Particle cube

So, I'm making a mod, and in general, it doesn't matter which one, but I want to make a special technique in it: creating a cube in which enemies will take damage, the creation of the cube itself is understandable, but there is a problem with the fact that players should see the cube to damage could be avoided, so I want to know if it is possible to create particles around the perimeter of the cube, I saw one user make a tutorial on a circle, but I need a cube.
In general, I need a procedure for creating a cube of particles, inside which you can do something with entities. help