[Fysbis](https://attack.mitre.org/software/S0410) is a Linux-based backdoor used by [APT28](https://attack.mitre.org/groups/G0007) that dates back to at least 2014.(Citation: Fysbis Palo Alto Analysis)
Actors that use this
0 tracked actors
No tracked actor uses this yet
Not linked to any of our tracked MENA actors in actor_software — still browsable via the ATT&CK dictionary above.