"It was so sketchy trying to come through the field, and when eventually I got to the front group I just decided to sit there for a couple of laps and then see how it was," explained Binder.
"I knew I could probably be a good 0.5s quicker than the guys so I just put my head down with five laps to go and tried to go into the distance."
"I knew even starting last with my rhythm I could definitely fight for a podium. Today is a great day for me for my country and I cannot thank my team enough. Just starting last made the first victory sweeter."
Breakthrough after chassis change last year
Binder has been a full-timer in Moto3 since 2012, but the 20-year-old only collected two podium finishes in his first three years.
He added a further four to his tally last year on his way to sixth in the standings in his first year with the Red Bull-backed Ajo team.
He was on the podium in the three opening races of 2016 before finally earning his maiden victory, at Jerez, and now leads the championship by 15 points over Jorge Navarro.
"The step really didn't come over the winter, it came at the end of the last season when we brought in a new chassis and since then I've been really shining in all the races," Binder added.
"This year it just all came down to hard work, in the off-season I didn't really take a break, training the whole way through so I'm in the best possible condition I can be.
"My team is incredible, such great people around me that makes life a lot easier."