One of the largest threats to network security in Internet-connected corporate networks is attack via worms. Worms infiltrate the network and compromise security, consuming processor cycles and network bandwidth that would otherwise be available for corporate use. This research analyses a particular strain of network worm called the "Ethical worm", which is targeted towards beneficial means rather than malicious. Also presented is a design for an Ethical worm generation toolkit (named WEWorm) that will aid System administrators in the cleanup of an infected network.