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Possible BIOS virus, Userinit changed immediately after fresh install


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#1 Jeebus

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Posted 26 March 2011 - 03:54 PM

Hello, I've got an IBM T43p Thinkpad laptop that a friend gave me to try and fix, they've been having all sorts of virus problems with it and can't seem to shift it. I took a look and did a quick MalwareBytes scan which picked up about 100~ infections which I removed. Once I restarted I noticed AVG was still reporting viruses, and the machine was running very slow.

I checked Task Manager and noticed that there were at least four seperate instances of Firefox.exe running, and an instance of Excel.exe running even though MS Excel wasn't open anywhere. These instances even ran upon starting up in Safe Mode which started to worry me.

I checked Regedit and browsed to the Winlogon section, and checked the Userinit key. The value was set to "C:\Windows\system32\userinit.exe,,C:\Program Files\ejbatyvw\mpsmhyfn.exe". I tried booting up with a UBCD disc and deleting the registry key and removing the file from the hard drive, however upon rebooting the file was immediately recreated and added to the registry again.

I decided to back up the data on the computer and do a full reinstall of Windows XP, after checking on a seperate computer that the files weren't infected themselves, and that machine seems to be running fine after several restarts and such so I'm feeling fairly safe in that regard. I proceeded to fully format and reinstall on the Thinkpad, but after completing the installation it took only a few minutes before I noticed that several instances of iexplore.exe were running in Task Manager. I checked the registry and lo and behold the random userinit key had been added once more.

This leads me to beleive that there's a virus in the laptop's BIOS or something similarly unaffected by formatting the hard drive. I've already tried downloading and running the BIOS update for that model but the flash utility states "nothing needs done at this time, cancelling the operation".

I'm at my wit's end, and seriously concerned about what I can do now. Any help would be greatly appreciated.

Thanks for your time
-Gary

Edited by Jeebus, 26 March 2011 - 03:56 PM.


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#2 boopme

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Posted 26 March 2011 - 07:37 PM

Hello, the best way to be certain is to get a deeper look. Post these logs and have our Malware Removal Team see what you have there.
Please go here....
Preparation Guide ,do steps 6 - 9.

Create a DDS log and post it in the new topic explained in step 9,which is here Virus, Trojan, Spyware, and Malware Removal Logs and not in this topic,thanks.
If Gmer won't run,skip it and move on.
Let me know if that went well.
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#3 Jeebus

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Posted 27 March 2011 - 05:43 AM

Hello, I've posted the requested logs in the Logs forum.

The topic link is http://www.bleepingcomputer.com/forums/topic387394.html

Thanks for your time
-Gary

#4 hamluis

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Posted 27 March 2011 - 10:26 AM

Now that your log is properly 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 Malware Removal Team member, nor should you continue to ask for help elsewhere. Doing so can result in system changes which may not show it the logs you already posted. Further, any modifications you make on your own may cause confusion for the helper 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 Malware Removal Team should be the only members that you take advice from, until they have verified your log as clean.

Please be patient. It may take a while to get a response because the Malware Removal 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 make another reply until it has been responded to by a member of the Malware Removal 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 Malware Removal Team member is already assisting you and not open the thread to respond.

To avoid confusion, I am closing this topic.

Louis




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