Today in my research, I had to use fairly explicitly the rather tautological property of finite cyclic groups that every normal subgroup is characteristic, i.e. fixed by all automorphisms. This got me wondering:

do (finite) groups with the property that every normal subgroup is characteristic have a name and/or can they be completely classified? Generally, has this property been investigated at all?

Apart from cyclic groups, some groups possessing the above property that immediately come to mind are simple groups, symmetric groups, semi-dihedral groups, and dihedral groups of twice odd order (however not of twice even order).

This is as far as I got on my short walk home (apart from some false claims, see comments). I suspect that this property might be well studied.