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NTFSDOS won't delete file


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#1 YardieTech

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Posted 05 January 2010 - 02:13 PM

I am wondering if anyone else has seen this before.

XP pro infected with InternetSecurity2010 malware and H8SRT rootkit. Was not able to run any of the usual tools so booted into NTFSDOS to delete files manually. The H8SRT file was in the Drivers folder and there were several files in the system32 folder such as pr09.dll, pr10.dll and winlogon86.exe.

I was NOT able to delete these files ... running the DEL command produced no errors but the files were still there. I deleted them several times, each time with no errors on the screen but they still showed up with DIR.

I tried it with the full file name and the the 8.3 format with the same result.

I was able to REN the files without any errors but on doing a DIR they showed up back under the original names --- it was as if the files were re-generating themselves as they do when running in Windows but this isn't supposed to be possible in real mode DOS.

I have used NTFSDOS dozens of times before to kill malware and have never had this problem. NTFSDOS ver is 3.03.

Hopefully someone else has seen this also so I'll know I am not in the twilight zone :thumbsup:

Thanks

Edited by YardieTech, 05 January 2010 - 02:14 PM.


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#2 YardieTech

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Posted 06 January 2010 - 01:05 PM

No comments on this eh?

Well to all the moderators and other spyware experts out there, here's a question for you.

We have all seen bugs that morph and re-generate themselves instantly while running under Windows .... we have all deleted entries from the registry only to see them instantly re-appear on refresh.

Well have they now developed bugs that behave the same way in real mode DOS? I cannot see how this is possible but hope to hear back if any of you have any thoughts on this.

Thanks again.

Edited by YardieTech, 06 January 2010 - 05:32 PM.


#3 quietman7

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Posted 06 January 2010 - 03:16 PM

Some infections are difficult to remove completely because of their morphing characteristics which allows the malware to regenerate itself. Sometimes there is hidden piece of malware (i.e. rootkit) which has not been detected by your security tools that protects malicious files and registry keys so they cannot be permanently deleted. Other types of malware can even terminate your security tools by changing the permissions on targeted programs so that they cannot run or complete scans.

Did you try using MBAM with Rkill?

Please download Rkill by Grinler and save it to your desktop.Link 2
Link 3
Link 4
  • Double-click on the Rkill desktop icon to run the tool.
  • If using Vista, right-click on it and Run As Administrator.
  • A black DOS box will briefly flash and then disappear. This is normal and indicates the tool ran successfully.
  • If not, delete the file, then download and use the one provided in Link 2.
  • If it does not work, repeat the process and attempt to use one of the remaining links until the tool runs.
  • Do not reboot until instructed.
  • If the tool does not run from any of the links provided, please let me know.
Please download Malwarebytes Anti-Malware (v1.43) 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.

Also see For those having trouble running Malwarebytes Anti-Malware
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#4 YardieTech

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Posted 06 January 2010 - 06:54 PM

Thanks for your response, quietman7. I have used MBAM many times and am a big fan.

Do you have any comments though on either of my two posts?

Edited by YardieTech, 06 January 2010 - 06:54 PM.


#5 quietman7

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Posted 06 January 2010 - 10:28 PM

Not without more information or seeing a more detailed description of what's going on with your system. Before that you will need you to create and post a DDS/HijackThis log for further investigation if your current attempts at removal are unsuccessful.

Please read the pinned topic titled "Preparation Guide For Use Before Posting A Hijackthis Log". If you cannot complete a step, then skip it and continue with the next. In Step 6 there are instructions for downloading and running DDS which will create a Pseudo HJT Report as part of its log.

When you have done that, post your log in the HijackThis Logs and Malware Removal forum, NOT here, for assistance by the HJT Team Experts. A member of the Team will walk you through, step by step, on how to clean your computer. If you post your log back in this thread, the response from the HJT Team will be delayed because your post will have to be moved. This means it will fall in line behind any others posted that same day.

Start a new topic, give it a relevant title and post your log along with a brief description of your problem, a summary of any anti-malware tools you have used and a summary of any steps that you have performed on your own. An expert will analyze your log and reply with instructions advising you what to fix. After doing this, we would appreciate if you post a link to your log back here so we know that your getting help from the HJT Team.

Please be patient. It may take a while to get a response because the HJT 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 "bump" your post or make another reply until it has been responded to by a member of the HJT 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 HJT Team member is already assisting you and not open the thread to respond.
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