TechSpot

Trojan causing the Internet to slow down on my laptop

Solved
By noobkiller69
Aug 15, 2010
  1. During last week or this week, the internet on my laptop has been loading very slowly (ie. Google normally load instantly but now take a few minutes to load). After running an Avira scan, it detected a few files, so i had it quarantine. After I reset the laptop, an error message pops up saying that winfna32.rom is missing. This was one the file detected by Avira as a Trojan Horse.

    So could someone please review the logs attached to this post from following the 6 steps. Thank You
     

    Attached Files:

  2. Broni

    Broni Malware Annihilator Posts: 47,082   +259

    Please download ComboFix from Here or Here to your Desktop.

    **Note: In the event you already have Combofix, this is a new version that I need you to download. It is important that it is saved directly to your desktop**
    1. Please, never rename Combofix unless instructed.
    2. Close any open browsers.
    3. Close/disable all anti virus and anti malware programs so they do not interfere with the running of ComboFix.
      • Very Important! Temporarily disable your anti-virus, script blocking and any anti-malware real-time protection before performing a scan. They can interfere with ComboFix or remove some of its embedded files which may cause "unpredictable results".
      • Click on this link to see a list of programs that should be disabled. The list is not all inclusive. If yours is not listed and you don't know how to disable it, please ask.
      NOTE1. If Combofix asks you to install Recovery Console, please allow it.
      NOTE 2. If Combofix asks you to update the program, always do so.
      • Close any open browsers.
      • WARNING: Combofix will disconnect your machine from the Internet as soon as it starts
      • Please do not attempt to re-connect your machine back to the Internet until Combofix has completely finished.
      • If there is no internet connection after running Combofix, then restart your computer to restore back your connection.
    4. Double click on combofix.exe & follow the prompts.
    5. When finished, it will produce a report for you.
    6. Please post the "C:\ComboFix.txt"
    **Note: Do not mouseclick combofix's window while it's running. That may cause it to stall**

    Make sure, you re-enable your security programs, when you're done with Combofix.

    DO NOT make any other changes to your computer (like installing programs, using other cleaning tools, etc.), until it's officially declared clean!!!
     
  3. noobkiller69

    noobkiller69 TS Rookie Topic Starter Posts: 17

    Here is the Combofix log that you requested for.
     

    Attached Files:

  4. Broni

    Broni Malware Annihilator Posts: 47,082   +259

    It looks clean :)

    Uninstall Combofix:
    Go Start > Run [Vista users, go Start>"Start search"]
    Type in:
    Combofix /Uninstall
    Note the space between the "Combofix" and the "/Uninstall"
    Click OK (Vista users - press Enter).
    Restart computer.

    ====================================================================

    Download MBRCheck to your desktop

    Double click MBRCheck.exe to run (Vista and Windows 7 users, right click and select Run as Administrator).
    It will show a black screen with some data on it.
    A report called MBRcheckxxxx.txt will be on your desktop
    Open this report and post its content in your next reply.

    ======================================================================

    Download OTL to your Desktop.

    * Double click on the icon to run it. Make sure all other windows are closed and to let it run uninterrupted.
    * Under the Custom Scan box paste this in:



    netsvcs
    drivers32 /all
    %SYSTEMDRIVE%\*.*
    %systemroot%\system32\Spool\prtprocs\w32x86\*.dll
    %systemroot%\system32\*.wt
    %systemroot%\system32\*.ruy
    %systemroot%\Fonts\*.com
    %systemroot%\Fonts\*.dll
    %systemroot%\system32\spool\prtprocs\w32x86\*.tmp
    %systemroot%\*. /mp /s
    /md5start
    /md5stop
    CREATERESTOREPOINT
    %systemroot%\system32\*.dll /lockedfiles
    %systemroot%\Tasks\*.job /lockedfiles
    %systemroot%\System32\config\*.sav
    %systemroot%\system32\user32.dll /md5
    %systemroot%\system32\ws2_32.dll /md5
    %systemroot%\system32\ws2help.dll /md5
    HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows\WindowsUpdate\AU
    HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\WindowsUpdate\Auto Update\Results\Install|LastSuccessTime /rs



    * Click the Quick Scan button. Do not change any settings unless otherwise told to do so. The scan wont take long.
    • When the scan completes, it will open two notepad windows: OTL.txt and Extras.txt. These are saved in the same location as OTL.
    • Please copy (Edit->Select All, Edit->Copy) the contents of these files, one at a time, and post them back here.
     
