S0161XAgentOSX

[XAgentOSX](https://attack.mitre.org/software/S0161) is a trojan that has been used by [APT28](https://attack.mitre.org/groups/G0007) on OS X and appears to be a port of their standard [CHOPSTICK](https://attack.mitre.org/software/S0023) or XAgent trojan. (Citation: XAgentOSX 2017) Documented platforms: macOS. Attributed to ATT&CK group: APT28. Catalogued in ATT&CK 14.1. 3 references curated.