https://threatpost.com/en_us/blogs/jboss-worm-exploiting-old-bug-infect-unpatched-servers-102111
Worm uses bug in jmx-console to execute shell code, then it installs perl-based control daemon that connects to IRS, and tries to discover other JBoss’es near by by using jgroups UDP multicast. Here is more details, including the source code http://pastebin.com/U7fPMxet