Speculation has it that either “Palyantsia” (small turbojet drone) or “Neptun” (sizable cruise missile, antiship with ground strike capability) were used. Since part of the Russian facility was hardened and underground, I would ordinarily favour the hypothesis of “Neptun”, but it’s supposed to be out of their range and the videos recorded over Russia featured a turbojet sound and the video you linked has a small explosion (this would fit “Palyantsia”, since it’s small).