TechSpot

trojan horse lop.AS Trojan, Unable To Work Out.

By k3rupt
Jan 17, 2007
  1. Hi, I am constantly getting popups from avg with a trojan - trojan horse lop.AS
    I am in dire need to remove this as i am currently doing video editing and it is very disruptive...

    Operating System - Windows Xp Pro Sp2
    Firewall - Sygate Personal Firewall 5.6 Build 2808
    Antivirus - Avg Free 7.5.432
    Antispyware - HAD Avg antispyware, removed it when it expired.

    HiJackThis Logg is posted as an attachment below, All help is Greatly Appreciated and Yes this Is my first post and yes i have read all the how to post things... Thanks,
     
  2. howard_hopkinso

    howard_hopkinso TS Rookie Posts: 24,177   +19

    Hello and welcome to Techspot.

    Very Important: Before deciding whether you should clean or reformat your system, go and read this thread HERE and decide what it is you want to do.

    If after reading the above, you wish to clean your system, do the following.

    Go and read the Viruses/Spyware/Malware, preliminary removal instructions. Follow all the instructions exactly.

    Post fresh HJT and AVG Antispyware logs as attachments into this thread, only after doing the above.

    Regards Howard :wave: :wave:

    This thread is for the use of k3rupt only. Please don`t post your own virus/spyware problems in this thread. Instead, open a new thread in our security and the web forum.
     
  3. k3rupt

    k3rupt TS Rookie Topic Starter

    Yea, i just did that.
     
  4. howard_hopkinso

    howard_hopkinso TS Rookie Posts: 24,177   +19

    In that case, Go back to this link HERE and follow the instructions for the renaming of HijackThis.exe. Then post a fresh HJT log as well as an AVG Antispyware log.

    Regards Howard :)

    This thread is for the use of k3rupt only. Please don`t post your own virus/spyware problems in this thread. Instead, open a new thread in our security and the web forum.
     
  5. k3rupt

    k3rupt TS Rookie Topic Starter

    Can you just tell me if theres anything suspicous in there?
     
  6. howard_hopkinso

    howard_hopkinso TS Rookie Posts: 24,177   +19

    Yes, your system is infected with several nasties. However, without you posting a fresh, renamed HJT log, I can`t tell if there`s anything else that may be hiding on your system. The whole purpose of renaming the HijackThis.exe file is because some of the newer malware can hide from the HijackThis.exe filename.

    It takes seconds to change the name of HJT and attach a fresh HJT log. I know it can take time for the AVG Antispyware scan, but it`s important that you provide an AVG Antispyware log.

    I can only help you, if you follow the instructions properly.

    Regards Howard :)

    This thread is for the use of k3rupt only. Please don`t post your own virus/spyware problems in this thread. Instead, open a new thread in our security and the web forum.
     
  7. k3rupt

    k3rupt TS Rookie Topic Starter

    Heres the hijack this logg, i HAD avg anti spyware installed, but then i uninstalled it after the trial was up, so wont that mean i cant use it?
     
  8. howard_hopkinso

    howard_hopkinso TS Rookie Posts: 24,177   +19

    After you`ve completed the instructions below, you should reinstall AVG Antispyware. Once the trial has finished, the programme will continue to work minus one or two features. All the instructions for AVG Antispyware can be found in this thread HERE.

    Download Vundofix from HERE.

    Double click the Vundofix.exe to run it.

    Right click in the vundofix window and click add files.

    Enter the full file path/s to the files you want Vundofix to delete and click the add files button, followed by the close window button. Click the remove vundo button and let Vundofix do it`s stuff.

    These are the filepaths you need to enter into Vundofix.

    C:\WINDOWS\SYSTEM32\byxyyya.dll
    C:\WINDOWS\system32\yuntiabd.dll

    You might want to copy and paste these instructions into a notepad file. Then you can have the file open in safe mode, so you can follow the instructions easier.

    Boot into safe mode, under your normal user name(NOT THE ADMINISTRATOR ACCOUNT). See how HERE.

    In Windows Explorer, turn on "Show all files and folders, including hidden and system". See how HERE.

    Click start/run and type services.msc into the run box and press the enter key.

    When the window appears, maximise it. Double click on the following services(if there) and select stop if they are running. Set the startup type to disabled. Click apply/ok for each service you disable.

