Threat Actor

AppleJeus

Also known as: AppleJeus, Gleaming Pisces, Citrine Sleet, UNC1720, UNC4736

[AppleJeus](https://attack.mitre.org/groups/G1049) is a North Korean state-sponsored threat group attributed to the Reconnaissance General Bureau. Associated with the broader [Lazarus Group](https://attack.mitre.org/groups/G0032) umbrella of actors, [AppleJeus](https://attack.mitre.org/groups/G1049) has been active since at least 2018 and is closely aligned in resources with TEMP.hermit, another DPRK-affiliated group under the same umbrella.(Citation: dtex DPRK 2025 structure ITworkers) The group’s primary mission is to generate and launder revenue to provide financial support to the government. [AppleJeus](https://attack.mitre.org/groups/G1049) primarily targets the cryptocurrency industry and is most notably responsible for the [3CX Supply Chain Attack](https://attack.mitre.org/campaigns/C0057).(Citation: Mandiant 3cx UNC4736 2023) The group traditionally deploys malicious cryptocurrency software in combination with [Phishing](https://attack.mitre.org/techniques/T1566). From these compromised environments, it selectively deploys additional backdoors to enable extended operations against high-value financial targets.(Citation: Mandiant DPRK Groups 2023)(Citation: JPCert Blog Laz Subgroups 2025)

2
Techniques
1
Campaigns

Properties

stix_id
intrusion-set--14225573-63b5-4e50-ba9a-5fdcaf6a7b4c
signal_observed_at
2026-09-11T17:54:59+00:00
type
intrusion-set

MITRE ATT&CK Techniques (2)

Financial Theft

Adversaries may steal monetary resources from targets through extortion, social engineering, technical theft, or other methods aimed at their own fina

Phishing

Adversaries may send phishing messages to gain access to victim systems. All forms of phishing are electronically delivered social engineering. Phishi

Campaigns (1)

3CX Supply Chain Attack

The [3CX Supply Chain Attack](https://attack.mitre.org/campaigns/C0057) was the first publicly reported case of one supply chain compromise triggering

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