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system infected with tfsnifs.sys rootkit


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3 replies to this topic

#1 Holly52119

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Posted 06 November 2010 - 08:40 AM

Hi there,

I recently ran a AVG2011 rootkit scan and found that there is a hidden rootkit located at windows\system32\dla\tfsnifs.sys. Because the rootkit is hidden, AVG cannot remove it. I am completely computer illiterate so I have no idea what to do and was hoping you could help with removing it. A friend of mine told me to download and run combofix but i have seen that it is not a good idea to run it without assistance.

Thanks!!

Hi there,

I have Windows XP and I recently ran a AVG2011 rootkit scan and found that there is a hidden rootkit located at windows\system32\dla\tfsnifs.sys. Because the rootkit is hidden, AVG cannot remove it. I am completely computer illiterate so I have no idea what to do and was hoping you could help with removing it. My computer is running very slow and when I have tried to uninstall programs (RealPlayer, etc), it says the path is not available. A friend of mine told me to download and run combofix but i have seen that it is not a good idea to run it without assistance. Any help would be wonderful!

Thanks!!

I should also mention that I ran Malwarebytes, which found nothing. I also ran sophos anti-rootkit which found several files that it would clean up but it said clean up was not recommended.

I also posted to techsupport blog last night and they told me to run GMER. I did that and here are the results.

GMER 1.0.15.15507 - http://www.gmer.net
Rootkit scan 2010-11-06 19:22:15
Windows 5.1.2600 Service Pack 3 Harddisk0\DR0 -> \Device\Ide\IAAStorageDevice-0 WDC_WD25 10.0
Running: gmer.exe; Driver: C:\DOCUME~1\MARCIA~1\LOCALS~1\Temp\pgloapoc.sys


---- System - GMER 1.0.15 ----

SSDT \SystemRoot\system32\DRIVERS\AVGIDSShim.Sys (IDS Application Activity Monitor Loader Driver./AVG Technologies CZ, s.r.o. ) ZwOpenProcess [0xF007B6C0]
SSDT \SystemRoot\system32\DRIVERS\AVGIDSShim.Sys (IDS Application Activity Monitor Loader Driver./AVG Technologies CZ, s.r.o. ) ZwTerminateProcess [0xF007B770]
SSDT \SystemRoot\system32\DRIVERS\AVGIDSShim.Sys (IDS Application Activity Monitor Loader Driver./AVG Technologies CZ, s.r.o. ) ZwTerminateThread [0xF007B810]
SSDT \SystemRoot\system32\DRIVERS\AVGIDSShim.Sys (IDS Application Activity Monitor Loader Driver./AVG Technologies CZ, s.r.o. ) ZwWriteVirtualMemory [0xF007B8B0]

---- Kernel code sections - GMER 1.0.15 ----

init C:\WINDOWS\system32\DRIVERS\mohfilt.sys entry point in "init" section [0xF782D760]

---- Devices - GMER 1.0.15 ----

AttachedDevice \FileSystem\Ntfs \Ntfs AVGIDSFilter.Sys (IDS Application Activity Monitor Filter Driver./AVG Technologies CZ, s.r.o. )
AttachedDevice \Driver\Tcpip \Device\Ip avgtdix.sys (AVG Network connection watcher/AVG Technologies CZ, s.r.o.)
AttachedDevice \Driver\Tcpip \Device\Tcp avgtdix.sys (AVG Network connection watcher/AVG Technologies CZ, s.r.o.)
AttachedDevice \Driver\Tcpip \Device\Udp avgtdix.sys (AVG Network connection watcher/AVG Technologies CZ, s.r.o.)
AttachedDevice \Driver\Tcpip \Device\RawIp avgtdix.sys (AVG Network connection watcher/AVG Technologies CZ, s.r.o.)

Device \FileSystem\Fastfat \Fat A4025D20

AttachedDevice \FileSystem\Fastfat \Fat fltmgr.sys (Microsoft Filesystem Filter Manager/Microsoft Corporation)
AttachedDevice \FileSystem\Fastfat \Fat AVGIDSFilter.Sys (IDS Application Activity Monitor Filter Driver./AVG Technologies CZ, s.r.o. )

Device \FileSystem\Cdfs \Cdfs tfsnifs.sys (Drive Letter Access Component/Sonic Solutions)

---- EOF - GMER 1.0.15 ----

Merged topics then posts. ~ OB

Edited by Orange Blossom, 07 November 2010 - 02:16 PM.


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#2 gringo_pr

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    Bleepin Gringo


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Posted 14 November 2010 - 01:09 AM

Hello and Welcome to the forums!

My name is Gringo and I'll be glad to help you with your computer problems.

Somethings to remember while we are working together.

  • Do not run any other tool untill instructed to do so!
  • Please Do not Attach logs or put in code boxes.
  • Tell me about any problems that have occurred during the fix.
  • Tell me of any other symptoms you may be having as these can help also.
  • Do not run anything while running a fix.

