It is the third straight quarter when the bank reported net loss.
The bank had posted a profit of Rs 241.10 crore in April-June of 2016-17.
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Total income in the June quarter was Rs 6,730.88 crore, down from Rs 8,219.43 crore a year earlier, it said in a regulatory filing.
Gross non-performing assets (NPAs) soared to Rs 50,173.20 crore, or 24.11 per cent, in the first quarter of 2017-18, from Rs 27,275.15 crore in the year-ago period.
Net NPA was 15.8 per cent, up from 7.47 per cent in the year-ago quarter.
The stock closed at Rs 52.45, down 0.57 per cent from its previous close, on the BSE on Monday.