In most cases, you can close the Maftask process by going to the Activity Monitor from your Mac’s Utilities screen, selecting the unwanted entry and clicking the ‘Quit Process’ button. On a confirmation dialog, select the ‘Force Quit’ option to terminate the stubborn executable. Keep in mind, though, that Maftask will most likely reappear on your running processes list unless you apply the appropriate malware removal procedure. To get rid of Maftask for good, you need to uninstall the underlying fake system utility called Mac Auto Fixer that relies on the offensive binary in question. Aside from closing the malicious process in the Activity Monitor, remove the core program from your Applications and Login Items as explained in the guide above. Consider emptying the Trash when done.