Probably worth considering here - if this was a state-sponsored attack, it's entirely possible (and exactly what I would do if I was running such a program) that there is one person or department actually writing the code and list messages etc, and another person or team who sits between that department and the internet and whose entire job is to ensure that everything that comes out from the development team takes place at actual times and with timestamps that are consistent with whatever story they're using for the project. Possibly even once in a while intentionally inserting a "mistake" to hint to investigators that the person's real location is another chosen place, which is also different from the real place where the project is being run.