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Trojan Horse Rootkit-Agent.CW


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5 replies to this topic

#1 Hurl

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Posted 09 April 2009 - 12:44 PM

I am using AVG antivirus and I am getting a Virus warning pop-up every couple of minutes. It is Trojan Horse Rootkit-Agent.CW and is is in File C:\System Volume Information\_Restore(AFB200C1-EEFE-43A0-BD8C-00FF4A6AA075)\RP476\A0098924.sys. I tried to find the file on My Computer and delete it however access to the file is denied. What is this virus and how can I get rid of it?

Thanks, Hurl

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#2 DaChew

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Posted 09 April 2009 - 01:31 PM

Please download Malwarebytes Anti-Malware (v1.36) and save it to your desktop.
alternate download link 1
alternate download link 2
If you have a previous version of MBAM, remove it via Add/Remove Programs and download a fresh copy.
  • 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. Alternatively, you can update through MBAM's interface from a clean computer, copy the definitions (rules.ref) located in C:\Documents and Settings\All Users\Application Data\Malwarebytes\Malwarebytes' Anti-Malware from that system to a usb stick or CD and then copy it to the infected machine.
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. MBAM may "make changes to your registry" as part of its disinfection routine. If using other security programs that detect registry changes (ie Spybot's Teatimer), they may interfere or alert you after scanning with MBAM. Please temporarily disable such programs or permit them to allow the changes.

http://www.bleepingcomputer.com/forums/t/114351/how-to-temporarily-disable-your-anti-virus-firewall-and-anti-malware-programs/
Chewy

No. Try not. Do... or do not. There is no try.

#3 Hurl

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Posted 09 April 2009 - 06:05 PM

Here is the MBAM scan log...I will let you know if it works.

Thanks, Hurl


Malwarebytes' Anti-Malware 1.36
Database version: 1959
Windows 5.1.2600 Service Pack 3

4/9/2009 7:59:16 PM
mbam-log-2009-04-09 (19-59-16).txt

Scan type: Quick Scan
Objects scanned: 107233
Time elapsed: 26 minute(s), 49 second(s)

Memory Processes Infected: 0
Memory Modules Infected: 0
Registry Keys Infected: 20
Registry Values Infected: 0
Registry Data Items Infected: 0
Folders Infected: 2
Files Infected: 1

Memory Processes Infected:
(No malicious items detected)

Memory Modules Infected:
(No malicious items detected)

Registry Keys Infected:
HKEY_CLASSES_ROOT\main.bho (Trojan.BHO) -> Quarantined and deleted successfully.
HKEY_CLASSES_ROOT\main.bho.1 (Trojan.BHO) -> Quarantined and deleted successfully.
HKEY_CLASSES_ROOT\Interface\{986a8ac1-ab4d-4f41-9068-4b01c0197867} (Trojan.BHO) -> Quarantined and deleted successfully.
HKEY_CLASSES_ROOT\CLSID\{afd4ad01-58c1-47db-a404-fbe00a6c5486} (Trojan.BHO) -> Quarantined and deleted successfully.
HKEY_CLASSES_ROOT\Typelib\{8e3c68cd-f500-4a2a-8cb9-132bb38c3573} (Trojan.BHO) -> Quarantined and deleted successfully.
HKEY_CLASSES_ROOT\AppID\{a0e1054b-01ee-4d57-a059-4d99f339709f} (Trojan.BHO) -> Quarantined and deleted successfully.
HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Ext\Stats\{afd4ad01-58c1-47db-a404-fbe00a6c5486} (Trojan.BHO) -> Quarantined and deleted successfully.
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{afd4ad01-58c1-47db-a404-fbe00a6c5486} (Trojan.BHO) -> Quarantined and deleted successfully.
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\ksi32sk (Rootkit.Agent) -> Quarantined and deleted successfully.
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet003\Services\ksi32sk (Rootkit.Agent) -> Quarantined and deleted successfully.
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\ksi32sk (Rootkit.Agent) -> Quarantined and deleted successfully.
HKEY_CURRENT_USER\SOFTWARE\MediaHoldings (Adware.PlayMP3Z) -> Quarantined and deleted successfully.
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\crypt (Trojan.Downloader) -> Quarantined and deleted successfully.
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\acpi32 (Rootkit.Spamtool) -> Quarantined and deleted successfully.
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\i386si (Rootkit.Spamtool) -> Quarantined and deleted successfully.
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\systemntmi (Rootkit.Spamtool) -> Quarantined and deleted successfully.
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\ws2_32sik (Rootkit.Agent) -> Quarantined and deleted successfully.
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\nicsk32 (Rootkit.Agent) -> Quarantined and deleted successfully.
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\netsik (Rootkit.Agent) -> Quarantined and deleted successfully.
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\fips32cup (Rootkit.Agent) -> Quarantined and deleted successfully.

Registry Values Infected:
(No malicious items detected)

Registry Data Items Infected:
(No malicious items detected)

Folders Infected:
C:\Documents and Settings\Debbie\Application Data\RegistrySmart (Rogue.RegistrySmart) -> Quarantined and deleted successfully.
C:\Documents and Settings\Debbie\Application Data\RegistrySmart\Log (Rogue.RegistrySmart) -> Quarantined and deleted successfully.

Files Infected:
C:\WINDOWS\system32\drivers\ksi32sk.sys (Rootkit.Agent) -> Quarantined and deleted successfully.

#4 DaChew

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Posted 09 April 2009 - 08:36 PM

One or more of the identified infections is a rootkit/backdoor trojan.

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. Please read these for more information:

How Do I Handle Possible Identify Theft, Internet Fraud and CC Fraud?
When Should I Format, How Should I Reinstall

Someone may still be able to clean this machine but we can't guarantee that it will be 100% secure afterwards. Let me know what you decide to do.
Chewy

No. Try not. Do... or do not. There is no try.

#5 Hurl

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Posted 14 April 2009 - 09:18 PM

Chewy,

I took your advice and reformatted. I redid a scan after the format and here are the results....

Malwarebytes' Anti-Malware 1.36
Database version: 1983
Windows 5.1.2600 Service Pack 2

4/14/2009 11:15:26 PM
mbam-log-2009-04-14 (23-15-26).txt

Scan type: Quick Scan
Objects scanned: 58600
Time elapsed: 1 minute(s), 3 second(s)

Memory Processes Infected: 0
Memory Modules Infected: 0
Registry Keys Infected: 0
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:
(No malicious items detected)

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)

#6 DaChew

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Posted 14 April 2009 - 09:53 PM

You might go over this list so you won't have to reload again, or at least very soon

http://www.bleepingcomputer.com/forums/t/2520/how-did-i-get-infected/
Chewy

No. Try not. Do... or do not. There is no try.




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