Malakh Darreh-ye Sofla (Persian: ملخدره سفلي, also Romanized as Malakh Darreh-ye Soflá; also known as Malakh Darreh) is a village in Firuzeh Rural District, in the Central District of Firuzeh County, Razavi Khorasan Province, Iran. At the 2006 census, its population was 171, in 52 families.