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Rootkit Infection (Continued)


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4 replies to this topic

#1 choatc

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Posted 14 October 2009 - 10:51 PM

I have a computer with a serious rootkit infection. I have previously worked with one of your moderators at the following post, and have been referred to this forum for further assistance:

http://www.bleepingcomputer.com/forums/t/263558/rootkit-infection/

I am attaching my Win32kDiag.txt file - it was too big to post in this post as text. I had to zip it up since it was too big to upload as well.

I also used peek.bat, and obtained the following information:

Volume in drive C has no label.
Volume Serial Number is 0890-BF50

Directory of C:\WINDOWS\SoftwareDistribution\Download\555558d2c7916b118ad5baef62b18136\sp2qfe

02/06/2009 01:46 PM 408,064 netlogon.dll
1 File(s) 408,064 bytes

Directory of C:\WINDOWS\system32

08/04/2004 06:00 AM 180,224 scecli.dll

Directory of C:\WINDOWS\system32

08/04/2004 06:00 AM 407,040 netlogon.dll

Directory of C:\WINDOWS\system32

08/04/2004 06:00 AM 61,952 eventlog.dll
3 File(s) 649,216 bytes

Directory of C:\WINDOWS\system32\dllcache

08/04/2004 06:00 AM 180,224 scecli.dll

Directory of C:\WINDOWS\system32\dllcache

08/04/2004 06:00 AM 407,040 netlogon.dll

Directory of C:\WINDOWS\system32\dllcache

08/04/2004 06:00 AM 55,808 eventlog.dll
3 File(s) 643,072 bytes

Total Files Listed:
7 File(s) 1,700,352 bytes
0 Dir(s) 61,843,226,624 bytes free

I attempted to run DDS.scr without success. The cmd window opens briefly, but closes quickly and does not create open Notepad or the text files. The virus is very intuitive, and has the ability to detect anti-virus tools and disable them. It even corrupted svchost.exe, and I had to recover that file by copying it from another computer using taskmgr and cmd to navigate.

Also have attempted to run RootRepeal.exe. It runs for a period of time, but some point during the file scan it simply shuts down and the "exe" file then becomes corrupted. The previous moderator indicated that I should post the files I've collected so far, and then look to your assistance for guidance on how to proceed.

Thanks for the help!

Attached Files



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#2 schrauber

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Posted 27 October 2009 - 03:18 PM

Hello and welcome to Bleeping Computer

We apologize for the delay in responding to your request for help. Here at Bleeping Computer we get overwhelmed at times, and we are trying our best to keep up. Please note that your topic was not intentionally overlooked. Our mission is to help everyone in need, but sometimes it takes just a little longer to get to every request for help. No one is ignored here.

If you have since resolved the original problem you were having, we would appreciate you letting us know. If not please perform the following steps below so we can have a look at the current condition of your machine.

If you have not done so, include a clear description of the problems you're having, along with any steps you may have performed so far.

Upon completing the steps below another staff member will review and take the steps necessary with you to get your machine back in working order clean and free of malware.

If you have already posted a DDS log, please do so again, as your situation may have changed.
Use the 'Add Reply' and add the new log to this thread.


Thanks and again sorry for the delay.

We need to see some information about what is happening in your machine. Please perform the following scan:
  • Download DDS by sUBs from one of the following links. Save it to your desktop.
  • Double click on the DDS icon, allow it to run.
  • A small box will open, with an explaination about the tool. No input is needed, the scan is running.
  • Notepad will open with the results.
  • Follow the instructions that pop up for posting the results.
  • Close the program window, and delete the program from your desktop.
Please note: You may have to disable any script protection running if the scan fails to run. After downloading the tool, disconnect from the internet and disable all antivirus protection. Run the scan, enable your A/V and reconnect to the internet.

Information on A/V control HERE
regards,
schrauber

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If I've not posted back within 48 hrs., feel free to send a PM with your topic link. Thank you!

If I have helped you then please consider donating to continue the fight against malware Posted Image

#3 choatc

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Posted 27 October 2009 - 06:47 PM

Hello,

I am continuing to monitor the topic daily, and my problem is still not fixed. In fact, the computer has been off most of the time since I was instructed to open this topic under the HijackThis forum. I didn't want to taint the data by continuing to mess around with the system, so not much has changed.

I believe the problem I am having is some type of rootkit infection. It has really trashed the machine, and has attacked both the O/S and any A/V products that have loaded on the machine. This usually happens during a file scan. I think there is some type of process that detects the scan, it kills the A/V, and then it corrupts the A/V's executable. I have also had it corrupt the windows update service, IE7 and svchost.exe. When svchost.exe was corrupted, I had virtually no desktop. I went to another machine, found the same version of svchost.exe and then using taskmgr and the cmd line interface was able to delete the corrupted file and then replaced it with the good version that I had written to a CD. The desktop was restored.

So, no A/V is running right now and windows firewall is disabled. I attempted to run DSS.scr and DSS.pif. The message comes up that it is running, but notepad never opens and I never see a log file. What information I was able to obtain through peek.bat was included in my first post. I also attached a Win32kdiag.txt file that I was able to obtain. It was fairly sizable, and so I zipped it up and uploaded.

