explorer.exe using 99% of CPU

Run this Disable/Remove Windows Messenger to remove Windows Messenger. Do not confuse Windows Messenger with MSN Messenger because they are not the same. Windows Messenger is a frequent cause of popups.

Run C:\MGtools\analyse.exe by double clicking on it. 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) - {B930BA63-9E5A-11D3-A288-0000E80E2EDE} - (no file)
O4 - HKLM\..\Run: [QuickTime Task] "C:\Program Files\QuickTime\qttask.exe" -atboottime
O4 - HKLM\..\Run: [SunJavaUpdateSched] "C:\Program Files\Java\jre1.6.0_04\bin\jusched.exe"
O4 - HKCU\..\Run: [MSMSGS] "C:\Program Files\Messenger\msmsgs.exe" /background

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 code box into it (make sure you scroll all the way down in the code box to get all lines selected ):

Code:

File::
C:\WINDOWS\system32\AppCert\filter.drv
C:\WINDOWS\system32\AppCert\hb13a.dll"
C:\WINDOWS\system32\AppCert\options.dat
C:\WINDOWS\system32\AppCert\prx97w.dll
C:\WINDOWS\system32\AppCert\wsil32.dll
C:\WINDOWS\Temp\JETE8CF.tmp
C:\WINDOWS\Temp\JETEA85.tmp
Folder::
C:\WINDOWS\system32\AppCert
 
Registry::
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\AppCert] 
"Path"=- 
"CurrentState"=-
[HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\Session Manager\AppCertDlls] 
"AppSecDll"=- 
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager\AppCertDlls] 
"AppSecDll"=- 
[-HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\Session Manager\AppCertDlls] 
[-HKEY_LOCAL_MACHINE\system\currentcontrolset\control\session manager\appcertdlls]

• 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.


After reboot, now install the current version of Sun Java from: Sun Java Runtime Environment

Also delete all files and subfolders in the below folders except ones from the current date (Windows will not let you delete the files from the current day).
C:\WINDOWS\Temp
C:\Documents and Settings\Administrator\Local Settings\Temp

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!

 

You're welcome. Did you mean System Restore or do you mean a System Recovery to go back to how the PC was shipped to you?

Either way you should see the below:

How to Protect yourself from malware!

 

You're welcome. Surf safely!