Niklas Hjalmarsson followed with another tally 1 1/2 minutes later and Marian Hossa iced the Blackhawks' sixth straight victory with an empty-netter.
Hossa added two assists while Jonathan Toews chipped in with a goal and a helper for top-seeded Chicago, which improved to 33-5-4 (70 points).
Ray Emery earned the win 16 saves.
Jamie Benn supplied both goals for Dallas, which remained two points out of the Western Conference's eighth and final post-season slot after falling for the first time in six contests.
Richard Bachman made 23 stops for the Stars.
Justin Bieber crashes Drake Bell's album release party
Members of Congress to keep receiving porn magazine