I have been browsing and searching these forums in hope of discovering the fix for this issue. I own a Dell XPS 1640 laptop running Windows 7 Home Premium 64-bit edition. The current antivirus program is Avast! Home v5. I also run two antispyware programs, Webroot Spysweeper and Spybot Search & Destroy.
I allowed a buddy of mine to use my computer for approx. 4 days while his Apple Macbook Pro was in the shop to get the LCD screen replaced. Apparently that was a foolish move. After he returned it, I completed a sweep of my HDD, and Spysweeper discovered that there is a Hacktool called "App/Nirsoft-Gen" installed on my PC. It cannot quarantine or remove this rootkit.
Following some advice discovered for Win Vista, I downloaded GMER, Defogger, and ComboFix. However, only the Defogger software is able to run. GMER stops with an error stating that the file specified cannot be located. ComboFix, at least the version posted in the thread (http://www.bleepingcomputer.com/forums/topic296473.html
), is incompatible with Win7.
The Defogger ran as expected and is presently "disabled" for CD emulator drivers. Spybot also discovered two registry errors (Microsoft.WindowsSecurityCenter_disabled) and removed them. I also attempted to use the online Trendmicro Housecall v7.1 to remove the rootkit. Unsuccessful (it didn't detect it at all).
I want to get this malware off of my PC immediately. Any suggestions on how to go about removing it? Any assistance would be greatly appreciated.