How to remove Malwarebytes from Mac? I would like to remove Malwarebytes from a friend's macbook. 
There is nothing in 


Applications Folder
/Library/LaunchAgents (or in /System/Library/LaunchAgents)
/Library/LaunchDaemons 
/Library/StartUpItems (or in /System/Library/StartUpItems)
System Preferences > Users &amp; Groups


and yet, it is still in the top bar:



Also, please somebody tell me, whether it is a normal program or a virus, because my friend didn't ever want to install the program and it should not be so hard to uninstall a program ever.

Some websites suggested installing CleanMyMac3, but I don't want to install any more software unless I am sure that it is okay, because I also read some bad reviews about CleanMyMac.
I recently accidentally installed this app. Then, I carelessly deleted the app without thinking about its associated Library files and menu bar icon.

It is likely your friend did the same thing and is now stuck with this useless menu bar quick access icon. In that situation, the uninstall directions won't work because the app is deleted.

The easiest way (and only way I know of) to remove this is to re-install MalwareBytes, open the app, and then go to Help > Uninstall MalwareBytes.

This will remove the app and all its associated files ... and that menu bar icon.