Chowrasia, who had even par 72 in each of the first three rounds, had three birdies and two bogeys for a one-under 287 total for four days.
Jeev Milkha Singh slipped down from overnight 25th place to 42nd after a nightmarish four-over 40 on front nine. He carded three-over 75 and finished at one-over 289.
Anirban Lahiri (68) had his best round of the week at four-under with four birdies and an eagle against two bogeys. His second nine, the front side of the Tseleevo Golf Club, had three birdies and an eagle and no bogeys.
Meanwhile, Michael Hoey romped to a four shot victory as he sealed a fifth European Tour title. The Northern Irishman started the day with a four shot lead after a brilliant third round 65.
On the final day, a closing two-under 70 was enough to give Hoey a 16-under par total and four shot winning margin over France's Alexandre Kaleka (68) and England's Matthew Nixon (69).
Chowrasia, who has made eight cuts in 15 starts, said, "I am happy that I was consistent this week in that I did not go over par on any of the four days. That was despite a big number in each of the first three rounds, when I had two doubles and one triple. I feel I am getting closer to the form that I have been striving for.