In the upper right hand corner of the topic you will see a button called Options. If you click on this in the drop-down menu you can choose Track this topic. By doing this and then choosing Immediate E-Mail notification and then clicking on Proceed you will be advised when we respond to your topic and facilitate the cleaning of your machine.

We apologize for the delay in responding to your request for help. Here at Bleeping Computer we get overwhelmed at times, and we are trying our best to keep up. Please note that your topic was not intentionally overlooked. Our mission is to help everyone in need, but sometimes it takes just a little longer to get to every request for help. No one is ignored here.

In order for me to see the status of the infection I will need a new set of logs to start with.

Please print out or make a copy in notpad of any instructions given, as sometimes it is necessary to go offline and you will lose access to them.

DeFogger:

  • Please download DeFogger to your desktop.

    Double click DeFogger to run the tool.
  • The application window will appear
  • Click the Disable button to disable your CD Emulation drivers
  • Click Yes to continue
  • A 'Finished!' message will appear
  • Click OK
  • DeFogger may ask you to reboot the machine, if it does - click OK
Do not re-enable these drivers until otherwise instructed.

Download DDS:

  • Please download DDS by sUBs from one of the links below and save it to your desktop:

    Posted Image
    Download DDS and save it to your desktop

    Link1
    Link2
    Link3

    Please disable any anti-malware program that will block scripts from running before running DDS.

    • Double-Click on dds.scr and a command window will appear. This is normal.
    • Shortly after two logs will appear:
    • DDS.txt
    • Attach.txt
  • A window will open instructing you save & post the logs
  • Save the logs to a convenient place such as your desktop
  • Copy the contents of both logs & post in your next reply



Scan With RKUnHooker

  • Please Download Rootkit Unhooker Save it to your desktop.
  • extract RKUnhooker to your desktop
    Note** it is zipped up in a .rar file - If you do not have a program to unzip this type of file
    you can get a free one from here - http://www.7-zip.org/
  • Now double-click on RKUnhookerLE.exe to run it.
  • Click the Report tab, then click Scan.
  • Check (Tick) Drivers, Stealth,. Uncheck the rest. then Click OK.
  • Wait till the scanner has finished and then click File, Save Report.
  • Save the report somewhere where you can find it. Click Close.
Copy the entire contents of the report and paste it in a reply here.

Note** you may get this warning it is ok, just ignore

"Rootkit Unhooker has detected a parasite inside itself!
It is recommended to remove parasite, okay?"


"just click on Cancel, then Accept".


information and logs:

In your next post I need the following

1.logs from DDS
2.log from RKUnHooker
3.let me know of any problems you may have had
[/list]
Gringo

I Close My Topics If You Have Not Replied In 5 Days If You Will Be Longer Please Let Me Know

If I Have Not Replied To One Of My Topics In 48 Hrs Please Bump The Topic



My help is free, however, if you wish to make a small donation to show your appreciation or to help me continue the fight against Malware, then click here -->btn_donate_SM.gif<-- Don't worry every little bit helps.

Proud Graduate Of Malware Removal University

#3 gringo_pr

gringo_pr

    Bleepin Gringo


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Posted 17 November 2010 - 07:33 PM

Hello

three day bump

It has been Three days since my last post.

  • do you still need help with this?
  • do you need more time?
  • are you having problems following my instructions?
  • if after 48hrs you have not replied to this thread then it will have to be closed!

Gringo
I Close My Topics If You Have Not Replied In 5 Days If You Will Be Longer Please Let Me Know

If I Have Not Replied To One Of My Topics In 48 Hrs Please Bump The Topic



My help is free, however, if you wish to make a small donation to show your appreciation or to help me continue the fight against Malware, then click here -->btn_donate_SM.gif<-- Don't worry every little bit helps.

Proud Graduate Of Malware Removal University

#4 gringo_pr

gringo_pr

    Bleepin Gringo


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Posted 20 November 2010 - 12:28 AM

Due to lack of feedback, this topic is now Closed

If you need this topic reopened, please send me a PM.
Please include the address of this thread in your request.
This applies only to the original topic starter.

Everyone else please start a new topic.

The fixes and advice in this thread are for this machine only.
Do not apply the instructions from this thread to your own machine.
Please start a new thread describing your issue and someone will be along to assist you.


With Regards,
Gringo
I Close My Topics If You Have Not Replied In 5 Days If You Will Be Longer Please Let Me Know

If I Have Not Replied To One Of My Topics In 48 Hrs Please Bump The Topic



My help is free, however, if you wish to make a small donation to show your appreciation or to help me continue the fight against Malware, then click here -->btn_donate_SM.gif<-- Don't worry every little bit helps.

Proud Graduate Of Malware Removal University




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