The scene was quite dark(at night) and had a dark bluish hue to it. The setting was inside of a house which had a set of stairs.
The scene that I remembered : the son(around 7yo) was hunting down his own mother in their house, while holding a weapon(not sure what it was, i think it was an axe). The mother was very scared and tried to hide from him. Not sure whether the son was possessed or not. I saw it when I was probably 4 or 5, so the memory was unclear.
Sounds like ‘Bobby’ which was the 3rd segment in Dead of Night (1977) https://www.imdb.com/title/tt0075917/
It was also remade as part of Trilogy of Terror II (1996)