Following a major crash on Thursday, Indian equity benchmark indices opened in green on Friday. Notably, investors lost about Rs 13 trillion in a day after Sensex crashed over 2,400 points on Thursday. The positive opening on Friday comes after oil prices declined slightly. Brent's May future contract was trading 2.61 per cent down at $105.80 per barrel. Overnight, the US markets fell. Later, the Asian markets also witnessed a decline at the start, but edged higher after oil prices retreated. Meanwhile, the rupee dropped to an all-time low of 93 against the US dollar.