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Trojan horse PSW.agent.abku virus


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9 replies to this topic

#1 swet

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Posted 22 July 2009 - 09:25 PM

Hi Rigel,
I am having the same Trojan horse PSW.agent.abku virus. I follwed your advise of using Dr Web Cureit in SAFE MODE, however the problem still persists. Here is what I got from Drweb.csv file. Please go though it and help me with you advise.
Thanks a lot for you help
swetansu

wrconsumerservice.exe;c:\program files\webroot\spy sweeper;Probably DLOADER.Trojan;Incurable.Moved.;
AIM.exe\data090;C:\AOL Instant Messenger\AIM.exe;Adware.Aws;;
AIM.exe;C:\AOL Instant Messenger;Archive contains infected objects;Moved.;
GTDownDE_87.ocx;C:\I386;Adware.Gdown;Incurable.Moved.;
aolcinst.exe\core.cab\GTDOWNAO_106.ocx;C:\Program Files\Common Files\aolback\Comps\coach\aolcinst.exe;Adware.Gdown;;
aolcinst.exe;C:\Program Files\Common Files\aolback\Comps\coach;Archive contains infected objects;Moved.;
A0036727.exe\data090;C:\System Volume Information\_restore{202550A8-7A33-4BCA-9586-051D24DDBF8F}\RP199\A0036727.exe;Adware.Aws;;
A0036727.exe;C:\System Volume Information\_restore{202550A8-7A33-4BCA-9586-051D24DDBF8F}\RP199;Archive contains infected objects;Moved.;
A0036728.exe\core.cab\GTDOWNAO_106.ocx;C:\System Volume Information\_restore{202550A8-7A33-4BCA-9586-051D24DDBF8F}\RP199\A0036728.exe;Adware.Gdown;;
A0036728.exe;C:\System Volume Information\_restore{202550A8-7A33-4BCA-9586-051D24DDBF8F}\RP199;Archive contains infected objects;Moved.;

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#2 rigel

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Posted 23 July 2009 - 02:31 PM

Hi swet - I am separating your topic so we can work independently

"In a world where you can be anything, be yourself." ~ unknown

"Fall in love with someone who deserves your heart. Not someone who plays with it. Will Smith


#3 rigel

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Posted 23 July 2009 - 02:33 PM

Please run malwarebytes

The process of cleaning your computer may require temporarily disabliling some security programs. If you are using SpyBot Search and Destroy, please refer to Note 2 at the bottom of this page.

Please download Malwarebytes Anti-Malware and save it to your desktop.
alternate download link 1
alternate download link 2
  • Make sure you are connected to the Internet.
  • Double-click on mbam-setup.exe to install the application.
  • When the installation begins, follow the prompts and do not make any changes to default settings.
  • When installation has finished, make sure you leave both of these checked:
    • Update Malwarebytes' Anti-Malware
    • Launch Malwarebytes' Anti-Malware
  • Then click Finish.
MBAM will automatically start and you will be asked to update the program before performing a scan.
  • If an update is found, the program will automatically update itself.
  • Press the OK button to close that box and continue.
  • If you encounter any problems while downloading the updates, manually download them from here and just double-click on mbam-rules.exe to install.
On the Scanner tab:
  • Make sure the "Perform Quick Scan" option is selected.
  • Then click on the Scan button.
  • If asked to select the drives to scan, leave all the drives selected and click on the Start Scan button.
  • The scan will begin and "Scan in progress" will show at the top. It may take some time to complete so please be patient.
  • When the scan is finished, a message box will say "The scan completed successfully. Click 'Show Results' to display all objects found".
  • Click OK to close the message box and continue with the removal process.
Back at the main Scanner screen:
  • Click on the Show Results button to see a list of any malware that was found.
  • Make sure that everything is checked, and click Remove Selected.
  • When removal is completed, a log report will open in Notepad.
  • The log is automatically saved and can be viewed by clicking the Logs tab in MBAM.
  • Copy and paste the contents of that report in your next reply and exit MBAM.
Note:
-- If MBAM encounters a file that is difficult to remove, you may be asked to reboot your computer so it can proceed with the disinfection process. Regardless if prompted to restart the computer or not, please do so immediately. Failure to reboot normally (not into safe mode) will prevent MBAM from removing all the malware.