    TaskUpdateSvc

    Close the services window.

    Open your task manager, by holding down the ctrl and alt keys and pressing the delete key.

    Click on the processes tab and end process for(if there).

    TaskUpdate.exe

    Close task manager.

    Run HJT with no other programmes open(except notepad). Click the scan button. Have HJT fix the following, by placing a tick in the little box next to(if there).

    O2 - BHO: (no name) - {2A484F5B-F91E-4E47-A13D-FB580EF5EB5B} - C:\WINDOWS\system32\byxyyya.dll

    O2 - BHO: (no name) - {3FD6B99C-A275-46ea-8FD1-3D63986E51E4} - C:\WINDOWS\system32\diuufidk.dll (file missing)

    O2 - BHO: (no name) - {7411F8BA-29A3-3216-9DE7-024AC0AAB9F6} - C:\WINDOWS\system32\viyjhai.dll (file missing)

    O2 - BHO: (no name) - {7E9CE523-F792-4728-88C8-4CA5B3D98993} - C:\WINDOWS\system32\ssttr.dll (file missing)

    O2 - BHO: (no name) - {f4d74aaa-a178-4463-846b-b4bc87a024e0} - C:\WINDOWS\system32\ixt2.dll (file missing)

    O4 - HKLM\..\Run: [DllRunning] rundll32.exe "C:\WINDOWS\system32\yuntiabd.dll",setvm

    O20 - Winlogon Notify: byxyyya - C:\WINDOWS\SYSTEM32\byxyyya.dll

    O20 - Winlogon Notify: byxyyya - C:\WINDOWS\SYSTEM32\byxyyya.dll

    O20 - Winlogon Notify: hgghiii - hgghiii.dll (file missing)

    O20 - Winlogon Notify: jkkiggd - jkkiggd.dll (file missing)

    O20 - Winlogon Notify: khfefee - khfefee.dll (file missing)

    O20 - Winlogon Notify: khfffed - khfffed.dll (file missing)

    O20 - Winlogon Notify: ssttr - C:\WINDOWS\system32\ssttr.dll (file missing)

    O20 - Winlogon Notify: winosz32 - winosz32.dll (file missing)

    O23 - Service: TaskUpdateSvc - Unknown owner - C:\WINDOWS\system32\TaskUpdate.exe

    Click on the fix checked button.

    Close HJT.

    Locate and delete the following bold files and/or directories(if there).

    C:\WINDOWS\system32\TaskUpdate.exe

    Reboot into normal mode and rehide your protected OS files.

    Post a fresh HJT log as well as the AVG Antispyware log.

    Regards Howard :)

    This thread is for the use of k3rupt only. Please don`t post your own virus/spyware problems in this thread. Instead, open a new thread in our security and the web forum.
     
  9. k3rupt

    k3rupt TS Rookie Topic Starter

    Ok, Done all that, haha Avg Spyware picked up 85 Threats. lol

    Heres the attachments, Thanks by the way,
     
  10. howard_hopkinso

    howard_hopkinso TS Rookie Posts: 24,177   +19

    Download the Pocket Killbox programme from HERE. Extract it but don`t run it yet.

    You might want to copy and paste these instructions into a notepad file. Then you can have the file open in safe mode, so you can follow the instructions easier.

    Boot into safe mode, under your normal user name(NOT THE ADMINISTRATOR ACCOUNT). See how HERE.

    In Windows Explorer, turn on "Show all files and folders, including hidden and system". See how HERE.

    Run the killbox.exe file. When it loads type the full path to the file you would like to delete in the field and check the delete file on reboot button. press the Delete File button (looks like a red circle with a white X). It will prompt you to reboot, select no until you have finished inputting the files you want to delete, only then allow it to reboot and hopefully your files will now be deleted. If your computer doesn`t automatically restart, restart it manually.

    This is the filepath you need to enter into killbox.

    C:\WINDOWS\SYSTEM32\byxyyya.dll

    Once your system has rebooted, rehide your protected OS files.

    Post a fresh HJT log.

    Regards Howard :)

    This thread is for the use of k3rupt only. Please don`t post your own virus/spyware problems in this thread. Instead, open a new thread in our security and the web forum.
     
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