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What is jakccowt.sys ?


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#1 clairidge

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Posted 25 April 2010 - 06:34 PM

I have Windows Vista SP1 and in the last 1-2 weeks have recovered from the Vista Internet Security malware, or at least so it seems. I used Malwarebytes.

I have Avast anti-virus. During the Vista Internet Security infection it began warning me shortly after startup that there was a rootkit. Here is the error message:

A ROOTKIT WAS FOUND!
c:\windows\system32\drivers\jakccowt.sys
type: hidden services
malware name: Win32:Qandr [Rtk]

I Google'd the jakccowt.sys filename with no success, and also searched for it on BP, again with no luck. This file appears to be a driver. I see it load even when I booted in Safe Mode today.

I ran a Sophos Anti Rootkit scan today, which found the jakccowt.sys file, but did not identify it for deletion. I deleted it anyway (risky, I know). After I rebooted, I made my hidden files visible, and saw it was back again, with today's date as the "file modified date". Just this moment I noticed in Windows Explorer that "date modified" is updating the time it was modified with every minute passing. So it is constantly being modified??

My gut sense is that I need to be concerned but I am not sure what to do next.

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#2 quietman7

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Posted 26 April 2010 - 07:10 AM

Anytime you come across a suspicious file or one that you do not recognize and searching via Google yields no results, it more than likely is bad. In that case, submit it to Jotti's virusscan or VirusTotal. In the "File to upload & scan" box, browse to the location of the suspicious file and submit (upload) it for scanning/analysis.

If Sophos ARK was not able to remove the drive, then 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 log for further investigation.

Please read the pinned topic titled "Preparation Guide For Use Before Using Malware Removal Tools and Requesting Help". If you cannot complete a step, then skip it and continue with the next. In Step 7 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 in the Virus, Trojan, Spyware, and Malware Removal Logs forum, NOT here, for assistance by the Malware Response 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 Malware Response 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 Malware Response Team.

Please be patient. It may take a while to get a response because the Malware Response 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 posted your log and are waiting, please DO NOT "bump" your post or make another reply until it has been responded to by a member of the Malware Response 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 Response Team member is already assisting you and not open the thread to respond.
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