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Ad-Aware Detects Win32Rootkit.Agent


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5 replies to this topic

#1 matthewjamesr

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Posted 05 April 2009 - 04:03 PM

Hello,

I am fixing a laptop, Windows XP Home SP3, for a friend. When I received it, the laptop was unusable. When I logged in, it would only sit at the desktop and do nothing. I tried opening the start menu and it would take 10-15 minutes for it to open. So, I restarted and opened it up in safe mode. It was actually responsive in safe mode. I ran scandisk on the C:\ drive and it repaired some bad sectors. After that, the computer seemed to be working fine. However, it had no security software installed and windows patches were way behind. So, I installed AVG free 8.5, Lavasoft Ad-Aware anniversary edition, and I ran all the windows updates. I ran AVG's full computer scan and it didn't find anything. However, Ad-aware detected Win32Rootkit.Agent. At first, I though that Ad-Aware and taken care of the problem, but later AVG had a license error and stopped working. Then, I looked into this rootkit and found out it may require a bit more than Ad-Aware quarantine. Ad-aware lists the following file as the malware detected: C:\WINDOWS\system32\$sys$upgtool.exe

If you need any more information to assist me, please let me know. I greatly appreciate any and all help I receive.

Thanks,
Matt

P.S. Hope that wasn't too much rambling, lol.

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#2 extremeboy

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Posted 05 April 2009 - 08:15 PM

Hello.

Please run MBAM first.

Download and run MalwareBytes Anti-Malware

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 Download_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 and you may be prompted to restart your computer. (see Note below)
  • 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 will be presented with 1 of 2 prompts. Click OK to either and let MBAM proceed with the disinfection process. If asked to restart the computer, please do so immediately. Failure to reboot will prevent MBAM from removing all the malware.

For complete or visual instructions on installing and running Malwarebytes Anti-Malware please read this link

With Regards,
Extremeboy
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#3 matthewjamesr

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Posted 06 April 2009 - 12:40 AM

Malwarebytes' Anti-Malware 1.35
Database version: 1943
Windows 5.1.2600 Service Pack 3

4/5/2009 10:09:28 PM
mbam-log-2009-04-05 (22-09-28).txt

Scan type: Quick Scan
Objects scanned: 112704
Time elapsed: 25 minute(s), 10 second(s)

Memory Processes Infected: 0
Memory Modules Infected: 0
Registry Keys Infected: 15
Registry Values Infected: 1
Registry Data Items Infected: 0
Folders Infected: 0
Files Infected: 1

Memory Processes Infected:
(No malicious items detected)

Memory Modules Infected:
(No malicious items detected)

Registry Keys Infected:
HKEY_CLASSES_ROOT\minibugtransporter.minibugtransporterx (Adware.Minibug) -> Quarantined and deleted successfully.
HKEY_CLASSES_ROOT\minibugtransporter.minibugtransporterx.1 (Adware.Minibug) -> Quarantined and deleted successfully.
HKEY_CLASSES_ROOT\popcaploader.popcaploaderctrl2 (Adware.PopCap) -> Quarantined and deleted successfully.
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\ModuleUsage\c:/windows/downloaded program files/popcaploader.dll (Adware.PopCap) -> Quarantined and deleted successfully.
HKEY_CLASSES_ROOT\TypeLib\{c9c5deaf-0a1f-4660-8279-9edfad6fefe1} (Adware.PopCap) -> Quarantined and deleted successfully.
HKEY_CLASSES_ROOT\Interface\{e4e3e0f8-cd30-4380-8ce9-b96904bdefca} (Adware.PopCap) -> Quarantined and deleted successfully.
HKEY_CLASSES_ROOT\Interface\{fe8a736f-4124-4d9c-b4b1-3b12381efabe} (Adware.PopCap) -> Quarantined and deleted successfully.
HKEY_CLASSES_ROOT\CLSID\{df780f87-ff2b-4df8-92d0-73db16a1543a} (Adware.PopCap) -> Quarantined and deleted successfully.
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Code Store Database\Distribution Units\{df780f87-ff2b-4df8-92d0-73db16a1543a} (Adware.PopCap) -> Quarantined and deleted successfully.
HKEY_CLASSES_ROOT\popcaploader.popcaploaderctrl2.1 (Adware.PopCap) -> Quarantined and deleted successfully.
HKEY_CLASSES_ROOT\Interface\{04a38f6b-006f-4247-ba4c-02a139d5531c} (Adware.Minibug) -> Quarantined and deleted successfully.
HKEY_CLASSES_ROOT\CLSID\{2b96d5cc-c5b5-49a5-a69d-cc0a30f9028c} (Adware.Minibug) -> Quarantined and deleted successfully.
HKEY_CLASSES_ROOT\Typelib\{3c2d2a1e-031f-4397-9614-87c932a848e0} (Adware.Minibug) -> Quarantined and deleted successfully.
HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Ext\Stats\{549b5ca7-4a86-11d7-a4df-000874180bb3} (Trojan.Agent) -> Quarantined and deleted successfully.
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{549b5ca7-4a86-11d7-a4df-000874180bb3} (Trojan.Agent) -> Quarantined and deleted successfully.

