If this was shot down, I don’t expect the perpetrators to claim they did until they are about 50 miles away and upwind.
Those particular “perpetrators” have managed to besiege the US base in the Sinai for some time ... they are also very good at intel.
Hitting them is not a task the Egyptian army is capable of without large losses ... at least so far. The Russian won’t bother, they have other things to do, and are getting closed to being over-extended militarily.
Russia’s main forces are still on the Russia-China border, treaty or not.