H3XA — Operational Evidence

TypeMalware

External ID—

First seen2026-08-14

Last seen2026-08-14

Confidence

—

[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)

Labels

malware

11 recorded

Relationships

uses

from APT28

Group

uses

to Credentials from Web Browsers

Technique

uses

to File and Directory Discovery

Technique

uses

to File Deletion

Technique

uses

to File Transfer Protocols

Technique

uses

Technique

uses

Technique

uses

to Process Discovery

Technique

uses

to Screen Capture

Technique

uses

to System Information Discovery

Technique

uses

to System Owner/User Discovery

Technique

5 external

References

mitre-attack

S0161

XAgentOSX

—

OSX.Sofacy

—

XAgentOSX 2017

https://researchcenter.paloaltonetworks.com/2017/02/unit42-xagentosx-sofacys-xagent-macos-tool/

Symantec APT28 Oct 2018

https://www.symantec.com/blogs/election-security/apt28-espionage-military-government