The bank had posted a loss of Rs 384.83 crore in the July-September period of the previous fiscal.
Total income of the bank decreased to Rs 3,757.51 crore during the quarter under review, from Rs 4,941.41 crore over the same period of 2016-17.
For quarter under review, UCO Bank's provision for bad loans jumped to Rs 1,323.36 crore as against Rs 980.03 crore a year ago.
Asset quality slipped further during the period with gross non-performing assets (NPAs) rising to 19.7 per cent of gross advances as of September 2017, up from 16.51 per cent a year ago.