The Indian equity benchmarks moved lower on Thursday mirroring losses in global markets ahead of weekly expiry of index futures and option contracts. The Sensex fell as much as 405 points and Nifty 50 index touched an intraday low 17,712. HDFC, HDFC Bank, Infosys, Reliance Industries, Tata Consultancy Services and Larsen & Toubro were among the top drags on the Sensex, data from BSE showed.