  5. noobkiller69

    noobkiller69 TS Rookie Topic Starter Posts: 17

    The internet is still very slow. All that cleaning didn't really made a different to the speed. Here are the information you requested for.
     

    Attached Files:

  6. Broni

    Broni Malware Annihilator Posts: 47,082   +259

    Which browser do you use?
    Did you try different browser to compare?
    What is your ISP advertised speed?
    Please, go here: http://www.speedtest.net/ and post your "down" and "up" speeds.

    ==========================================================================

    We need to remove old Java version and its remnants...

    Download JavaRa to your desktop and unzip it to its own folder
    • Run JavaRa.exe (Vista users! Right click on JavaRa.exe, click Run As Administrator), pick the language of your choice and click Select. Then click Remove Older Versions.
    • Accept any prompts.

    =====================================================================

    Run OTL
    • Under the Custom Scans/Fixes box at the bottom, paste in the following

      Code:
      :OTL
      O2 - BHO: (no name) - {5C255C8A-E604-49b4-9D64-90988571CECB} - No CLSID value found.
      O4 - HKLM..\Run: [NDSTray.exe]  File not found
      O6 - HKLM\Software\Policies\Microsoft\Internet Explorer\Restrictions present
      O7 - HKCU\Software\Policies\Microsoft\Internet Explorer\Control Panel present
      O16 - DPF: {E2883E8F-472F-4FB0-9522-AC9BF37916A7} http://platformdl.adobe.com/NOS/getPlusPlus/1.6/gp.cab (Reg Error: Key error.)
      O28 - HKLM ShellExecuteHooks: {AEB6717E-7E19-11d0-97EE-00C04FD91972} - Reg Error: Key error. File not found
      @Alternate Data Stream - 160 bytes -> C:\ProgramData\TEMP:FB1B13D8
      
      
      :Services
      
      :Reg
      
      :Files
      
      :Commands
      [purity]
      [emptytemp]
      [emptyflash]
      [Reboot]
      
    • Then click the Run Fix button at the top
    • Let the program run unhindered, reboot the PC when it is done
    • You will get a log that shows the results of the fix. Please post it.
    • Open OTL again and click the Quick Scan button. Post the log it produces in your next reply.
     
  7. noobkiller69

    noobkiller69 TS Rookie Topic Starter Posts: 17

    The web browser I use is Mozilla Firefox. I tried IE8 but the speed is the same, slow. I don't know the ISP advertised speed but this shouldn't make a different because on my netbook and my desktop computer the speed is normal. I did the speed test numerous time on my laptop but after every test the speed differ. The speed for download range from 13.68 Mb/s to 18.59 Mb/s. The upload speed range from 0.34 Mb/s to 0.49 Mb/s. The average download speed on my desktop computer and netbook is around 18 Mb/s but on my laptop it only 15 Mb/s.
     

    Attached Files:

  8. Broni

    Broni Malware Annihilator Posts: 47,082   +259

    This is a nice speed for broadband connection.
    In that case, you'll have define "slow internet" for me.

    =========================================================================

    Last scans....

    1. Download Security Check from HERE, and save it to your Desktop.
    • Double-click SecurityCheck.exe
    • Follow the onscreen instructions inside of the black box.
    • A Notepad document should open automatically called checkup.txt; please post the contents of that document.


    2. Download Temp File Cleaner (TFC)
    • Double click on TFC.exe to run the program.
    • Click on Start button to begin cleaning process.
    • TFC will close all running programs, and it may ask you to restart computer.


    3. Go to Kaspersky website and perform an online antivirus scan.

    • Disable your active antivirus program.
    • Read through the requirements and privacy statement and click on Accept button.
    • It will start downloading and installing the scanner and virus definitions. You will be prompted to install an application from Kaspersky. Click Run.
    • When the downloads have finished, click on Settings.
    • Make sure these boxes are checked (ticked). If they are not, please tick them and click on the Save button:
      • Spyware, Adware, Dialers, and other potentially dangerous programs
      • Archives
      • Mail databases
    • Click on My Computer under Scan.
    • Once the scan is complete, it will display the results. Click on View Scan Report.
    • You will see a list of infected items there. Click on Save Report As....
    • Save this report to a convenient place. Change the Files of type to Text file (.txt) before clicking on the Save button. Then post it here.
     