Registry Values Infected:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\SharedDLLs\C:\WINDOWS\Downloaded Program Files\popcaploader.dll (Adware.PopCap) -> Quarantined and deleted successfully.

Registry Data Items Infected:
(No malicious items detected)

Folders Infected:
(No malicious items detected)

Files Infected:
C:\WINDOWS\Downloaded Program Files\popcaploader.dll (Adware.PopCap) -> Quarantined and deleted successfully.

#4 extremeboy

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Posted 06 April 2009 - 03:14 PM

Hello.

It seems Ad-Aware removed it. I want to confirm something on that rootkit and see if it's active still.

Just FYI, this is a nasty infection, your computer may be compromised.

This allows hackers to remotely control your computer, steal critical system information and download and execute files.

I would counsel you to disconnect this PC from the Internet immediately. If you do any banking or other financial transactions on the PC or if it should contain any other sensitive information, please get to a known clean computer and change all passwords where applicable, and it would be wise to contact those same financial institutions to apprise them of your situation.

Though the trojan has been identified and can be killed, because of it's backdoor functionality, your PC is very likely compromised and there is no way to be sure your computer can ever again be trusted. Many experts in the security community believe that once infected with this type of trojan, the best course of action would be a reformat and reinstall of the OS.


Run GMER for me.

Download and Run Scan with GMER

We will use GMER to scan for rootkits.
  • Double-click on Gmer.exe to start the program.
  • Allow the gmer.sys driver to load if asked.
    If it detects rootkit activity, you will receive a prompt to run a full scan. Click Yes..
  • When it's done scanning, you may receive another notice. Click OK if prompted.
  • Click on Save ... to save the log on your desktop.
    Save the log as GMER.txt when you save it on your desktop.
  • Close Gmer and copy and paste the contents of GMER.txt in your next reply.
  • If you receive no notice, click on the Scan button near the bottom.
  • It will start scanning again like before.
  • When it is done, Click on Save ... to save the log on your desktop.
    Save the log as GMER.txt when you save it on your desktop.
  • Close Gmer and copy and paste the contents of GMER.txt in your next reply.If GMER doesn't work in Normal Mode try running it in Safe Mode
Note: Do Not run any program while GMER is running

Important!:Please do not select the Show all checkbox during the scan.

With Regards,
Extremeboy
Note: Please do not PM me asking for help, instead please post it in the correct forum requesting for help. Help requests via the PM system will be ignored.

If I'm helping you and I don't reply within 48 hours please feel free to send me a PM.

The help you receive here is always free but if you wish to show your appreciation, you may wish to Posted Image.

#5 matthewjamesr

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Posted 08 April 2009 - 10:47 AM

Hi extremeboy,

I just wanted to thank you again for your advice. As you have cautioned, I may never be able to trust this computer again. So, with that in mind, I have decided to reformat this thing. However, if you would like me to run anything on it for testing purposes, I will gladly do it. Just let me know if that is the case, otherwise I'll just wipe it.

Thanks,
Matt

#6 extremeboy

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Posted 08 April 2009 - 04:16 PM

Hello.

Nope, that should be fine. Good luck on the format! :thumbsup:

With Regards,
Extremeboy
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