I agree that the knot is an Overhand Loop ABoK #1009, 1046, but tied with two ropes instead of one. It is OK if there is no real load on the long tails. But it is well known to slowly come untied with a great load on both the standing parts (two ropes) and the tails (two ropes) in different directions. Ashley has lots of knots on pages 190 and 191 that might be better, including ABoK # 1057 and 1058 which are now usually called In-Line Figure Eight Loops or Three-Quarter Figure Eight Loops.