[Sardonic](https://attack.mitre.org/software/S1085) is a backdoor written in C and C++ that is known to be used by [FIN8](https://attack.mitre.org/groups/G0061), as early as August 2021 to target a financial institution in the United States. [Sardonic](https://attack.mitre.org/software/S1085) has a plugin system that can load specially made DLLs and execute their functions.(Citation: Bitdefender Sardonic Aug 2021)(Citation: Symantec FIN8 Jul 2023)