C:\WINDOWS\SVCHOST.EXE Trojan

Discussion in 'Malware Help (A Specialist Will Reply)' started by dkel22, Nov 3, 2008.

  1. dkel22

    dkel22 Private E-2

    I have been infected with a trojan agent_r.dp and it is located at c:\windows\svchost.exe. I have tried all the methods in the READ & RUN and followed the instructions provided to other users with the same type of situation. I however encounter an issue when trying to run Combofix, it will reach Stage_51 and then I get a Blue Screen of Death and have to reboot my PC. Many virus/malware programs detect the virus and attempt to remove it, but it keeps coming back. Any assistance would be greatly appreciated. Attached are the files from SuperAntiSpyware, Malwarebytes and mgtools and combofix errors out so I have no log from that application.
     

    Attached Files:

  2. dkel22

    dkel22 Private E-2

    I was able to get combofix to complete in SAFE mode and here is the log from that run.
     

    Attached Files:

  3. bjgarrick

    bjgarrick MajorGeeks Admin - Malware Expert

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    Pre-Instructions:
    1. First, please disable any antivirus and/or antispy programs you have installed so they will not block this fix.
    2. Print out these instructions or save them to a text file so that you can operate with All Browser Windows CLOSED.

    Step 1:
    Please look in Add/Remove Programs for the following and uninstall if found. If you get any errors just make a note and proceed.


    Step 2:
    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:
    Again, make sure ALL browser windows are closed when you click FIX.

    Step 3:
    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.

    Step 4:
    Default Security Settings

    To Default Security Settings:
    For Internet Explorer 6 users:
    Click Start > Run > type inetcpl.cpl and press ENTER, when Internet Properties comes up navigate to the Security Tab and click Default Level for the following:
    • Internet
    • Local Intranet
    • Trusted Sites
    • Restricted Sites.
    Click OK to exit.

    For Internet Explorer 7 users:
    Click Start > Run > type inetcpl.cpl and press ENTER, when Internet Properties comes up, navigate to the Security Tab and simply click the "Reset all zones to default level" button. Click OK to exit.

    Step 5:
    Please download ATF Cleaner by Atribune. This program does not require an installation. The executable actually runs the program.

    NOTE: This program is for Windows XP and Windows 2000 only. ATF Cleaner will remove all files from the items that are checked so if you have some cookies you'd like to save. Please move them to a different directory first.
    • Double-click ATF-Cleaner.exe to run the program.
    • Under Main choose: Select All
    • Click the Empty Selected button.
    If you use Firefox browser
    • Click Firefox at the top and choose: Select All
    • Click the Empty Selected button.
      • NOTE: If you would like to keep your saved passwords, please click No at the prompt.
    If you use Opera browser
    • Click Opera at the top and choose: Select All
    • Click the Empty Selected button.
      • NOTE: If you would like to keep your saved passwords, please click No at the prompt.
    Click Exit on the Main ATF Cleaner menu to close the program.

    Step 6:
    Next I would like you to install the current version of Sun Java: Sun Java Runtime Environment

    Step 7:
    Now run the C:\MGtools\GetLogs.bat file by double clicking on it (Note: if using Vista, don't double click, use right click and select Run As Administrator).

    Then attach the below logs:
    • C:\ComboFix.txt
    • C:\MGlogs.zip
    Let me know of any problems you may have encountered with the above instructions and also let me know how things are running now.
     

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