Country dismissed the Outbacks for 169 in their one-day game at Toowoomba Grammar School, with allrounder Chris Stanger continuing his fine tournament, claiming 3-46 from nine overs.
Queensland then chased down the target in 33.4 overs, finishing 3-173 with local product Sam Neale top-scoring with 63 from 79 balls.
The Brahmans sit in a tightly bunched group of contenders, with two more rounds until the Final.
Queensland plays NSW tomorrow and then take on defending champions Western Australia on Friday.
The Queensland Women's team are looking to bounce back after faltering in the past few days.
They are taking on NSW this afternoon and take on South Australia tomorrow, needing to win both games to feature in the play-offs.