It was Dumba's first goal in 34 games since Nov. 12, when he scored against the Los Angeles Kings.
"Obviously, it was good scoring in OT but it'd kind of been a long time coming," the defenseman said. "This feels good. I was trying not to think about it but now getting it, yeah, it felt awesome."
WATCH: [All Blackhawks vs. Wild highlights]
Kevin Fiala scored two goals, and Alex Stalock, in his career-high 24th start, made 27 saves for Minnesota (23-22-6). The Wild are six points behind the Calgary Flames for the second wild card into the Stanley Cup Playoffs from the Western Conference.
Olli Maatta and Adam Boqvist scored, and Corey Crawford made 31 saves for Chicago (25-21-7), which is three points behind the Flames for the second wild card from the Western Conference. Patrick Kane of the Blackhawks had his point streak ended at 12 games. He had 18 points (five goals, 13 assists) during the run.
"I think it's been awhile since we played that poorly," Blackhawks coach Jeremy Colliton said. "[Minnesota] had an urgency and desperation to their game that we didn't match in the beginning. I thought [Crawford] stood on his head, gave us a chance."
Fiala made it 1-0 at 3:53 of the second period with a shot from the high slot.