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Malwarebytes database corrupted

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Last night, I downloaded a few new freemium programs, only after ensuring that they were in fact legitimate, in wide use, and that I was getting them from the most direct source possible.

After doing so, however, Mikogo, a remote desktop tool in wide use, may have caused problems on my system. I allowed a new system service to run from the service, which had a less than reassuring name (not quite the same as the Mikogo program, company, etc). I also downloaded approximately 4 other freemium programs, after investigating their legitimacy, as noted.

Anyways, I could present the entire story of what happened next, but instead I'll skip to this:

I tried to end two new program processes via Task Manager, and access was denied. I noticed my desktop was acting very strangely, and immediately ran Malwarebytes quickscan. Nothing was detected, and I rapidly installed Revo Uninstaller in hopes of removing the new programs, but Revo Uninstaller froze just prior to finishing its installation, and my computer was very slow and acting very poorly.

I turned my computer off forcible (held off button), and rebooted into safe mode. From here, I successfully initiated system restore from earlier in the night. I rebooted again, and the new programs were gone, but two of their installers remained in my downloads folder, and one of my desktop fans appears to be running very loudly, possibly along with one of my hard drives.

I went to initiate Malwarebytes again, and it told me its database was "either removed or corrupted", or something like that, and it reinstalled the newest database version. I saw a flicker of the version it was coming from, which appeared to be just a bunch of zeros (e.g. 00000000000).

I've since run a free Kaspersky scan (full system), TDSS Killer (found nothing except for Abode Switchboard, which I believe is not malicious), am currently running a full SUPERAntiSpyware scan, and so far nothing. However, I am still extremely suspicious that my system is infected, as it still hasn't returned to its normal state just yet, and my fan/hard drive still seem a little too loud.

The worst thing about all of this is that earlier in the day yesterday, I removed my system image from my external hard drive to help someone else back up their files, and planned to put a new system image onto it overnight last night. Obviously, that is an outrageous coincidence, and has left me extremely vulnerable, as I am a very heavy computer user with a huge number of programs.

I am considering seeking assistance with a combofix run through, and thought I'd start my assistance seeking here. I hope this message has been posted in the correct forum.

Thank you so much for any help!



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Hello and welcome, tea: :)

Well, it's certainly possible you may have picked up something.

(MBAM database corruption, itself, can have a number of causes, including infection EDIT: and from having used system restore.)

If you'd like a qualified expert to check your system, please follow the suggestions below, as we don't work on malware-related stuff in this particular section.

IMPORTANT: Please do NOT use any temporary file cleaners unless instructed to do so - they can cause data loss, making recovery difficult.

There are some excellent, self-help tutorials on getting MBAM to run on an infected system in the FAQ: HERE.


OPTION 1: Free, one-on-one, expert assistance in the Malware Removal Forum.

OPTION 2: For licensed users of MBAM PRO, there is free, one-on-one, expert assistance from the MBAM support helpdesk.

OPTION 3: Fee-based, one-on-one, expert assistance from Premium Support.


  • Please print out, read and carefully follow the instructions in the "I'm Infected - What Do I Do Now?" sticky topic.
  • -->If the infection has so crippled the computer that you cannot complete some or all of the steps, then just do the best you can and start a new topic as described below.
  • Then please start a new post in the Malware Removal Forum.
  • An authorized, trained malware expert will provide free, one-on-one assistance as soon as one becomes available.

  • -->>When starting your new post, please note the following:<<--
  • Please do NOT post in a topic started by someone else, even if their problem sounds similar.
  • Please COPY/PASTE the requested logs directly into your post, rather than attaching them.
  • Under options, please be sure to select "track this topic" and "immediate email notification", so you'll know when a helper responds.
  • Please be patient - it may be 48 hours or more before a helper can assist you, especially when the forum is very busy.
  • Please do NOT "bump" your topic or reply back to it for at least 48 hours.
  • Doing so may cause your topic to be overlooked, as it will appear that you are already being helped.


If you are a paid user of MBAM PRO and would like support via the helpdesk, please contact them HERE.


If you prefer the Malwarebytes Premium Services (comprehensive solutions to all your computer support needs – from installation and set-up to troubleshooting and tune-ups), please go to the Premium Support site HERE.

Please be patient – someone will assist you as soon as possible.

Thank you very much,


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  • Root Admin

Please do the following and let us know if this corrects the issue for you or not to get Malwarebytes working properly again. If you're still having issues or concerned that you may have an infection please follow the advice posted above to have someone assist you in checking for an infection.

  • Download and run mbam-clean.exe from here
  • It will ask to restart your computer, please allow it to do so very important
  • After the computer restarts, temporarily disable your Anti-Virus and install the latest version of Malwarebytes' Anti-Malware from here
    • Note: You will need to reactivate the program using the license you were sent via email if using the Pro version
      You can also look up your ID and Key from the Registry and copy and paste it to a Notepad document before running the mbam-clean utility.
      Location for Windows x86

      HKEY_LOCAL_MACHINE\SOFTWARE\Malwarebytes' Anti-Malware

      Location for Windows x64

      HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Malwarebytes' Anti-Malware

    • Launch the program and set the Protection and Registration. Then go to the UPDATE tab if not done during installation and check for updates.
      Restart the computer again and verify that MBAM is in the task tray if using the Pro version. Now setup any file exclusions as may be required in your Anti-Virus/Internet-Security/Firewall applications and restart your Anti-Virus/Internet-Security applications. You may use the guides posted in the FAQ's here or ask and we'll explain how to do it.


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