Malware is designed to launch distributed denial-of-service (DDOS) attacks from infected computers. Java-Bot is exploiting a previously known critical Java vulnerability CVE-2013-2465 that was patched in last June. Malware uses PricBot an open framework for implementing communication via IRC, then report to an Internet relay chat (IRC) channel that acts as a Command-and-control server. The malware authors usedObfuscator (encryption) to make the analysis more difficult. It creates a separate key for the classes developed due to which analysis of all classes has to be done to get the decryption keys.
Source: https://thehackernews.com/2014/01/java-bot-cross-platform-malware.html