What is known

Ukrainian bombers were equipped with the pylons of decommissioned British Panavia Tornado aircraft. This was reported by an analyst at @Osinttechnical. Judging by the photos, parts of the Tornado pylon were installed on a stock Su-24 pylon. Then a Storm Shadow missile is hung on this structure.

By the way, Ukraine has modified not only Su-24 bombers but also Su-27 fighters. They are capable of carrying AGM-88 HARM anti-radar missiles.