Stegomalware is a type of malware that uses steganography to hinder detection. This type of malware operates by building a stegosystem to hide a malicious component within its resources and then extracts and executes them dynamically. It is considered one of the most sophisticated and stealthy ways of obfuscation.
The concept of Stegomalware was first introduced by researchers in the context of mobile malware and presented at Inscrypt conference in 2014
The use of steganography in malware was first applied to botnets communicating over probabilistically unobservable channels and the extended to other components of malware engineering such as return-oriented programming and compile-time obfuscation, among others.
References
Stegomalware Wikipedia(Text) CC BY-SA