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Illegal Instruction Attempt On Malwarebytes Exit

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I am having a problem that does not seem to affect my scanning, as far as I can tell. The program seems to function beautifully and effectively until I hit Exit and get this error: "The exception Illegal Instruction: An attempt was made to execute an illegal instruction. (0xc000001d) occurred in the application at location 0x003e4ba4.
Click on OK to terminate the program." I have gotten no other errors about malware removal and no other freezing during scans. I have already tried uninstalling/reinstalling the program; any other suggestions? Thanks.

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Hello and :welcome:

Please run the following scans and post back the logs and we'll take a look at what's going on.


Please create an mbam-check log:

  • Download mbam-check.exe from here and save it to your desktop
  • Double-click on mbam-check.exe to run it, it should then open a log file
  • Please do not copy and paste the entire contents of the log into your next post, instead please attach the log CheckResults.txt file which should now be located on your desktop to your next post

Please run the following scanner and send back the logs.

Download DDS from one of the locations below and save to your Desktop



Temporarily disable any script blocker if your Anti-Virus/Anti-Malware has it.

How To Temporarily Disable Your Anti-virus, Firewall And Anti-malware Programs

Once downloaded you can disconnect from the Internet and disable your Ant-Virus temporarily if needed.

Then double click dds.scr or dds.com to run the tool.

Click the Run button if prompted with an Open File - Security Warning dialog box.

A black DOS console should open and run for a moment.

  • When done, DDS will open two (2) logs:
  • DDS.txt
  • Attach.txt
  • Save both reports to your desktop
  • Please include the following logs in your next reply as an attachment: DDS.txt and Attach.txt

    You can ignore the note about zipping the Attach.txt file


Please download MiniToolBox save it to your desktop and run it.

Checkmark the following check-boxes:

  • Flush DNS
  • Report IE Proxy Settings
  • Reset IE Proxy Settings
  • Report FF Proxy Settings
  • Reset FF Proxy Settings
  • List content of Hosts
  • List IP configuration
  • List Winsock Entries
  • List last 10 Event Viewer log
  • List Installed Programs
  • List Devices
  • List Users, Partitions and Memory size.
  • List Minidump Files
Click Go and post the result (Result.txt). A copy of Result.txt will be saved in the same directory the tool is run.

Note: When using Reset FF Proxy Settings option Firefox should be closed.


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Hi, SG1Fan: :)




Is this the same computer with which MrC is already assisting you here: http://forums.malwarebytes.org/index.php?showtopic=130370?


If so, it would be advisable to stay with your helper in that other topic, until he gives you the "all clear".

If not, then please follow Firefox's advice to reply back to this topic with the requested logs.





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Unfortunately, the link


is not loading at all. I cannot believe the amount of programs that I am now having to run because of this crapware, and now, I am even more wary of downloading all these programs. Still, I ran dds.scr as it seems to be recommended from multiple sources, and I read through the logs to see what I would be posting to the world. If I can get the attachment feature to work without ad-ons, I will use it in my malware help thread; otherwise, I'll just have to paste the logs unfortunately. What is MiniToolbox? Thanks so much.

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  • Root Admin

All of these are logs to see what's going on with your computer and how best to fix it.


Please see the following post which may help you to understand a little bit more why different tools are used.


The complexity of finding, preventing, and cleanup from malware



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Apparently, the BAM-Check loaded for me now. Assuming you see nothing wrong with this file, should I assume that the problem is not with MBAM itself? Also, am I supposed to be running mbam.exe or mbamgui.exe? I've been running mbam.exe. Thanks.


Finally, regarding MiniTools and other programs, I was just trying to see what the programs do before I install them. I've been googling them to see what other references come up about them. I do understand that one tool is not enough for malware, but I am attempting to be cautious (a little belatedly maybe.)CheckResults.txt

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  • Root Admin

Please ask MrC any questions you have an he can assist you.  Please attach the MBAM-CHECK log in your other topic and he can review that as well.  He is trained at detecting and removing malware and you running things on your own will only make it harder for him to help you.


Thank you again.

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I will do that; thanks. I did not do that earlier because I thought that an error in the MBAM application was a separate issue requiring a support thread, as I would create for errors in any other application I run. I understand though that it may be related to my existing issue on the Malware Help forum and will add this log there.

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