I dont really know but i has been always very spectical about the ""hackers"" from North Korea i mean for sure they exist but i dont think they are that good like some press and people from the internet wants us to believe.

They have ton of hours are goverment support yes, but they still very poor in formation and in other specials tools.
And another thing more of this kind of things are not ""hacker"" is more like a well design social enginering and poor employers.