Before I started posting to your site, I attempted to use PC Tools Spyware Doctor. Unlike other programs it seemed to operate and never became corrupted. It said I had a rootkit infection but couldn't seem to kill it. At one point early in the process, it had me reboot the machine. I thought it was odd that at the beginning of the reset, I saw some text (very quickly) in the top left corner of the screen that referred to skynet. It was a one line phrase, and it came up before the Windows logo. I have not seen this since, but unusual behavior continues. I was able to get the windows update service running again, but service pack 3 will not load. It fails during the install process. That was an example of the odd stuff. Not long after that is when svchost.exe became corrupted. I have also had problems with IE and FireFox searches. If you put references to virus and other such text in the search strings, it will sometimes redirect the browser to other sites - some type of browser highjacking exploit.

The previous moderator said that the new person could help me try to get DSS.scr running. I am not sure what to do at this point, but I really would like to beat this bug! Let me know what I should do next. I will not do anything on the unit so that things stay as constant as possible.

choatc

#4 schrauber

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Posted 28 October 2009 - 01:02 PM

Hello, choatc and again
Welcome to the Bleeping Computer Forums. My name is Thomas (Tom is fine), and I will be helping you fixing your problems.

If you do not make a reply in 5 days, we will have to close your topic.

You may want to keep the link to this topic in your favourites. Alternatively, you can click the Posted Image button at the top bar of this topic and Track this Topic. The topics you are tracking can be found here.

Please take note of some guidelines for this fix:
  • Refrain from making any changes to your computer including installing/uninstall programs, deleting files, modifying the registry, and running scanners or tools. Doing so could cause changes to the directions I have to give you and prolong the time required. Further more, you should not be taking any advice relating to this computer from any other source throughout the course of this fix.
  • If you do not understand any step(s) provided, please do not hesitate to ask before continuing. I would much rather clarify instructions or explain them differently than have something important broken.
  • Even if things appear to be better, it might not mean we are finished. Please continue to follow my instructions and reply back until I give you the "all clean". We do not want to clean you part-way, only to have the system re-infect itself.
  • Please reply using the Posted Image button in the lower right hand corner of your screen. Do not start a new topic. The logs that you post should be pasted directly into the reply. Only attach them if requested or if they do not fit into the post.
  • Old topics are closed after 3 days with no reply, and working topics are closed after 5 days. If for any reason you cannot complete instructions within that time, that's fine, just post back here so that we know you're still here.
  • Please set your system to show all files.
    Click Start, open My Computer, select the Tools menu and click Folder Options.
    Select the View Tab. Under the Hidden files and folders heading, select Show hidden files and folders.
    Uncheck: Hide file extensions for known file types
    Uncheck the Hide protected operating system files (recommended) option.
    Click Yes to confirm.





One or more of the identified infections is a 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

We can still clean this machine but I can't guarantee that it will be 100% secure afterwards.








Please go here and have a look how you can disable your security software.

Download Combofix from any of the links below but rename it to before saving it to your desktop.

Link 1
Link 2



--------------------------------------------------------------------

Double click on the renamed Combofix.exe & follow the prompts.
  • When finished, it will produce a report for you.
  • As part of it's process, ComboFix will check to see if the Microsoft Windows Recovery Console is installed. With malware infections being as they are today, it's strongly recommended to have this pre-installed on your machine before doing any malware removal. It will allow you to boot up into a special recovery/repair mode that will allow us to more easily help you should your computer have a problem after an attempted removal of malware.
  • Follow the prompts to allow ComboFix to download and install the Microsoft Windows Recovery Console, and when prompted, agree to the End-User License Agreement to install the Microsoft Windows Recovery Console.
**Please note: If the Microsoft Windows Recovery Console is already installed, ComboFix will continue it's malware removal procedures.

Posted Image


Once the Microsoft Windows Recovery Console is installed using ComboFix, you should see the following message:

Posted Image


Click on Yes, to continue scanning for malware.

When finished, it will produce a log for you. Please include the C:\ComboFix.txt in your next reply.

This tool is not a toy and not for everyday use.
ComboFix SHOULD NOT be used unless requested by a forum helper


If you need help, see this link:
http://www.bleepingcomputer.com/combofix/how-to-use-combofix
regards,
schrauber

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Posted Image

If I've not posted back within 48 hrs., feel free to send a PM with your topic link. Thank you!

If I have helped you then please consider donating to continue the fight against malware Posted Image

#5 schrauber

schrauber

    Mr.Mechanic


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Posted 02 November 2009 - 05:16 PM

Due to the lack of feedback, this topic is now closed.
If you need this topic reopened, please PM a staff member and we will reopen it for you (include the address of this thread in your request). This applies to the original topic starter only. Everyone else with similar problems, please start a new topic.
regards,
schrauber

Posted Image
Posted Image

If I've not posted back within 48 hrs., feel free to send a PM with your topic link. Thank you!

If I have helped you then please consider donating to continue the fight against malware Posted Image




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