HONG KONG (Standard&Poor's) Jan. 30, 2013--Standard&Poor's Ratings Services said today that it has assigned its 'A-' rating to Woori Bank's (Woori; A-/Stable/A-2) ¥24.3 billion senior unsecured bonds with a coupon rate of 0.77% due Feb. 5, 2015, and its ¥5.7 billion senior unsecured bonds with a coupon rate of 0.87% due Feb. 5, 2016. Woori intends to use the bond proceeds to repay maturing bonds. The bonds will constitute direct, unconditional, unsecured, and unsubordinated obligations of the bank. They will rank pari passu with all other unsecured and unsubordinated obligations of the bank. RELATED CRITERIA AND RESEARCH Woori Bank, Dec. 20, 2012 Banking Industry Country Risk Assessment: Korea, April 19, 2012 Banks: Rating Methodology And Assumptions,