The 23-year-old Toro Rosso driver finished ninth in Yeongam, despite starting from 21st on the grid after a driveshaft issue in qualifying led to the team having to break the seal on his gearbox, incurring a five-place penalty.
The Australian was also hindered by a brake problem during the closing stages, and had to surrender a potential eighth place to team-mate Jean-Eric Vergne.
But another top-10 finish, his fourth in five races, is a sign of the progress being made by the Perth-born racer, and he is already looking forward to the next race in India in two weeks' time.
He said: "I hope we can carry this on. We have been doing it when maybe others have had a bit of bad luck, but it could have been even better.
"We lost points at the last corner in Monza and we lost eighth here and missed out on better points.
"We have got something going right now. I am racing really well and I am happy with my performances, so I am definitely confident for India, and it's a good circuit too."
Ricciardo was worried he might not even finish when his brake problem struck, giving him a scary moment on the high-speed approach to turn three as it sent him veering off into the large run-off area.
Having recovered he allowed Vergne through, but was concerned the McLaren of Lewis Hamilton would also catch him, only for the Briton to pick up a loose piece of synthetic turf and drop back from him.
But, despite missing out on a career-best result, he takes great heart from the fact he was able to keep pace with the Lotus of Romain Grosjean prior to his brake issue.
He said: "In pure performance this was our best weekend for a long time.
"[Jenson] Button and [Nico] Rosberg went off in the first few corners which made our positions look better but I was studying the times after the race and up until the problem I was getting quicker and quicker and I had just set my best lap of the race.
"Grosjean was seven or eight seconds in front and he faded a bit towards the end so if we did not have the problem we would have been close to Grosjean, and finishing close to a Lotus goes a long way for us in saying we have improved."