You don't need it, you can do it legally on any bank or exchange office. Since getting money out is the illegal thing and not using another currency inside Morocco.

If you're a politician or with a bit of power you can get money out of Morocco easily. Even when politicians caught doing that (no foreign nationality but owning stuff outside of Morocco) newspaper write about them and they respond with stuff like I really needed that since I have to send my son to study there... TL;DR: law don't apply on them...