Originally Posted by
Schind
It could be AirBridgeCargo or someone else from the Volga-Dnepr Group that's bought them and planning to convert them to freighters. They had four 747-8F's on order with Boeing, cancelled one of them (and some 777F's) due to lack of cash in early 2020 then rescinded the cancellation leading to a court case as Boeing had already resold the 747 to Atlas. The other three 747s have also since been sold to Atlas.
I did some more digging around and I think that the only Russian airline with RB211s is SkyGate. They have two former Cathay Pacific 747 Freighters with quite the livery:
