Room for misreporting and poor translation, Ministry of Emergenciencies says that the "tail hit the ground".
Airliner crashes in Russia; 61 aboard reported dead http://www.cnn.com/2016/03/18/europe/russia-plane-crash/index.html
Re the video:
Using the passing car as a reference, the security camera is sensitive to the IR emitting in Nav, landing lights and flame.
There appears to be two distinct targets (lights) descending that do not alter their relative position on descent.
The online video looks to have been recorded off a screen.
This would explain the curious framing for a security camera.
The original recording should have more detail.
Mickjoebill