rundll btask.dll error

Welcome to Major Geeks!

First please give the below a try and let me know what happens.

I'm betting malware has changed the Windows File Association for .exe files. Let's fix it.

Now Copy the bold text below to notepad. Save it as ExeFix.reg to your desktop. Be sure the "Save as" type is set to "all files". Then Click Start, Run, and enter regedit and click OK. This will open the Registry Editor.

In the Registry Editor click File and Import. Navigate to the ExeFix.reg patch you saved on your Desktop and double click on it. Click OK at the prompt to add to the registry. Do you get a success message for this?

After doing the above, continue on to the below.

Please follow the instructions in the below link and attach the requested logs when you finish these instructions. If something does not run, write down the info to explain to us later but keep on going. Do not assume that because one step does not work that they all will not.

READ & RUN ME FIRST. Malware Removal Guide

 

So you don't need a new PC after all!

You have some more cleaning to do.

Run C:\MGtools\analyse.exe by double clicking on it (Note: if using Vista, don't double click, use right click and select Run As Administrator). This is really HijackThis (select Do a system scan only) and select the following lines but DO NOT CLICK FIX until you exit all browser sessions including the one you are reading in right now:

O2 - BHO: (no name) - {02478D38-C3F9-4efb-9B51-7695ECA05670} - (no file)
O2 - BHO: WormRadar.com IESiteBlocker.NavFilter - {3CA2F312-6F6E-4B53-A66E-4E65E497C8C0} - C:\Program Files\AVG\AVG8\avgssie.dll (file missing)
O2 - BHO: Editor plugin - {54900915-99E3-4245-A97D-0637BF966F46} - cortals.dll (file missing)
O2 - BHO: AVG Security Toolbar - {A057A204-BACC-4D26-9990-79A187E2698E} - C:\PROGRA~1\AVG\AVG8\AVGTOO~1.DLL (file missing)
O3 - Toolbar: AVG Security Toolbar - {A057A204-BACC-4D26-9990-79A187E2698E} - C:\PROGRA~1\AVG\AVG8\AVGTOO~1.DLL (file missing)
O18 - Protocol: linkscanner - {F274614C-63F8-47D5-A4D1-FBDDE494F8D1} - C:\Program Files\AVG\AVG8\avgpp.dll (file missing)
O21 - SSODL: tDlRshNlsLd - {C4801B9E-6E2A-B134-6DE1-E39CABD610A1} - C:\WINDOWS\system32\abwx.dll (file missing)

After clicking Fix, exit HJT.

Now we need to use ComboFix to remove a bunch of malware files.

• Make sure that combofix.exe that you downloaded while doing the READ & RUN ME is on your Desktop but Do not run it!
  • If it is not on your Desktop, the below will not work.
• Open Notepad and copy/paste the text in the below quote box into it:

• Save the above as CFscript.txt and make sure you save it to the same location (should be on your Desktop) as ComboFix.exe
• At this point, you MUST EXIT ALL BROWSERS NOW before continuing!
• You should have both the ComboFix.exe and CFScript.txt icons on your Desktop.
• Now use your mouse to drag CFscript.txt on top of ComboFix.exe
• Follow the prompts.
• When it finishes, a log will be produced named c:\combofix.txt
• I will ask for this log below

Note:

Do not mouseclick combofix's window while it is running. That may cause it to stall.


Copy the bold text below to notepad. Save it as fixme.reg to your desktop. Be sure the "Save as" type is set to "all files" Once you have saved it double click it and allow it to merge with the registry.

Make sure that you tell me if you receive a success message about adding the above
to the registry. If you do not get a success message, it definitely did not work.

Now run Ccleaner!

Now run the C:\MGtools\GetLogs.bat file by double clicking on it.

Then attach the below logs:

• C:\ComboFix.txt
• C:\MGlogs.zip

Make sure you tell me how things are working now!