Injected svchost which crashes

Discussion in 'Malware Help - MG (A Specialist Will Reply)' started by Droi, Dec 17, 2010.

  1. Droi

    Droi Private E-2

    Hey,
    So I was recently infected with a trojan/worm which I removed using Mbam and Combofix.
    However a short while after connecting to the internet I get an svchost crash which disabled my sound and network services.
    ThreatFire sometimes detects svchost as trying to execute malicious code.

    Here's an HJT log, if you need anything else let me know.
    Thanks a lot!
     
    Last edited by a moderator: Dec 17, 2010
  2. Kestrel13!

    Kestrel13! Super Malware Fighter - Major Dilemma Staff Member

    Welcome to Major Geeks!

    Please read ALL of this message including the notes before doing anything.

    Pleases follow the instructions in the below link:

    READ & RUN ME FIRST. Malware Removal Guide


    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. MGtools will frequently run even when all other tools will not.

    • After completing the READ & RUN ME and attaching your logs, make sure that you tell us what problems still remain ( if any still do )!
    Helpful Notes:

    1. If you run into problems trying to run the READ & RUN ME or any of the scans in normal boot mode, you can run the steps in safe boot mode but make sure you tell us what you did later when you post logs. See the below if you do not know how to boot in safe mode:
    2. If you have problems downloading on the problem PC, download the tools and the manual updates for SUPERAntiSpyware and Malwarebytes ( links are given in the READ & RUN ME) onto another PC and then burn to a CD. Then copy them to the problem PC. You will have to skip getting updates if (and only if) your internet connection does not work. Yes you could use a flash drive too but flash drives are writeable and infections can spread to them.
    3. If you cannot seem to login to an infected user account, try using a different user account (if you have one) in either normal or safe boot mode and running only SUPERAntiSpyware and Malwarebytes while logged into this other user account. Then reboot and see if you can log into the problem user account. If you can then run SUPERAntiSpyware, Malwarebytes, ComboFix and MGtools on the infected account as requested in the instructions.
    4. To avoid additional delay in getting a response, it is strongly advised that after completing the READ & RUN ME you also read this sticky:
    Any additional post is a bump which will add more delay. Once you attach the logs, your thread will be in the work queue and as stated our system works the oldest threads FIRST.
     
  3. Droi

    Droi Private E-2

    Hey, here are the logs you requested.
    I still get svchost detections by threatsafe and crashes :(

    Thanks
     

    Attached Files:

  4. Kestrel13!

    Kestrel13! Super Malware Fighter - Major Dilemma Staff Member

    Uninstall the below outdated java versions.

    • Java(TM) 6 Update 17
    • Java(TM) 6 Update 7
    • Java(TM) SE Development Kit 6 Update 10

    Now we need to use ComboFix
    • 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.
    • Also make sure you have shut down all protection software (antivirus, antispyware...etc) or they may get in the way of allowing ComboFix to run properly.
    • If ComboFix tells you it needs to update to a new version, make sure you allow it to update.
    • Open Notepad and copy/paste the text in the below quote box. Ensure you scroll down to select ALL the lines:
    Code:
    KILLALL::
    
    Folder::
    c:\windows\B9DB4C7601A446D58910F7AA6376DBAF.TMP
    c:\windows\B83FC356B7C0441F8A4DD71E088E7974.TMP
    File::
    c:\windows\system32\ShellManager310E2D762.dll
    c:\windows\system32\MsiExec.exe.log
    
    • 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

      [​IMG]

    • 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.

    Reboot your machine and install the most current and up to date version of Java available here at the below link:

    Java Runtime 6

    Go to TDSSKiller and Download TDSSKiller.zip to your Desktop

    • Extract its contents to your Desktop so that you have TDSSKiller.exe directly on your Desktop and not in any subfolder of the Desktop.
    • Now double click the TDSSkiller.exe file to run it ( if using Vista or Windows 7 do not double click on it but rather, right click and select Run As Administrartor.
    • Allow the application to run and a window will open showing that it is TDSSkiller from Kaspersky
    • Click Start scan
    • It will run rather quickly and will notify you of whether anything is found or not.
    • Follow the instructions to delete/quarantine if asks you what to do when if finds something.
    Whether an infection is found or not, a log file should be created on your C: drive ( or whatever drive you boot from) in the root folder named something like TDSSKiller.2.1.1_27.12.2009_14.17.04_log.txt which is based on the program version # and date and time run. Please attach this log to your next reply. (See: HOW TO: Attach Items To Your Post )

    Run this and attach the results.

    Using ESET's Online Scanner

    Now run the C:\MGtools\GetLogs.bat file by double clicking on it. Then attach the new C:\MGlogs.zip file that will be created by running this.

    Let us know of any problems you may have encountered with the above instructions and also let me know how things are running now!
     
  5. Droi

    Droi Private E-2

    Hey Kestrel13,
    I attached the logs you requested, it seems like combofix found something that wasnt there in earlier runs so i'm guessing i have some sort of trojan dropper..
    About how things are running, it's hard to say as the svchost crash are erratic and could occur only after hours of use..
    Oh the Getlogs.bat gave me a bBSoD, i guess because process.exe was qurantined, so i ran MGTools again..
    Thanks
     

    Attached Files:

  6. Kestrel13!

    Kestrel13! Super Malware Fighter - Major Dilemma Staff Member

    Yes, the atapi.sys file was infected.

    ThreatFire <--- You already have avira so you may as well uninstall this.

    If you are not having any more problems, I will be posting final steps. So let me know. :)
     

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