Adversaries can perform command and control between compromised hosts on potentially disconnected networks using removable media to transfer commands from system to system.(Citation: ESET Sednit USBStealer 2014) Both systems would need to be compromised, with the likelihood that an Internet-connected system was compromised first and the second through lateral movement by [Replication Through Removable Media](https://attack.mitre.org/techniques/T1091). Commands and files would be relayed from the disconnected system to the Internet-connected system to which the adversary has direct access.
Communication Through Removable Media
source_name: mitre-attack  url: https://attack.mitre.org/techniques/T1092  external_id: T1092     source_name: ESET Sednit USBStealer 2014  description: Calvet, J. (2014, November 11). Sednit Espionage Group Attacking Air-Gapped Networks. Retrieved January 4, 2017.  url: http://www.welivesecurity.com/2014/11/11/sednit-espionage-group-attacking-air-gapped-networks/     