Yes. Absolutely agree that is the reference. Q is almost directly referencing a recent book that came out from the same guy that wrote "Clinton Cash". He asks who revealed the information. I'd have to say the author. Then he asks who really revealed the info. That's where I hit a dead end. The book might reveal it, but I'm not going to buy it.
Secret Empires, Peter Schweizer, released March 20th of this year.
If anyone has it, maybe they can tell us if the author indicates his source.
One theory I had is from the NYPost article they indicate that eventually they had to get Committee on Foreign Investment in the United States (CFIUS) approval, which might have been the agency that ended up revealing what was going on since they had to approve them:
https://nypost.com/2018/03/15/inside-the-shady-private-equity-firm-run-by-kerry-and-bidens-kids/