The Microsoft Malicious Software Removal Tool is one of the worst standalone removal tools.
The first thing I do after installing the OS is to disable it from even being offered by Windows Updates although that's up to you.
If you want to disable it from being offered is it's useless really, simply copy/paste the below command in a blank notepad text file, then save it with any name that you want then change the extension from .txt to .reg and double click on the file to merge it with your registry. Now the tool won't be offered anymore with Windows Updates:
Windows Registry Editor Version 5.00
Put to the test for 12 months: This is how well security packages and special tools help after an attack