After some research, I concluded that this was a Symantec-related file that had been corrupted. Additionally, upon starting Malwarebytes in Safe Mode, it displayed a message stating that it was corrupted as well.
From a forum suggestion, I ran Scannow at a Command Prompt which led to me having to replace the file tcpmon.ini following the guidance provided from the forum.
After restoring the file, my internet connection resumed working properly. I also uninstalled Symantec and re-installed Malwarebyets successfully. About a day later, my internet cut out again.
Convinced I had a virus of some type, I ran Malwarebytes to see if it could find anything, and it found no malicious items. From there, I concluded it was probably a Rootkit, so I ran TDSSKiller, which found nothing. From there, I installed and ran ComboFix from the desktop (I have the log if needed). Ultimately ComboFix stated that there was an infected System file which was c:\windows\SysWow64\drivers\ntfs.sys
ComboFix attempted to create a replacement for the infected System file, but said it could not and needed to conduct an intensive search. After about 5 minutes, my computer restarted and rebooted with a message stating C:\Windows\System32\GfxUI.exe could not run because a file related to it was not running properly.
After this restart, Windows wanted to update upon Shut Down, so I let it, and when it rebooted the previous Dialogue box about C:\Windows\System32\GfxUI.exe did not appear. Then, I ran Rkill to see if ComboFix had deleted the Rootkit or not, and it stated C:\Windows\SysWOW64\rundll32.exe process was terminated, so I assumed not. I gave ComboFix another shot (I also have that log).
I ran Rkill again after Combofix scanned, and it said it terminated the same process as before. Can someone help me clarify what the problem is how I can resolve it? Im completely out of ideas. Thanks.
Edited by hamluis, 22 July 2012 - 06:53 PM.
Moved from Win 7 to Am I Infected - Hamluis.