This whitepaper is an analysis of the breach into the Kudankulam Nuclear Power Plant through the lens of Cyber Kill Chain, the study of remote access trojans, and the targeting of critical infrastructure.
You can download it from the following link: https://packetstormsecurity.com/files/download/156344/rat_in_the_shell.pdf
Source: https://packetstormsecurity.com/files/156344/The-R.A.T-In-The-Shell.html