Babi Ngepet

The Babi Ngepet is a creature from Indonesian myth. It was not seen as a ghost but rather the result of dark magic where people sacrifice their humanity and become a pig in exchange for great wealth. They can steal money as a Babi Ngepet and can take this pig form at any time, but this most commonly occurs on Thursday nights or at the full moon. They light a candle and return to human form when the candle goes out, often getting another person to guard the candle.Spraying water after using it to wash rice can fend off the Babi Ngepet, as can putting onion or garlic strands in the doorway, which makes a Babi Ngepet get lost

Citations:

A Book of Indonesian Ghosts. N.p., StoryTale Studios.