[metaMain](https://attack.mitre.org/software/S1059) is a backdoor used by [Metador](https://attack.mitre.org/groups/G1013) to maintain long-term access to compromised machines; it has also been used to decrypt [Mafalda](https://attack.mitre.org/software/S1060) into memory.(Citation: SentinelLabs Metador Sept 2022)(Citation: SentinelLabs Metador Technical Appendix Sept 2022)