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Returning Rootkit or False Positive


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3 replies to this topic

#1 mikem223

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Posted 18 January 2011 - 11:59 PM

About a week ago Firefox froze up and couldn't display any pages on the internet. I ran some programs and could not find anything until I ran combofix and it said it found rootkit activity and would reset the computer. After the computer reset it would do a complete scan and find nothing. Out of curiosity I ran the scan again and it found rootkit activity and after it reset it found nothing. Just to be safe I flashed the bios, put in the a windows sp3 bootdisk did a fixmbr, reformated the hard drive, and reinstalled windows. After getting everything back up and running I did a combofix scan and found nothing. I did nothing else to the system except allow windows update to run. The next day I did a combofix scan and it detected rootkit activity. I've gone through these steps several times now and keep getting the same thing. I've done scans with many different rootkit scanners and they found nothing until I tried rootrepeal and found this in part of the log:

Name: atapi.sys
Image Path: atapi.sys
Address: 0xB9F31000 Size: 96512 File Visible: - Signed: -
Status: -

Name: atapi.sys
Image Path: atapi.sys
Address: 0xB9F31000 Size: 96512 File Visible: - Signed: -
Status: Hidden from the Windows API!

So Combofix and Rootrepeal keep finding something, where no other malware scanners are. I scanned atapi.sys on the virustotal website and found nothing. My system is not really having any strange behavior anymore, but was just curious at to what is going on here.

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#2 cryptodan

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Posted 19 January 2011 - 12:01 AM

Please follow the instructions in ==>This Guide<==.

Once the proper logs are created, then make a NEW TOPIC and post it ==>HERE<== Please include the link to this topic in your new topic and a description of your computer issues and what you have done to resolve them.

If you can produce at least some of the logs, then please create the new topic and explain what happens when you try to create the log(s) that you couldn't get. If you cannot produce any of the logs, then still post the topic and explain that you followed the Prep. Guide, were unable to create the logs, and describe what happens when you try to create the logs.

Once you have created the new topic, please reply back here with a link to the new topic.

#3 mikem223

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Posted 19 January 2011 - 12:48 AM

topic moved to here:

http://www.bleepingcomputer.com/forums/topic374317.html

#4 Budapest

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Posted 19 January 2011 - 12:50 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 log 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 MR Team member is already assisting you and not open the thread to respond.

To avoid confusion, I am closing this topic.
The power of accurate observation is commonly called cynicism by those who haven't got it.

—George Bernard Shaw




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