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File association changed


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#1 gezclem

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Posted 09 June 2013 - 12:10 PM

I appear to have picked up a virus which associates all exe files with notepad. I cannot remove the virus as any anti virus software I run is attempted to be opened with notepad. Any suggestions to rectify the problem gratefully received.

 

Mod Edit: Moved from Windows 7 to a more appropriate forum. ~bloopie


Edited by bloopie, 09 June 2013 - 01:01 PM.


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#2 bloopie

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Posted 09 June 2013 - 01:08 PM

Hello gezclem, and welcome to Bleeping Computer! :)
 
If your file associations are not working, then let's try to rename Malwarebytes Antimalware to get it to run using a ".com" extension:

Please download Malwarebytes Anti-Malware mbamicontw5.gif and save it to your desktop.

  • Important!! When you save the mbam-setup file, rename it to something random (such as 123abc.com) before beginning the download.
  • Double-click on the renamed file to install, then follow these instructions
  • for doing a Full Scan in normal mode.
  • Don't forget to check for database definition updates through the program's interface (preferable method) before scanning.
  • If you cannot update Malwarebytes or use the Internet to download any files to the infected computer, manually update the database by following the instructions in FAQ Section A: 4. Issues

Malwarebytes 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.

  • After completing the scan, a log report will open in Notepad.
  • The log is automatically saved and can be viewed by clicking the Logs tab .
  • 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 the database version and your operating system.
  • Exit Malwarebytes when done.

Note: If Malwarebytes encounters a file that is difficult to remove, you will be asked to reboot your computer so it can proceed with the disinfection process. If asked to restart the computer, please do so immediately. Failure to reboot normally will prevent Malwarebytes from removing all the malware.

-- Some types of malware will target Malwarebytes and other security tools to keep them from running properly. If that's the case, use Malwarebytes Chameleon and follow the onscreen instructions. The Chameleon folder can be accessed by opening the program folder for Malwarebytes Anti-Malware (normally C:\Program Files\Malwarebytes' Anti-Malware or C:\Program Files (x86)\Malwarebytes' Anti-Malware).

==========

Please post the resultant log in your next reply for me, and let me know how the machine is running now!

bloopie



#3 gezclem

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Posted 09 June 2013 - 02:49 PM

Hi Bloopie

Thanks for the advice. However, Malwarebytes Anti- Malware won't install. I renamed the file abc.com before downloading but get the following error message when I try to install it:-

ShellExecuteEx failed; code 1155
No application is associated with the specified file for this operation.

Any ideas?

Regards
gezclem

#4 bloopie

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Posted 09 June 2013 - 03:20 PM

Hello again,
 
Hmm, try this tool next:

Please download Rkill by Grinler and save it to your desktop.
  • 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.
  • If the tool does not run from any of the links provided, please let me know.
Do not reboot the computer, you will need to run the application again.
 
==========

If the tool runs (and works), then before rebooting, try my previous instructions and run MBAM as well.
 
If the tool does not run, then I will move this topic to the Malware Removal Forum and continue helping there. Do you have access to a flashdrive and/or another working computer?
 
bloopie

Edited by bloopie, 09 June 2013 - 03:22 PM.


#5 gezclem

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Posted 10 June 2013 - 09:48 AM

Still would not run. However, I managed to get my anti virus running from the command prompt and removed the virus. I then ran system restore from the command prompt. This cured the problem. Finally resored the correct desktop icons for each prog by hand. A bit of a tedious task! Now have my machine resored to full health. Must be careful to actually read anti virus warnings next time. Thanks for your help. I will certainly be using the two program's you suggested to make frequent checks.

Regards

gezclem

#6 bloopie

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Posted 10 June 2013 - 05:36 PM

Hello again,

Glad you got it sorted out, and thanks for letting me know! :)

MBAM is a great program to keep on your computer for weekly/monthly scans, and it's very effective.

Rkill is also a great program to stop unwanted malware processes (and among other things, resets file associations), but once the system is rebooted (and malware is present) the malware will reload itself. So Rkill should be used before MBAM (for nasty malware processes), without rebooting in between.

If you don't mind and for the record, what detections did your antivirus program find?

bloopie




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