What's this called?
I don't think I'd ever seen it at master level before (though I find that Jobava also played it against Malakhov in Warsaw last month, a game Chess Today subscribers will find in issue 4787). Matter of fact I don't think I've seen it in a club or tournament game - or even when I used to play on Yahoo chess.
I'm sure I saw it played when I was a junior, but only when we found out you could actually start a game 1.d4 d5 instead of 1.e4 e5 so we played, in the mirror, the kingside sequence with which we were most familiar, but on the queenside instead.
You find out that it isn't as simple as that at about the same time you start learning that there are different openings with different names, and whatever book you learn them from, you're doing well if you find out a name for what Jobava played against Malakhov and Xhao.
On Chessbase Alejandro Ramírez offered us "a random opening", which is not entirely helpful, though no less helpful than Nunn's Chess Openings, which after 1.d4 Nf6 gives 2.Nc3 d5!= and never mind what White does next.
So what is it? I don't think it's a Veresov because that involves White playing 3.Bg5. It might be a London System but I doubt it: that normally begins with 2.Nf3, the b1-knight not necessarily going to c3. You could reach our position via 1.d4 d5 2.Bf4 (pop quiz: is 1.d4 Nf6 2.Bf4 playable?) but is that a London System anyway, or just a stop on the road towards it?
Older books used to get out of this by calling things "Irregular Opening" or "Queen's Pawn Game" (another pop quiz: is there such a thing as a "King's Pawn Game"?) but it seems strange to have, apparently, no name for a position after White's third move arising from such a natural sequence of moves. Or is there one?