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Backdoor.Tidserv.1!inf and Trojan.Bamital!inf infections


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#1 princess1221792003

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Posted 05 October 2010 - 03:20 PM

I have an older Gateway computer running Win xp that suddenly would not boot into windows or allow access to files.

I was able to remove the hard drive and use an external drive enclosure to save my important files and run a virus scan from my laptop computer.

The infected computer is listed as drive F on the "my computer" of my laptop

Norton 2011 found quite a few things and left 2 unresolved - Backdoor.Tidserv.1!inf and Trojan.Bamital!inf

Tried Norton Power Scrubber thing - didn't fix it
Tried Malwarebytes - did'n't fix it

Tried the Bootable virus detection disk from Norton on the Desktop (reinstaled the hard drive) and it still found the two infections - didn't fix it. Computer still will not boot...sometimes I can get to the recovery consol, sometimes not.

THe bootable disk said the infections are in:

C:\winnt\explorer.exe
C:\winnt\system32\drivers\imapi.sys

so I guess that if its in the drive enclosure, those C: would be F:

I would like some suggestions and help in removing the infections.

Idealy I'd like pointed to something to remove it for me - but if not, then step by step instructions on how to fix it would be great.

Thanks

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#2 boopme

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Posted 05 October 2010 - 10:15 PM

Hello, let's do this first on the drive windows is installed to.
Is this PC on a network?

Run a full system scan in safe mode with the latest Norton definitions. Then unplug the network connection and reboot the computer. Does the backdoor.tidserv detection come up again? If so, then we need to search for another undetected process on your computer.


Now run TDDS Killer
Please download the TDSS Rootkit Removing Tool (TDSSKiller.exe) and save it to your Desktop. <-Important!!!
Be sure to download TDSSKiller.exe (v2.4.0.0) from Kaspersky's website and not TDSSKiller.zip which appears to be an older version 2.3.2.2 of the tool.
  • Double-click on TDSSKiller.exe to run the tool for known TDSS variants.
    Vista/Windows 7 users right-click and select Run As Administrator.
  • If TDSSKiller does not run, try renaming it.
  • To do this, right-click on TDSSKiller.exe, select Rename and give it a random name with the .com file extension (i.e. 123abc.com). If you do not see the file extension, please refer to How to change the file extension.
  • Click the Start Scan button.
  • Do not use the computer during the scan
  • If the scan completes with nothing found, click Close to exit.
  • If malicious objects are found, they will show in the Scan results - Select action for found objects and offer three options.
  • Ensure Cure (default) is selected, then click Continue > Reboot now to finish the cleaning process.
  • A log file named TDSSKiller_version_date_time_log.txt (i.e. TDSSKiller.2.4.0.0_27.07.2010_09.o7.26_log.txt) will be created and saved to the root directory (usually Local Disk C:).
  • Copy and paste the contents of that file in your next reply.


Next run MBAM (MalwareBytes):

Please download Malwarebytes Anti-Malware (v1.46) and save it to your desktop.alternate download link 1
alternate download link 2
MBAM may "make changes to your registry" as part of its disinfection routine. If using other security programs that detect registry changes (ie Spybot's Teatimer), they may interfere or alert you. Temporarily disable such programs or permit them to allow the changes.
  • Make sure you are connected to the Internet.
  • Double-click on mbam-setup.exe to install the application.
  • When the installation begins, follow the prompts and do not make any changes to default settings.
  • When installation has finished, make sure you leave both of these checked:
    • Update Malwarebytes' Anti-Malware
    • Launch Malwarebytes' Anti-Malware
  • Then click Finish.
MBAM will automatically start and you will be asked to update the program before performing a scan.
  • If an update is found, the program will automatically update itself. Press the OK button to close that box and continue.
  • If you encounter any problems while downloading the definition updates, manually download them from here and just double-click on mbam-rules.exe to install.
On the Scanner tab:
  • Make sure the "Perform Quick Scan" option is selected.
  • Then click on the Scan button.
  • If asked to select the drives to scan, leave all the drives selected and click on the Start Scan button.
  • The scan will begin and "Scan in progress" will show at the top. It may take some time to complete so please be patient.
  • When the scan is finished, a message box will say "The scan completed successfully. Click 'Show Results' to display all objects found".
  • Click OK to close the message box and continue with the removal process.
Back at the main Scanner screen:
  • Click on the Show Results button to see a list of any malware that was found.
  • Make sure that everything is checked, and click Remove Selected.
  • When removal is completed, a log report will open in Notepad.
  • The log is automatically saved and can be viewed by clicking the Logs tab in MBAM.
  • Copy and paste the contents of that report in your next reply. Be sure to post the complete log to include the top portion which shows MBAM's database version and your operating system.
  • Exit MBAM when done.
Note: If MBAM encounters a file that is difficult to remove, you will be asked to reboot your computer so MBAM can proceed with the disinfection process. If asked to restart the computer, please do so immediately. Failure to reboot normally (not into safe mode) will prevent MBAM from removing all the malware.
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#3 princess1221792003

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Posted 06 October 2010 - 09:43 AM

Thanks for the reply.

I have run the scan in safe mode - both infections are still there on the drive.

I'm not sure what you mean by network. This computer is on the internet - obviously - its how it got infected....but Its not a network where its connected to other computers.

I was unable to run the scan the way you suggested. I can't even start the computer with the infection. It will attempt to load windows and then go to a blank screen. The only way I have been able to access the drive is in a drive enclosure connected to another computer. So when the TDSSKiller ran - it only checked the C drive...which is not infected, because it belongs to another computer....in this setup, the infected drive is called F. I was not given an option to make TDSSKiller check the F drive. Regardless if I saved it on the Desktop of the C drive or the Desktop file of the F drive.

Since I could not get TDSSkiller to work, I went no farther.

How do I get TDSSkiller to check the proper infected drive? Is there a bootable disk version?

#4 boopme

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Posted 06 October 2010 - 10:05 PM

When you click the link,TDSSKiller.exe. and select save,there is no way to select the F drive before clicking save again?
How do I get help? Who is helping me?For the time will come when men will not put up with sound doctrine. Instead, to suit their own desires, they will gather around them a great number of teachers to say what their itching ears want to hear....Become a BleepingComputer fan: Facebook

#5 princess1221792003

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Posted 07 October 2010 - 09:16 AM

Even when I save it tot he F Drive, it only scans the C drive.

#6 boopme

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Posted 07 October 2010 - 09:58 AM

Ok I think it's time for a deeper look. Please go here....
Preparation Guide ,do steps 6 - 9.

Create a DDS log and post it in the new topic explained in step 9,which is here Virus, Trojan, Spyware, and Malware Removal Logs and not in this topic,thanks.
If Gmer won't run,skip it and move on.
Let me know if that went well.
How do I get help? Who is helping me?For the time will come when men will not put up with sound doctrine. Instead, to suit their own desires, they will gather around them a great number of teachers to say what their itching ears want to hear....Become a BleepingComputer fan: Facebook

#7 Orange Blossom

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Posted 12 October 2010 - 07:48 PM

Hello,

Now that you have posted a log here: http://www.bleepingcomputer.com/forums/topic353307.html 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.

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