well...you are not the first....
so if you search the forum for "memory scan" / "detection in memory" / or any combination of that you should find a million cases in here...and why you dont do that
unless you know something the avast guys dont know....or have some special need, then dont change the scan settings
use default quick/full scan with default settings
maxthon.exe belongs to maxthon browser....
and the apply button is gray bc it is a process....and not a file....so nothing to be moved