Place pork tenderloin in a shallow dish.

Pour soy sauce, sesame oil, and Worcestershire sauce into a medium bowl. Whisk in green onions, garlic, brown sugar, chile paste, and pepper until combined. Pour sauce over tenderloin, turning meat a few times to coat. Cover the dish and marinate in the refrigerator for 8 hours to overnight.

Preheat the oven to 450 degrees F (230 degrees C).

Transfer pork tenderloin with marinade into an aluminum foil-lined baking pan.

Roast in the preheated oven until an instant-read thermometer inserted into the center reads at least 145 degrees F (63 degrees C), 25 to 30 minutes. Allow to stand 5 to 10 minutes before carving.