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ntoskrnl-hook has taken over my pc


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#1 mrback

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Posted 13 September 2009 - 11:07 PM

1. Found ntoskrnl-hook with Mc Afee and supposedly removed it
2. Upon seeing that it keeps coming back, spent the entire day trying new approaches
3. Installed AVZ4, NVT, Combofix, ATF Cleaner , Dr.Web CureIt
4. Performed full scan, found additional malware
5. I don't get anymore the google search symptoms but when I boot in safe mode it appears clearly that the malware has created a new administrator that has taken over the computer.
6. I have all the latest AVZ and combofix logs available

So, now I am more than ready for some kind soul to guide me through how to recover usage of my beloved PC.
Thanks, and hope to hear from one of you guys/girls soon.
Andy

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#2 Budapest

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Posted 14 September 2009 - 01:35 AM

it appears clearly that the malware has created a new administrator that has taken over the computer

Can you please explain this comment a bit further. It is normal to see an Administrator account when booting into Safe Mode.

Edited by Budapest, 14 September 2009 - 01:35 AM.

The power of accurate observation is commonly called cynicism by those who haven't got it.

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#3 mrback

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Posted 14 September 2009 - 08:26 AM

When for instance I modify the start up applications with msconfig I end up with a prompt telling me that I am not the administrator of this computer and I should log in as an admin.
Also the administrator on safe mode is password protected and I have never used a password for my computer

#4 quietman7

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Posted 14 September 2009 - 08:31 AM

MSConfig (System Configuration Utility) is a troubleshooting utility used to diagnose and fix system configuration issues. In the Summary section Microsoft says "The System Configuration utility helps you find problems with your Windows XP configuration. It does not manage the programs that run when Windows starts."

Although it works as a basic startup manager, msconfig should not be used routinely to disable auto-start programs. It is a temporary solution and not a good practice for the following reasons:
  • When uninstalling programs while disabled with msconfig, they may not be uninstalled properly and manually editing the registry will be required to remove everything.
  • Msconfig will often leave orphaned entries when software is uninstalled. When used to switch back to normal startup mode, these orphan entries can result in boot up errors.
  • Msconfig only allows you to disable entries. To completely remove an entry from its' list you have to edit the registry, or use a third-party tool like Msconfig Cleanup Utility or a startup manager.
  • Msconfig allows malware related items to hide in your registry which you may not see or affect your computer until switched back to normal startup mode. This could then result in reinfection of the computer.
  • Msconfig does not list all applications loaded in all possible startup locations (some entry points are hidden and unknown to the user).
You should not use msconfig to disable startup applications related to services. Doing so alters the registry and there are services that are essential for hardware and booting your system. When you uncheck a service in msconfig, you completely disable it. If you uncheck the wrong one, you may not be able to restart your computer. You should only disable services using the Services Management Console (services.msc) where you cannot disable services that may be vital to boot your system.

Black Viper's warning: Why can't I use msconfig to change my services?

Some infections are difficult to remove completely because of their morphing characteristics which allows the malware to regenerate itself. Sometimes there is hidden piece of malware (i.e. rootkit) which has not been detected by your security tools that protects malicious files and registry keys so they cannot be permanently deleted. Disinfection will probably require the use of more powerful tools than we recommend in this forum. Before that can be done you will need you to create and post a DDS/HijackThis log for further investigation.

Please read the pinned topic titled "Preparation Guide For Use Before Posting A Hijackthis Log". If you cannot complete a step, then skip it and continue with the next. In Step 6 there are instructions for downloading and running DDS which will create a Pseudo HJT Report as part of its log.

When you have done that, post your log along with the one created by ComboFix in the HijackThis Logs and Malware Removal forum, NOT here, for assistance by the HJT Team Experts. A member of the Team will walk you through, step by step, on how to clean your computer. If you post your log back in this thread, the response from the HJT Team will be delayed because your post will have to be moved. This means it will fall in line behind any others posted that same day.

Start a new topic, give it a relevant title and post your log along with a brief description of your problem, a summary of any anti-malware tools you have used and a summary of any steps that you have performed on your own. An expert will analyze your log and reply with instructions advising you what to fix. After doing this, we would appreciate if you post a link to your log back here so we know that your getting help from the HJT Team.

Please be patient. It may take a while to get a response because the HJT Team members are very busy working logs posted before yours. They are volunteers who will help you out as soon as possible. Once you have made your post and are waiting, please DO NOT "bump" your post or make another reply until it has been responded to by a member of the HJT Team. Generally the staff checks the forum for postings that have 0 replies as this makes it easier for them to identify those who have not been helped. If you post another response there will be 1 reply. A team member, looking for a new log to work may assume another HJT Team member is already assisting you and not open the thread to respond.
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#5 mrback

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Posted 14 September 2009 - 11:44 PM

Thank you Quietman
Will run a Hijack this log

#6 quietman7

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Posted 15 September 2009 - 07:19 AM

Your DDS/HijackThis log is posted here.

Now that your log is posted, you should NOT make further changes to your computer (install/uninstall programs, use special fix tools, delete files, edit the registry, etc) unless advised by a HJT Team member, nor should you continue to ask for help elsewhere. Doing so can result in system changes which may not show it the log you already posted. Further, any modifications you make on your own may cause confusion for the member assisting you and could complicate the malware removal process which would extend the time it takes to clean your computer.

From this point on the HJT Team should be the only members that you take advice from, until they have verified your log as clean.

To avoid confusion, I am closing this topic until you are cleared by the HJT Team. If you still need assistance after your log has been reviewed and you have been cleared, please PM me or another moderator and we will re-open this topic.

Good luck with your log.
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