Calisto - S0274 (b8fdef82-d2cf-4948-8949-6466357b1be1)
Calisto is a macOS Trojan that opens a backdoor on the compromised machine. Calisto is believed to have first been developed in 2016. (Citation: Securelist Calisto July 2018) (Citation: Symantec Calisto July 2018)