Note 2:
-- MBAM may make changes to your registry as part of its disinfection routine. If you're using other security programs that detect registry changes (like Spybot's Teatimer), they may interfere with the fix or alert you after scanning with MBAM. Please disable such programs until disinfection is complete or permit them to allow the changes. To disable these programs, please view this topic: How To Temporarily Disable Your Anti-virus, Firewall And Anti-malware Programs

"In a world where you can be anything, be yourself." ~ unknown

"Fall in love with someone who deserves your heart. Not someone who plays with it. Will Smith


#4 Cubbie3798

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Posted 24 July 2009 - 12:07 AM

Hi! I have had the same problem.

After AVG ran yesterday, it found the psw.agent.abku virus in the winlogon.exe file. After unsuccessfully trying numerous programs to remove it, I found something that worked. My dad and I have the same computer, so I copied his clean winlogon.exe file to a thumb drive and renamed it 'winlogon.new.exe.' I then copied it into my Windows>System32 folder (where the infected file was located). I rebooted the computer in Safe Mode and chose the "Command Prompts" option. Once in DOS, I changed the directory to System32. I then renamed the infected file to 'winlogon.old.exe' and renamed the clean file to 'winlogon.exe'. Because the winlogon file is used all the time while Windows is operating, the only way to change the name is through the DOS commands. I rebooted the computer and verified that the old winlogon file still had the infection (had to make sure it didn't move elsewhere), and deleted that file. I then ran a full system scan, and I am now virus free! You should be able to do this same thing as long as the clean file is coming from a computer running the same operating system and service pack.

Good luck!

#5 realitybytez

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Posted 26 July 2009 - 02:20 PM

Hi! I have had the same problem.

After AVG ran yesterday, it found the psw.agent.abku virus in the winlogon.exe file. After unsuccessfully trying numerous programs to remove it, I found something that worked. My dad and I have the same computer, so I copied his clean winlogon.exe file to a thumb drive and renamed it 'winlogon.new.exe.' I then copied it into my Windows>System32 folder (where the infected file was located). I rebooted the computer in Safe Mode and chose the "Command Prompts" option. Once in DOS, I changed the directory to System32. I then renamed the infected file to 'winlogon.old.exe' and renamed the clean file to 'winlogon.exe'. Because the winlogon file is used all the time while Windows is operating, the only way to change the name is through the DOS commands. I rebooted the computer and verified that the old winlogon file still had the infection (had to make sure it didn't move elsewhere), and deleted that file. I then ran a full system scan, and I am now virus free! You should be able to do this same thing as long as the clean file is coming from a computer running the same operating system and service pack.

Good luck!

This is not good advice. Just because you fixed winlogon.exe does not remove the rootkit.

#6 rigel

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Posted 26 July 2009 - 03:37 PM

This is not good advice. Just because you fixed winlogon.exe does not remove the rootkit.


I agree. Todays infections require a series of scans and checks.

"In a world where you can be anything, be yourself." ~ unknown

"Fall in love with someone who deserves your heart. Not someone who plays with it. Will Smith


#7 swet

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Posted 26 July 2009 - 10:30 PM

Hi Rigel,
I have scanned the PC with Webroot spysweeper, pc tools, trojan remover, spywaree fighter, Dr.Web CureIt and AVG. no body dectes this virus except AVG however AVG is clearly unable to remove it. Just now there was some problem with my AVG Scan so I am not getting the repeated AVG sheld warning showing me that the winlogon.exe file is infected with Trojan horse.PSW.Agent .ABKU virus.
Thanks a lot for your help.

Here is the contents of MBAM quick scanm results.

Malwarebytes' Anti-Malware 1.39
Database version: 2508
Windows 5.1.2600 Service Pack 2

7/26/2009 10:24:27 PM
mbam-log-2009-07-26 (22-24-27).txt

Scan type: Quick Scan
Objects scanned: 113790
Time elapsed: 13 minute(s), 10 second(s)

Memory Processes Infected: 0
Memory Modules Infected: 0
Registry Keys Infected: 1
Registry Values Infected: 0
Registry Data Items Infected: 0
Folders Infected: 0
Files Infected: 0

Memory Processes Infected:
(No malicious items detected)

Memory Modules Infected:
(No malicious items detected)

Registry Keys Infected:
HKEY_LOCAL_MACHINE\System\CurrentControlSet\Enum\Root\legacy_windev-57f4-f6c (Rootkit.Agent) -> Quarantined and deleted successfully.

Registry Values Infected:
(No malicious items detected)

Registry Data Items Infected:
(No malicious items detected)

Folders Infected:
(No malicious items detected)

Files Infected:
(No malicious items detected)

#8 rigel

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Posted 27 July 2009 - 06:30 AM

I understand, but Malwarebytes is a good first in tool.

