Modern versions often work like an "ESP" (Extra Sensory Perception) hack, reading unit positions directly from the game's memory and drawing them on the screen or minimap.
In the context of , a "maphack" refers to a type of third-party software or exploit that removes the "Fog of War," granting a player full vision of the entire map, including their opponent's base, units, and movements. How Maphacks "Work" starcraft remastered maphack work