While this is not the first sighting, this time I have more pictures.
Per wikipedia, the Volga Siber is a four-door sedan car manufactured by GAZ, introduced at the 2007 Moscow International Automobile Salon and marketed in a single generation for model years 2008 to 2010.
For a car that was "marketed in a single generation for model years 2008 - 2010" and with 9,000 units ever made sightings in Moscow are surprisingly common.
Expertly parked too, I wouldn't be able to park this thing like that, it's not exactly small. Well, not in one try anyway.