Patrick Frater Asia Bureau Chief “Exhuma,” a locally produced occult drama-thriller, expanded its domination of the South Korea box office on its second week of release. That left the newly-released “Dune 2” several sand dunes behind in second place. “Exhuma,” about two shaman, a feng shui master and a mortician who attempt to undo the mysterious events happening to a U.S.-based Korean family, earned $17.2 million between Friday and Sunday, representing a 69% share of the overall box office market.