Is the leak around the base of the filter or is is from around the oil filter adapter to block? I don't know what you are mean by square filter, explain?
Oil filters are normally screwed on hand tight. The instructions should be on the filter. The oil filter to block adapter uses a sealing ring in a recessed grove in the block. The center bolt attaching it to the block has a sealing ring around the bolt head. Either place can leak. Tightening probably will not stop the leak. Try replacing the seals. Make sure the old seal is removed from the grove. Don't use a sealer on the new seal. The center bolt torque specifications aren't in the manual but the old style filter using the same type ring specified a torque of 15 lb. ft.
Clifton