From what i understand this is just some guy who took the original and slightly modified it. Just a lamer copycat
This is a correct statement.
The group that discovered the bug was very discreet once they released their advisory (when MS released the patch).
The blaster was merely a copy and paste with slight modifications like you said. That is why I think the person responsible should be punished to the fullest extent of the law. The group that discovered the bug acted responsible, the person that released the worm acted like a retard.