Hi! I'm trying to identify a weed/vine that's popping up all over my new yard. At first I thought it was poisonous, but it has sets of 5 leaves and thorns. So probably not poisonous. Maybe Virginia Creeper, but I thought VC didn't have thorns? Possibly a Dewberry vine? Any help would be greatly appreciated! It started in the back corner of the yard near a storm water drain but has shot up in the front, along the sides of the house ... seems to like areas with water for sure (near the hoses, drain spouts).

I'm on the coast of South Carolina, Zone 8b, 9a if that helps :)