub.exe) and add it to the chest. Once in the chest, right click on the file and select 'Submit to virus lab...' complete the form and submit as a possible False Positive, the file will be uploaded during the next update.
This only sends a copy to the chest, the original remains in place.
So it would now be possible to Extract a copy to the Suspect folder and upload to virustotal as I mentioned in my first reply.
