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Trojan? - Unwanted & Persistent Bho & Appinit_dll

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#1 phillipl


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Posted 24 February 2007 - 01:56 AM

Dell Dimension 8400
Pentium 4 3.00 ghz
512mb Ram

Microsoft Windows XP
Version 2002
Service Pack 2

McAfee Anti-Virus 11.2
Build: 11.2.121
Engine Version: 5100.0194
DAT Version: 4969.0000
DAT File Created: 02/22/2007
Last Update: 02/22/2007

AVG Anti-Spyware v7.5.0.50 trial
2/23/07 update

I believe I have a trojan, evidenced by an unwanted and persistent Browser Helper Object (BHO) called urqolii.dll.

This dll (in \windows\system32 ), is also being loaded as an AppInit_DLL with process WINLOGON.EXE.

HijackThis is unable to "FIX" (remove registry key/value) or rather it is immediately recreated after FIX.

Similar result when trying to do the removal by hand w/regedit

In SafeMode AVG Anti-Spyware found traces of BACKDOOR.POISON.A (and DOWNLOADER.AGENT.AUV) and deleted those. Now, no longer finds them.

McAfee found traces of DOWNLOADER-XZ and Adware-Maxsearch) but could only partially delete those.

Unable to delete the dll (URQOLII.DLL) - in use by another process, presumably WINLOGON.EXE

Unable to start Recovery Console (not installed on hard drive and booting from XP CD doesn't recognize hard drive ?why?)

At one point, my IE6 Privacy settings had security level reset to minimum, and the allowed site WWW.ESCORCHER.COM added. I removed that site, and changed level back, but...

seeking assistance on this stubborn problem


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#2 quietman7


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Posted 24 February 2007 - 07:58 AM

Sounds like there is more malware on your system that is recreating the file.

Since you already have Hijackthis installed, create a fresh log and post it in the HijackThis Logs and Analysis 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. Please include the top portion of the HijackThis log that lists version information. An expert will analyze your log and reply with instructions advising you what to fix.

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 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.

If after 5 days you still have received no response, then post a link to your HJT log in the thread titled "Haven't Had A Reply In Five Days?".

After posting a log 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. Doing so can result in system changes which may not show it the log you already posted. Further, any modifications you make 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.
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