Shamoon is wiper malware that was first used by an Iranian group known as the "Cutting Sword of Justice" in 2012. Other versions known as Shamoon 2 and Shamoon 3 were observed in 2016 and 2018. Shamoon has also been seen leveraging RawDisk and Filerase to carry out data wiping tasks.

Analysis has linked Shamoon with Kwampirs based on multiple shared artifacts and coding patterns. The term Shamoon is sometimes used to refer to the group using the malware as well as the malware itself.