The plant appears to be stoliniferous rather than vine like. In addition, the five "leaflets" are not palmate (not uniformly divided) and have no leaflet stems (only a single leaf petiole). Petioles and stolons (or stems if I am wrong) are hairy, not glabrous. Not sure what it is, but I am confident it is not Parthenocissus vitacea or P. quinquefolia.
