ICICI Bank today reported a 23.64% increase in net profit at Rs 640.08 crore for the third quarter ended December 31, 2005 when compared with Rs 517.68 crore in Q3FY05.According to a release issued by the bank to the BSE today, total income increased to Rs 4,762.78 crore in Q3FY06 from Rs 3,269.09 crore in Q3FY05.