I hadn't really paid much attention to the model, but assuming Fencer D; the following may well have been taken in Syria (too big for PPRuNe hence just a link) and shows some of its self-protection kit:
http://quwa.org/wp-content/uploads/2015/09/SU-24-1.jpg
Antennas on fin are RWR with internal ECM, chaff and flare. However, this kit is mainly optimised for low level since the B model; the moving ramps became fixed, reducing max speed at altitude from over M2 to around M1.3 making them more vulnerable at medium level. In terms of technology it's an old design, but has been developed and upgraded so it's no slouch.