A few brown spots appeared on a door frame and within 1 week it has grown to this size (~15cm). I have no idea what it is. How do I remove it completely? I worry that if I just wipe it off, it will just regrow from within the door frame. I've attached 2 pictures to assist with the identification.
Edit: I poked it with a stick and tiny white insects (~2mm) came crawling out of the structure.
My location: South India