My rattling noise came from engine compartment in front. Sitting at both front passenger seats, you will hear it. The sound seems to be inside the car, after few rounds of detection, it was confirmed inside the bonet at the air filter. Each servicing they took the air filter in/out and had cause the connection parts to become loose.
I went down to Ubi, the problem was solved

, no more noisy car, very quiet even without the radio ON.
Look for Hussin, we went testing together and he solved it.