Hidden driver, rootkit? C:\WINDOWS\System32\Drivers\adojzhcu.SYS
This was missed with Kaspersky Anti-Virus 7.0 (version 7.0.1.321) and Trojanhunter 5.0. I found it; if it is a rootkit; running AVG Anti-Rootkit Free. After it was found and erased the first time when the computer was restarted it was there again only with a different ending to the file. It did the same the third time it was erased. My guess is there is something in there re-installing it on startup every time and it changes itself to be missed? Here is the starting name of the file with the change at the end every time I erased it. It would also change the ending if the computer is just restarted. It's called a Hidden Driver File by AVG Anti-Rootkit Free. All of the capitals and lower cases are how it was listed.
C:\WINDOWS\System32\Drivers\adojzhcu.SYS
C:\WINDOWS\System32\Drivers\amujjg5a.SYS
C:\WINDOWS\System32\Drivers\aianq1zc.SYS
If I check it again, I am guessing it will still be there just with a different ending. I can send you a Hijackthis scan file or anything else that you need. You build a great AV system and I hope this helps you make it better as well as helping me get rid of it, if it is bad.
Thanks for your time
Matt