Distributed Systems Group - University of Duisburg-Essen is a software developer for Windows.
It is reported that the following Windows processes are part of CrypTool 2.1 (Nightly Build 6418.1):
If you want to remove CrypTool 2.1 (Nightly Build 6418.1) from your computer, just go to Start > Control Panel > Add/Remove programs and select CrypTool 2.1 (Nightly Build 6418.1) from the list of programs.