Perhaps I shouldn't have made such a wild claim. I was just taken aback at the lack of competence due to lots of giveaways hidden in plain sight. Hard to believe that a state-sponsored cyber espionage actor doesn't realize that the first thing investigators would do is disassemble the executable once it's discovered. I guess everything's possible. @bjourne does make a good point in his reply.

Did you ever consider the Russians didn't care if they were caught or intentionally left clues to let the American Administration understand that they were responsible?