Not an electric motor , definitely a gasoline piston engine ,its very clear from the sound/noise .
Even the nose of the drone looks like an piston engine mounted on it not an electric motor
Iran unveiled a new variant of the Shahed-101 drone. It appears to use a front propeller instead of the usual rear pusher gasoline piston engine seen on other Shahed drones. From its sound and external layout, it seems to be powered by an electric motor. The airframe has a fixed wing design and an X-shaped tail at the rear. For launch, the drone uses a jet powered booster mounted at the back. This booster helps it gain speed during takeoff and then separates after launch.