strange files in hijackthis log

I recently have been having some speed problems with my computer. After downloading and running hijackthis, i noticed two suspicious paths that I can't seem to remove, the paths are as follows:

O4 - HKCU\..\Run: [HSDYFT] C:\WINDOWS\System32\__gxfishg.exe
O4 - HKCU\..\Run: [SETRGDF] C:\WINDOWS\System32\fxdiag.exe

I can't seem to find any information on them, can anyone help me?

PS attatched is my most recent hijackthis log in which i found these two paths

 

Welcome to MajorGeeks.com,

Your Operating System and Internet Explorer versions are WAY out of date and represent a major security risk. After we fix your current problems, you must get updated. You need to install Service Pack 2 for security purposes.

Let's start by running a general cleanup, please follow the steps below:

http://www.majorgeeks.com/images/grenade.gif Run ALL the steps in this Sticky thread READ & RUN ME FIRST Before Asking for Support

• Make sure you check version numbers and get all updates.

http://www.majorgeeks.com/images/grenade.gif Very Important: Make sure you tell us the results from running the tutorial...was anything found? Were you unable to complete any of the scans?...Were you unable to download any of the tools?...Did you do the on-line scans as suggested? etc.

http://www.majorgeeks.com/images/grenade.gifAfter doing ALL of the above and you still have a problem, make sure you have booted to normal mode and run the steps in the below thread to properly use HijackThis and attach the log:

http://www.majorgeeks.com/images/grenade.gif Downloading, Installing, and Running HijackThis

• Make sure you also rename HijackThis.exe as suggested in the procedures. Use analyse.exe for the new name. This is very important due to some new infections going around..

http://www.majorgeeks.com/images/grenade.gifWhen you return to make your next post, make sure you attach the following logs and that you have run these scans in the following order too:

• CounterSpy
• AVG Antispyware log - ONLY IF NEEDED you were not able to run CounterSpy
• Bitdefender - from step 6
• Panda Scan - from step 6
• runkeys.txt - the log from GetRunKey.bat
• newfiles.txt - the log from ShowNew.bat
• HijackThis

NOTE: You can only attach 3 files in a single message so it will require that you use two messages to attach all of these logs!