Here is my opinion as someone who worked with alongside North Koreans (textile factory) and visited NK. I am from East Europe and have 10 years in IT. - NK secret service (or whatever you call it) is more sophisticated than this. They will act as proper company from Turkey, India, China or even EU countries... - if you actually manage to get some North Korean who escaped to West, they are 10x more dedicated than anyo…
Out of curiosity, how would a North Korean who escaped to the West even get money to relatives still there?
Today there is most likely trade with China (I am not familiar with that). I would go through Russia, there is direct border and regular trade. NK building companies operate in captured parts of Ukraine for example.
Or just use bitcoin. NKs do have access to internet, it is good store of value (better than diamonds) and highly liquid asset!