from MAK website (loose translation from Russian):
Due to unstabilised approach, missed approach has been initiated. TOGA -> autopilot off -> manual flight. Engines have achieved thrust close to take off thrust. The crew retracted flaps from 30 deg to 15 deg. The aircraft began climb due to pitching up moment and reached pitch attitude about 25 deg. Airspeed began to fall. The crew retracted gear. This was the first time the crew made manual inputs since the start of missed approach procedure. After the airspeed decayed from 150kt to 120kt the crew began transition to dive with the yoke inputs. This stopped the climb, and caused the aircraft to dive and the airspeed to increase. The angle of attack was within limitations. Upon reaching 700m the aircraft began a rapid dive with the pitch attitude reaching -75 deg towards the end of the flight (the end of recording). The aircraft collided with the ground with high speed (more than 450 km/h) and large negative pitch attitude. It took 45 sec from the start of missed approach till the end of recording and descent took about 20 seconds. Engines worked fine, no faults registered on the data recorder. CVR has the tape/recording unit
missing (details are a bit unclear from the text).