Anthony Laurie was found seriously injured by police officers called to an incident in the North Lanarkshire town's Glenhove Road at about midnight on Thursday.
Mr Laurie, who was from the Kildrum area of Cumbernauld, was taken to Monklands Hospital but later died.
Police have appealed for anyone who saw him on Thursday to get in touch.
Det Ch Insp Laura Mcluckie said: "My officers have been conducting door to door inquiries and viewing CCTV in an attempt to identify the person or persons responsible for Mr Laurie's death.
"We are also trying to track his movements on the day of Thursday and would like to speak to anyone who had seen him prior to midnight.
"He is described as 25 years of age, 5ft 10in, medium build, short brown receding hair, brown eyes and was wearing a navy Lacoste tracksuit, royal blue polo shirt, and black Nike trainers.
"I am also keen to speak to anyone who was in the vicinity and witnessed a disturbance at Glenhove Road shortly before midnight on Thursday 1 October."
A murder inquiry has been launched after a 25-year-old man died following a disturbance in Cumbernauld.