Trojan - Just keeps coming back.

Discussion in 'Malware Help (A Specialist Will Reply)' started by ekim401, Apr 21, 2010.

  1. ekim401

    ekim401 Private E-2

    Hey everyone, I'm new here but not to viruses. My weakness however happens to be dealing with Trojans...and this one is no exception! I've run every anti-spyware/malware/trojan program you can think of (Most of which won't update) and only Malwarebytes finds the Trojan...but when I remove the registry keys they are back within seconds.

    Here is the MB log:

    Malwarebytes' Anti-Malware 1.45
    www.malwarebytes.org

    Database version: 4020

    Windows 6.1.7600 (Safe Mode)
    Internet Explorer 8.0.7600.16385

    4/21/2010 10:56:25 PM
    mbam-log-2010-04-21 (22-56-25).txt

    Scan type: Full scan (C:\|)
    Objects scanned: 150405
    Time elapsed: 10 minute(s), 27 second(s)

    Memory Processes Infected: 0
    Memory Modules Infected: 0
    Registry Keys Infected: 0
    Registry Values Infected: 0
    Registry Data Items Infected: 2
    Folders Infected: 0
    Files Infected: 0

    Memory Processes Infected:
    (No malicious items detected)

    Memory Modules Infected:
    (No malicious items detected)

    Registry Keys Infected:
    (No malicious items detected)

    Registry Values Infected:
    (No malicious items detected)

    Registry Data Items Infected:
    HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\DhcpNameServer (Trojan.DNSChanger) -> Data: 93.188.166.105 93.188.161.105 1.2.3.4 -> Quarantined and deleted successfully.

    HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\Interfaces\{f6294753-90ce-45bb-a75c-e1c2e170fd1d}\DhcpNameServer (Trojan.DNSChanger) -> Data: 93.188.166.105 93.188.161.105 1.2.3.4 -> Quarantined and deleted successfully.


    Folders Infected:
    (No malicious items detected)

    Files Infected:
    (No malicious items detected)




    Any help would be appreciated!
     
  2. chaslang

    chaslang MajorGeeks Admin - Master Malware Expert Staff Member

    Welcome to Major Geeks!

    The infection you have is known to infect router hardware. If you have a router hooked up then you need to follow the instructions for your hardware and reset it to factory default settings. Normally there is a recessed push button type switch that needs to be held down for some number of seconds to do this. After resetting to factory defaults on your router, you will need to reconfigure the router for your network if you have made any changes to the default network setup.

    If the above does not fix your problem, continue on with ALL of the below. Please note not to post any logs inline with your message like you did with the Malwarebytes log.


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

    Please 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. ekim401

    ekim401 Private E-2

    RootRepeal sasy "FOP DeviceIOcontrol

    Error code 0000024
     

    Attached Files:

  4. ekim401

    ekim401 Private E-2

    Also, I'm using Windows 7 x86...and in the taskbar it is showing no internet connectivity (Little computer icon with red x through it). Yet I am obviously connected, I can go on any website I want except anti-spyware/malware sites...and occasionally if I go to a site it will redirect me to wellaction.com.

    I can ping loopback, gateway, other pc's on my network and websites through cmd.

    Another possible issue is my DNS servers...there are (3) of them...1 being 1.2.3.4 and even when I get rid of the 1.2.3.4 it comes back.

    Thanks for your help.
     
    Last edited: Apr 23, 2010
  5. chaslang

    chaslang MajorGeeks Admin - Master Malware Expert Staff Member

    Did you recently install/run HitmanPro?


    Make sure that you shutdown all protection software while doing the below.



    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 has expired or need to be updated to a new version, make sure you allow it to update.
    • 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.

    Now download the current version of MGtools and save it to your root folder. Overwrite your previous MGtools.exe file with this one.

    Run MGtools.exe ( Note: If using Vista make sure UAC is still disabled. Also don't double click on it, use right click and select Run As Administrator )

    Now attach the below log:
    • C:\ComboFix.txt
    • C:\MGlogs.zip
    Make sure you tell me how things are working now!
     
  6. ekim401

    ekim401 Private E-2

    I will let you know as soon as I get home. Thanks again for the help!
     
  7. ekim401

    ekim401 Private E-2

    Still have the same symptoms.
     

    Attached Files:

  8. ekim401

    ekim401 Private E-2

    Thanks for your help, but I'm going to format tonight...I can't take it anymore. I'm admitting defeat!
     
  9. chaslang

    chaslang MajorGeeks Admin - Master Malware Expert Staff Member

    You're welcome.

    Okay! We just needed to get those registry entries removed and possibly reset your router to default settings since DNS infections will sometimes get into the router. If you have problems after formatting, reset your router to factory defaults.

    Also check out the below:

    How to Protect yourself from malware!
     

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