Hello,please use our guide here .. run all the steps even RKILLRemove Security Tool and SecurityTool (Uninstall Guide)
NOTE STEP 11.As this infection deletes a core executable of Malwarebytes', or does not allow it to run, we will need to download a new copy of it and put it in the C:\program files\Malwarebytes' Anti-Malware\ folder. To download the file please click on the following link:
Post the scan log when finished and tell me how things are now.
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.