What could be the new South Korean solid-fuel missile ?

Norbert Brügge, Germany

Update: 04.01.2023
 

2022. December 30 -- South Korea successfully conducted a second test flight of a solid-fuel space launch vehicle, the defense ministry said..
The state-run Agency for Defense Development (ADD) carried out the test as part of efforts to strengthen "independent" space-based reconnaissance and surveillance capabilities, according to the ministry.

2022, March 30 -- The National Defense Science Research Institute (ADD) succeeded in the first test launch to verify the performance of a solid-state propulsion space launch developed with purely Woori technology, with the presence of the Secretary of Defense and major figures from each county at the National Defense Science Research Institute.

Analysis: This likely two-stage missile was launched from a platform in the sea, documented in the released video. What is noticeable was the speed that built up only slowly after the start, which, in relation to the take-off weight of this small rocket, indicates a low thrust.
This leads me to ussume that the solid-fuel motor (KM) used from the KSLV-1. This motor has a diameter of 1.0 m and a thrust of about 70 kN with a burning time of 58 seconds. With this assumption, the new missile has a length of about 6.2 m. The long fairing, which is supposed to guarantee aerodynamic stability, is also striking. The small solid-fuel motor (AKM), which was used for the KSR-III, would be considered as the second stage. In order to be suitable as a launcher for satellites, however, this projectile requires an additional booster as first stage  (possibly an extended Naro KM-motor).