Download the latest version of Malwarebytes from Malwarebytes.org
Double click to install, all the time accept to download updates.
When you are on the Malwarebytes main menu, click the "Updates" tab to update the latest updates. After that click on the "Scanner" tab yet again and click "Perform quick scan"
After the scan is completed, a report will pop up, you can just close it. Then click "Show Results", and click "Remove Selected".
Click "Yes" to accept to reboot to clean up the remaining.