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Trojan And Virus Picked Up By Avg And Ad-aware


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#1 ragnarok91

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Posted 22 January 2008 - 07:48 PM

i was running my avg and ad-aware yesterday and they both picked something called WIN32/AUTORUN.BK and Trojan horse Generic9.AQBU. i deleted the WIN32/AUTORUN.BK virus and discovered i cannot access my online games. can some one tell me is WIN32/AUTORUN.BK a virus? and what should i do with the trojan horse?

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#2 Tomo2

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Posted 22 January 2008 - 08:09 PM

Win32/AUTORUN-BK is a trojan that can be dropped through malicious sites, online games or by other malware.
Aliases: TR/Autorun.BK [Avira], PWS-OnlineGames.a [McAfee]
When Worm.AutoRun.bk is executed, it performs the following activities:

It drops the below malicious files,

%Program Files%\Internet Explorer\msvcrt.bak [Copy of itself]
%Program Files%\Internet Explorer\msvcrt.dll
%Program Files%\Common Files\Relive.dll

For autoexecution it create the below registry entry

Default = "%Program Files%\Internet Explorer\msvcrt.dll"
HKCR\CLSID\{5C7596CB-C3CC-6BA3-BE52-8EEA63F9C61D}
\InProcServer32

Default = "%Program Files%\Common Files\Relive.dll"
HKCR\CLSID\{A1626E66-B26B-C628-A1DF-BDACCFA26EE1}
\InProcServer32
Default = "{6C7596CB-C1CC-6BA3-BE52-8EEA62F9C61D}"
HKLM\SOFTWARE\Classes\*\shellex\ContextMenuHandlers\ReliveHookDLL
It registers itself as a Browser Helper Object (BHO) to ensure its automatic execution every time Internet Explorer is run. It does this by creating the following registry key/entry,

Default = ""
HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{A1626E66-B26B-C628-A1DF-BDACCFA26EE1}

It deletes the following file,

%System%\drivers\etc\hosts

It drops copies of itself in all removable drives. It also drops an AUTORUN.INF file to automatically execute dropped copies when the drives are accessed.

The "msvcrt.dll" injects itself into various running processes on an affected system to make its detection and removal difficult.


Make sure your AV is up-to-date and scan again with them (in safe mode if necessary).
You need to clear your system restore folder to completely remove it. Go to Start -> Control Panel -> Performance and Maintenance -> Double-click €œSystem€ -> System Restore tab. Select the "Turn off System Restore" on all drives box. Click Apply. Restart your system and turn system restore on only when you know your system is clean of viruses.
I would never wait when I have a virus on my computer (but thats just my opinion). Delete all viruses as they are detected.
To replace your HOSTS files that was deleted please download the MVPS HOSTS file.

Hope that helps!

Edited by Tomo2, 22 January 2008 - 08:12 PM.

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#3 ragnarok91

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Posted 22 January 2008 - 08:57 PM

i got another question. after i deleted the virus my computer has been running exceptionally slow. slower then before when i have the virus. i also reinstalled my online games and always getting disconnected. this is a shared computer and i really hope to fix it.

#4 quietman7

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Posted 22 January 2008 - 09:22 PM

Download and scan with Dr.Web CureIt. Follow the instructions here for performing a scan in "safe mode".

Please download ATF Cleaner by Atribune & save it to your desktop. DO NOT use yet.
Please download and install SUPERAntiSpyware Free
  • Double-click SUPERAntiSypware.exe and use the default settings for installation.
  • An icon will be created on your desktop. Double-click that icon to launch the program.
  • If asked to update the program definitions, click "Yes". If not, update the definitions before scanning by selecting "Check for Updates". (If you encounter any problems while downloading the updates, manually download them from here and unzip into the program's folder.)
  • Under the "Configuration and Preferences", click the Preferences... button.
  • Click the "General and Startup" tab, and under Start-up Options, make sure "Start SUPERAntiSpyware when Windows starts" box is unchecked.
  • Click the "Scanning Control" tab, and under Scanner Options, make sure the following are checked (leave all others unchecked):
    • Close browsers before scanning.
    • Scan for tracking cookies.
    • Terminate memory threats before quarantining.
  • Click the "Close" button to leave the control center screen and exit the program.
  • Do not run a scan just yet.
Reboot your computer in "Safe Mode" using the F8 method. To do this, restart your computer and after hearing your computer beep once during startup (but before the Windows icon appears) press the F8 key repeatedly. A menu will appear with several options. Use the arrow keys to navigate and select the option to run Windows in "Safe Mode".

Double-click ATF-Cleaner.exe to run the program.
  • Under Main "Select Files to Delete" 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.
    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.
    If you would like to keep your saved passwords, please click No at the prompt.
  • Click Exit on the Main menu to close the program.
Note: On Vista, "Windows Temp" is disabled. To empty "Windows Temp" ATF-Cleaner must be "Run as an Administrator".

Scan with SUPERAntiSpyware as follows:
  • Launch the program and back on the main screen, under "Scan for Harmful Software" click Scan your computer.
  • On the left, make sure you check C:\Fixed Drive.
  • On the right, under "Complete Scan", choose Perform Complete Scan and click "Next".
  • After the scan is complete, a Scan Summary box will appear with potentially harmful items that were detected. Click "OK".
  • Make sure everything has a checkmark next to it and click "Next".
  • A notification will appear that "Quarantine and Removal is Complete". Click "OK" and then click the "Finish" button to return to the main menu.
  • If asked if you want to reboot, click "Yes" and reboot normally.
  • To retrieve the removal information after reboot, launch SUPERAntispyware again.
    • Click Preferences, then click the Statistics/Logs tab.
    • Under Scanner Logs, double-click SUPERAntiSpyware Scan Log.
    • If there are several logs, click the current dated log and press View log. A text file will open in your default text editor.
    • Please copy and paste the Scan Log results in your next reply.
  • Click Close to exit the program.

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#5 ragnarok91

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Posted 22 January 2008 - 09:31 PM

The last step for running superantispyware is in safe mode?

#6 quietman7

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Posted 22 January 2008 - 09:34 PM

ATFCleaner and SAS should both be run in safe mode.
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#7 ragnarok91

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Posted 22 January 2008 - 09:35 PM

ok. thanks alot quietman7. =)




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