World No. 35 Kirilenko faced no difficulty in outplaying an erratic rival to clinch her third WTA Tour singles title.
"It's been a great week. I didn't expect the final to be so easy," said Kirilenko, whose last singles title win was in 2005.
The 164th-ranked Koryttseva, a first-time singles finalist, was broken on three successive serves of the opening set, but started strongly in the second set to lead 2-0 after breaking Kirilenko in the first game.
Kirilenko then took six straight points to dash Koryttseva's hopes.
"I made too many errors and failed to be competitive," Koryttseva said.