For my Malware Research I need samples of the following two kinds of Malware (description from Peter Szor's book). Please give me the names or samples of any of them,
Octopus
An octopus is a sophisticated kind of computer worm that exists as a set of programs on more than one computer on a network.For example, head and tail copies are installed on individual computers that communicate with each other to perform a function.
Rabbits
A rabbit is a special computer worm that exists as a single copy of itself at any point in time as it "jumps around" on networked hosts.
Please don't post anything related to "How to write such kind of malware" because it is very easy to implement these kind of malware. What I need to know is that whether they had been actually written or is it just a myth. And if they were written then post the names or samples of any such kind of malware.
Thanks.