Between 12 December 1942 and 28 April 1943 Doran made three voyages from New York and Norfolk to arrive at Oran on 22 June, and on 5 July got underway to Casablanca.

She returned to New York 22 August and made one convoy voyage to Liverpool from 6 October to 1 November before sailing to the Panama Canal Zone as escort for the aircraft carrier Randolph.

From 13 January to 26 April 1945 Doran escorted two convoys to Oran, then at Charleston, South Carolina, began conversion to a high-speed minesweeper.

Her conversion and shakedown completed, she sailed from Norfolk 2 July for a month of training at San Diego, called at Pearl Harbor, and reached Okinawa on 7 October.

Doran remained on duty in Japanese waters until 11 March when she sailed from Yokosuka for San Francisco, arriving the last day of the month.