There is a longer article [1] describing the attack, but it is in German and behind a paywall.
[1] https://www.heise.de/hintergrund/c-t-deckt-auf-Keylogger-nut...
57 karma · joined May 28, 2016
[1] https://www.heise.de/hintergrund/c-t-deckt-auf-Keylogger-nut...
[0] http://bigbash.it or the corresponding Github repo.
Give it a try: http://bigbash.it
Disclaimer: I am the main author.