Malian forward Souleymane Diabate netted the lone goal for the traditional black and white team.
With the feat, Dhaka Mohammedan have secured five points from three matches of the four-team Group D with one win and two draws while Uttar Baridhara returned home empty-handed.
Bangladesh Championship League (BCL) runners-up Uttar Baridhara SC got the blow while their defender made a blunder near the box.
Malian forward Diabate made no mistake to send the ball home with a long-range right-footed grounder from outside the box in the 8th minute (1-0).
After taking a 1-0 lead, Dhaka Mohammedan started to dominate over Uttar Baridhara with an attacking football, but failed to widen the margin.
In the 39th minute, the BCL runners-up missed two consecutive chances to level the margin.
Dhaka Mohammedan also got a chance to widen the margin but a shot from Nigerian midfielder Ugochukwu Obi Moneke was denied by Uttar Baridhara goalkeeper Azad Hossen.
Dhaka Mohammedan Limited: Stanley Onye Kachi Amadi, Habibur Rahman Sohag, Souleymane Diabate, Yousuf Sifat, Md Atikuzzaman, Ugochukwu Obi Moneke, Md Mithu, Uryu Nagata, Sayed Rakib Khan Evan, Amir Hakim Bappy, Md Hossain Suzan.
Uttar Baridhara Sporting Club: Aminul Islam Milon, Shahidul Islam Shapon, Samin Yasir Juel, Papon Singh, Arif Hossen, Noyon Mia, Azad Hossen, Apurba Das,Jobayed Hasan Jikon, Md Sohel, Simon Obiomachukwu Ezeodika, Sangare Issouf.