THREATOPS Actor Dossier
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AppleJeus

G10491 reports
aliases · AppleJeus · Gleaming Pisces · Citrine Sleet · UNC1720 · UNC4736
Export dossier:
1
Reports
12
Techniques
6
Tactics
5
Countries
67%
Hunt coverage
5
Aliases

Analyst assessment — key judgments

  • Signature techniques: T1588.007 (Artificial Intelligence), T1590.005 (IP Addresses), T1195.001 (Compromise Software Dependencies and Development Tools).
  • Primary targeting: RU, KR, FR, BR.
  • Activity declining: 0 report(s) in last 30d vs 1 prior (-100%).
  • Hunt coverage 67% of 12 observed techniques (4 gap(s)).
  • Assessment confidence: medium (60).

Activity & trend

DecliningLast 30d: 0 vs 1 prior (-100%)· first reported 2026-07-30 · last 2026-07-30
0
7d
0
30d
1
90d
1
All
0.1
Rpts/wk
Reporting timeline · 12 months

Movement — last 30 days

Targeting lost
BRFRKRRUTR

Overview

Analyst triage
Intelligence summary

AppleJeus is a North Korean state-sponsored threat group attributed to the Reconnaissance General Bureau. Associated with the broader Lazarus Group umbrella of actors, AppleJeus 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 primarily targets the cryptocurrency industry and is most notably responsible for the 3CX Supply Chain Attack.(Citation: Mandiant 3cx UNC4736 2023) The group traditionally deploys malicious cryptocurrency software in combination with Phishing. 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)

Top co-occurring indicators
    Aliases & naming
      Targeting · countries
        Targeting · named victims

          ATT&CK technique matrix

          Coverage vs hunt library:
          Hunt-coverage gaps — prioritized

            Top techniques by observation

            Threat catalogue · engineering roadmap0

            Flagged detection-engineering queue

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              Infrastructure

              IOC type mix
              Tooling / malware families
                Tracked infrastructure

                Relationships

                Related actors (behavioral cluster)
                  Attributed malware
                  Campaigns
                  No behavioral cluster, attributed malware, or campaigns recorded for this actor yet.

                  Activity

                  30-day mention timeline
                  Recent reporting
                  TitleSourceSeverityCollected