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Sister-in-law's Infested Computer


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#1 Bako-Dan

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Posted 12 May 2010 - 04:07 PM

I'm trying to clean my Sister-in-law's computer. She's running Windows XP SP3. After having no luck installing MBAM, even after running rkill, I was finally able to install MBAM and run a scan while running in Safe Mode. The initial scan identified 1,004 infected items. After rebooting in Normal Mode, a second scan resulted in identifying 56 additional infected objects. Subsequent scans continue to identify one infected file that MBAM, and myself directly, cannot seem to delete (even while I'm in Safe Mode). Here's the last MBAM log:

Malwarebytes' Anti-Malware 1.46
www.malwarebytes.org

Database version: 4093

Windows 5.1.2600 Service Pack 2
Internet Explorer 6.0.2900.2180

5/12/2010 1:28:06 PM
mbam-log-2010-05-12 (13-28-06).txt

Scan type: Full scan (C:\|)
Objects scanned: 210246
Time elapsed: 52 minute(s), 56 second(s)

Memory Processes Infected: 0
Memory Modules Infected: 0
Registry Keys Infected: 0
Registry Values Infected: 0
Registry Data Items Infected: 0
Folders Infected: 0
Files Infected: 1

Memory Processes Infected:
(No malicious items detected)

Memory Modules Infected:
(No malicious items detected)

Registry Keys Infected:
(No malicious items detected)

Registry Values Infected:
(No malicious items detected)

Registry Data Items Infected:
(No malicious items detected)

Folders Infected:
(No malicious items detected)

Files Infected:
C:\WINDOWS\system32\drivers\yofun.sys (Rootkit.Agent) -> Delete on reboot.

Any ideas on how I can get rid of the infected file (yofun.sys)?

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#2 Orange Blossom

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Posted 12 May 2010 - 07:17 PM

Hello,

It appears as though you have a rootkit aboard which will require specialized tools to remove. 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.

If you can produce at least some of the logs, then please create the new topic. If you cannot produce any of the logs, then post back here and we will provide you with further instructions.

Orange Blossom :thumbsup:
Help us help you. If HelpBot replies, you MUST follow step 1 in its reply so we know you need help.

Orange Blossom

An ounce of prevention is worth a pound of cure

SpywareBlaster, WinPatrol Plus, ESET Smart Security, Malwarebytes' Anti-Malware, NoScript Firefox ext., Norton noscript

#3 Orange Blossom

Orange Blossom

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Posted 14 May 2010 - 05:25 PM

Hello,

Now that you have posted a log here: http://www.bleepingcomputer.com/forums/t/316778/sister-in-laws-infected-computer/ 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 MRT Team member, nor should you ask for help elsewhere. Doing so can result in system changes which may not show in 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 MRT 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 MRT Team members are EXTREMELY 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 MRT 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 MRT Team member is already assisting you and not open the thread to respond.

Please be patient. It may take several days to get a response but your log will be reviewed and answered as soon as possible. I advise checking your topic once a day for responses as the e-mail notification system is unreliable.

To avoid confusion, I am closing this topic. Good luck with your log.

Orange Blossom :thumbsup:
Help us help you. If HelpBot replies, you MUST follow step 1 in its reply so we know you need help.

Orange Blossom

An ounce of prevention is worth a pound of cure

SpywareBlaster, WinPatrol Plus, ESET Smart Security, Malwarebytes' Anti-Malware, NoScript Firefox ext., Norton noscript




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