I finally found a list of restaurants that are participating in this event, which is coordinated by the Malden Chamber of Commerce. A portion of the proceeds go to benefit the Bread of Life, a local food-pantry and meals organization.
It looks like a few non-Malden businesses will be participating. I didn't make it to last year's event but I heard they had a great turnout. I'm looking forward to it - there's a big parking lot at the Irish-American Club so they should be able to get it plowed out in time!