  9. noobkiller69

    noobkiller69 TS Rookie Topic Starter Posts: 17

    By slow internet, I mean that it take 2~3 minutes to load Google and any other web pages. Also the download speed has decreased alot since two weeks ago.
     

    Attached Files:

  10. Broni

    Broni Malware Annihilator Posts: 47,082   +259

    Which browser?

    ========================================================================

    Update Adobe Reader

    You can download it from http://www.adobe.com/products/acrobat/readstep2.html
    After installing the latest Adobe Reader, uninstall all previous versions.
    Note. If you already have Adobe Photoshop® Album Starter Edition installed or do not wish to have it installed UNcheck the box which says Also Download Adobe Photoshop® Album Starter Edition.

    Alternatively, you can uninstall Adobe Reader (33.5 MB), download and install Foxit PDF Reader(3.5MB) from HERE.
    It's a much smaller file to download and uses a lot less resources than Adobe Reader.
    Note: When installing FoxitReader, make sure to UN-check any pre-checked toolbar, or other garbage.

    =====================================================================

    OTL Clean-Up
    Clean up with OTL:

    * Double-click OTL.exe to start the program.
    * Close all other programs apart from OTL as this step will require a reboot
    * On the OTL main screen, press the CLEANUP button
    * Say Yes to the prompt and then allow the program to reboot your computer.

    If you still have any tools or logs leftover on your computer you can go ahead and delete those off of your computer now.

    ======================================================================

    Your computer is clean [​IMG]

    1. We need to reset system restore to prevent your computer from being accidentally reinfected by using some old restore point(s). We'll create fresh, clean restore point.

    Turn off System Restore:

    - Windows XP:
    1. Click Start.
    2. Right-click the My Computer icon, and then click Properties.
    3. Click the System Restore tab.
    4. Check "Turn off System Restore".
    5. Click Apply.
    6. When turning off System Restore, the existing restore points will be deleted. Click Yes to do this.
    7. Click OK.
    - Windows Vista and 7:
    1. Click Start.
    2. Right-click the Computer icon, and then click Properties.
    3. Click on System Protection under the Tasks column on the left side
    4. Click on Continue on the "User Account Control" window that pops up
    5. Under the System Protection tab, find Available Disks
    6. Uncheck the box for any drive you wish to disable system restore on (in most cases, drive "C:")
    7. When turning off System Restore, the existing restore points will be deleted. Click "Turn System Restore Off" on the popup window to do this.
    8. Click OK

    2. Restart computer.

    3. Turn System Restore on.

    4. Make sure, Windows Updates are current.

    5. If any Trojan was listed among your infection(s), make sure, you change all of your on-line important passwords (bank account(s), secured web sites, etc.) immediately!

    6. Download, and install WOT (Web OF Trust): http://www.mywot.com/. It'll warn you (in most cases) about dangerous web sites.

    7. Run Malwarebytes "Quick scan" once in a while to assure safety of your computer.

    8. Run Temporary File Cleaner (TFC) weekly.

    9. Download and install Secunia Personal Software Inspector (PSI): http://secunia.com/vulnerability_scanning/personal/. The Secunia PSI is a FREE security tool designed to detect vulnerable and out-dated programs and plug-ins which expose your PC to attacks. Run it weekly.

    10. (optional) If you want to keep all your programs up to date, download and install FileHippo Update Checker.
    The Update Checker will scan your computer for installed software, check the versions and then send this information to FileHippo.com to see if there are any newer releases.

    11. Run defrag at your convenience.

    12. Read How did I get infected?, With steps so it does not happen again!: http://www.bleepingcomputer.com/forums/topic2520.html

    13. Please, let me know, how your computer is doing.
     
  11. noobkiller69

    noobkiller69 TS Rookie Topic Starter Posts: 17

    The browser I use is Mozilla Firefox, but i also tried in IE8 but the speed is still slow. There is no point of setting a system restore because the speed is still slow.
     
     
  12. Broni

    Broni Malware Annihilator Posts: 47,082   +259

    Yes, there is a point, because your computer is free of malware now and restore points have to be reset.

    Please, complete all steps and when you're done, we'll try to solve your browsing issues.
     
  13. Broni

    Broni Malware Annihilator Posts: 47,082   +259

    The issue seems to be resolved.
     
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