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System infected, regular tools ineffective?


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#1 Norm@Home

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Posted 20 November 2014 - 12:04 AM

I'm trying to help out a friend with his computer, the system runs Windows 7. The symptoms are that soon after the system starts what appears to be a second copy of "explorer.exe" located in the C:\Windows directory starts; when that happens the second copy starts using any unused cpu time pegging the cpu at close to 99%; there is extreme hard drive thrashing; memory usage climbs quickly to close to 99%. The system is almost unusable in this state and even in safe mode the same thing happens but slower.

 

I first tried removing the hard drive and attaching it to one of my own computers via hard drive dock and doing an in-depth scan with ESet Endpoint anti-virus 5.0.2237.0; it found and removed 14 virus infected files; I then put it back in the computer and started it up; I was able to run AdwCleaner and it found and removed some things; I tried running Junkware Removal Tool but it appears to have been terminated before it could finish; also it appears that Process Explorer would run for a while but then be terminated; I tried running MBar and it found and removed 2 threats; however on a reboot and rerun of MBar it finds the same two problems and is apparently unable to remove them. The Mbar logs are below.

 

Does anyone have any idea's of another way to attack this problem?

 

- Norm

 

Malwarebytes Anti-Rootkit BETA 1.07.0.1012
www.malwarebytes.org

Database version: v2014.11.20.01

Windows 7 Service Pack 1 x64 NTFS
Internet Explorer 10.0.9200.17148
Bill :: I5-660 [administrator]

11/19/2014 10:42:57 PM
mbar-log-2014-11-19 (22-42-57).txt

Scan type: Quick scan
Scan options enabled: Anti-Rootkit | Drivers | MBR | Physical Sectors | Memory | Startup | Registry | File System | Heuristics/Extra | Heuristics/Shuriken
Scan options disabled:
Kernel memory modifications detected. Deep Anti-Rootkit Scan engaged.
Objects scanned: 388183
Time elapsed: 9 minute(s), 35 second(s)

Memory Processes Detected: 0
(No malicious items detected)

Memory Modules Detected: 0
(No malicious items detected)

Registry Keys Detected: 0
(No malicious items detected)

Registry Values Detected: 0
(No malicious items detected)

Registry Data Items Detected: 0
(No malicious items detected)

Folders Detected: 0
(No malicious items detected)

Files Detected: 0
(No malicious items detected)

Physical Sectors Detected: 2
Physical Sector #1 on Drive #0 (Forged physical sector) -> Replace on reboot. [979356b25e00d884577cdce4f739767b]
Physical Sector #211 on Drive #0 (Forged physical sector) -> Replace on reboot. [979356b25e00d884577cdce4f739767b]

(end)
 



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#2 Broni

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Posted 20 November 2014 - 06:24 PM

Your issue will require elevated help.

 

Please follow the instructions in THIS GUIDE starting at Step 6. If you cannot complete a step, skip it and continue.

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

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.

It would be helpful if you post a note here once you have completed the steps in the guide and have started your topic in malware removal. Good luck and be patient.

If HelpBot replies to your topic, PLEASE follow Step One so it will report your topic to the team members.


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#3 Norm@Home

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Posted 22 November 2014 - 08:57 AM

I tried TDSKiller and it was able to remove the rootkit unlike MBAR and all other tools now work; the system is back to working normally.



#4 Broni

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Posted 22 November 2014 - 09:18 PM

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