Malware
Book of Eli
This in .Net written malware is a classic information stealer.
Book of Eli is a Windows malware family.
Background
Written in .Net, this malware is a classic information stealer. It is capable of gathering a range of data and can be deployed in various configurations: "The full-featured version of the malware can log keystrokes, collect profile files of Mozilla Firefox and Google Chrome browsers, record sound from the microphone, grab desktop screenshots, capture photo from the webcam, and collect information about the version of the operation system and installed anti-virus software." (ESET) The malware has been operational since at least 2012.
Source: Malpedia (Fraunhofer FKIE).