Please download Sophos Anti-rootkit & save it to your desktop.
alternate download link
Note: If using the vendor's download site you will be asked to register with MySophos so an email containing an activation link can be sent to your email address.

Be sure to print out and read the Sophos Anti-Rookit User Manual and Release Notes.
  • Double-click sar_15_sfx.exe to begin the installation, read the license agreement and click Accept.
  • Allow the default location of C:\Program Files\Sophos\Sophos Anti-Rootkit and click Install.
  • A message will appear "Sophos Anti-Rootkit was successfully installed. Click 'yes' to start it now". Click Yes.
  • Make sure the following are checked:
    • Running processes
    • Windows Registry
    • Local Hard Drives
  • Click Start scan.
  • Sophos Anti-Rootkit will scan the selected areas and display any suspicious files in the upper panel.
  • When the scan is complete, a pop-up screen will appear with "Rootkit Scan Results". Click OK to continue.
  • Click on the suspicious file to display more information about it in the lower panel which also includes whether the item is recommended for removal.
    • Files tagged as Removable: No are not marked for removal and cannot be removed.
    • Files tagged as Removable: Yes (clean up recommended) are marked for removal by default.
    • Files tagged as Removable: Yes (but clean up not recommended) are not marked for removal because Sophos did not recognize them. These files will require further investigation.
  • Select only items recommended for removal, then click "Clean up checked items". You will be asked to confirm, click Yes.
  • A pop up window will appear advising the cleanup will finish when you restart your computer. Click Restart Now.
  • After reboot, a dialog box displays the files you selected for removal and the action taken.
  • Click Empty list and then click Continue to re-scan your computer a second time to ensure everything was cleaned.
  • When done, go to Start > Run and type or copy/paste: %temp%\sarscan.log
  • This should open the log from the rootkit scan. Please post this log in your next reply. If you have a problem, you can find sarscan.log in C:\Documents and Settings\\Local Settings\Temp\.
Before performing an ARK scan it is recommended to do the following to ensure more accurate results and avoid common issues that may cause false detections.
  • Disconnect from the Internet or physically unplug you Internet cable connection.
  • Clean out your temporary files.
  • Close all open programs, scheduling/updating tasks and background processes that might activate during the scan including the screensaver.
  • Temporarily disable your anti-virus and real-time anti-spyware protection.
  • After starting the scan, do not use the computer until the scan has completed.
  • When finished, re-enable your anti-virus/anti-malware (or reboot) and then you can reconnect to the Internet.

"In a world where you can be anything, be yourself." ~ unknown

"Fall in love with someone who deserves your heart. Not someone who plays with it. Will Smith


#9 swet

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Posted 01 August 2009 - 02:52 PM

Hi Rigel, Here is the anti rootkit scan results...I am continuing with the same problem...


Sophos Anti-Rootkit Version 1.5.0 © 2009 Sophos Plc
Started logging on 7/28/2009 at 23:48:00 PM
User "Swet" on computer "SWETANSU"
Windows version 5.1 SP 2.0 Service Pack 2 build 2600 SM=0x300 PT=0x1 Win32
Info: Starting process scan.
Info: Starting registry scan.
Info: Starting disk scan of C: (NTFS).
Stopped logging on 7/28/2009 at 23:49:29 PM


Sophos Anti-Rootkit Version 1.5.0 © 2009 Sophos Plc
Started logging on 7/28/2009 at 23:56:34 PM
User "Swet" on computer "SWETANSU"
Windows version 5.1 SP 2.0 Service Pack 2 build 2600 SM=0x300 PT=0x1 Win32
Info: Starting process scan.
Info: Starting registry scan.
Info: Starting disk scan of C: (NTFS).
Hidden: file C:\WINDOWS\SYSTEM32\SsiEfr.exe
Hidden: file C:\WINDOWS\SYSTEM32\wrLZMA.dll
Stopped logging on 7/29/2009 at 0:27:16 AM

#10 rigel

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Posted 02 August 2009 - 05:59 PM

That scan is clear. It is possible you removed the rootkit, but there are still registry entries there.

Lets see if anything is left out there.

Please download ATF Cleaner by Atribune & save it to your desktop.
alternate download link 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.

"In a world where you can be anything, be yourself." ~ unknown

"Fall in love with someone who deserves your heart. Not someone who plays with it. Will Smith





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