The term "hypersonic missile" these days is short-hand for terminally-guided endoatmospheric missiles that can operate at hypersonic velocities. This is an extremely difficult engineering problem and there is no evidence that anyone has an operational weapon in this class.

Nothing in the Ukraine fits this description. Those are ordinary ballistic missiles, which naturally have hypersonic ballistic re-entry. There is nothing interesting about that, we've had it for 70+ years now.