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Validation disclaimer: TTP overlap, actor similarity, generated summaries, and coverage findings are investigation leads, not attribution proof or operational validation without analyst review.

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G0138 · 12 ATT&CK techniques · 0 correlated reports

Andariel

Aliases: Andariel, Onyx Sleet, PLUTONIUM, Silent Chollima

[Andariel](https://attack.mitre.org/groups/G0138) is a North Korean state-sponsored threat group that has been active since at least 2009. [Andariel](https://attack.mitre.org/groups/G0138) has primarily focused its operations--which have included destructive attacks--against South Korean government agencies, military organizations, and a variety of domestic companies; they have also conducted cyber financial operations against ATMs, banks, and cryptocurrency exchanges. [Andariel](https://attack.mitre.org/groups/G0138)'s notable activity includes Operation Black Mine, Operation GoldenAxe, and Campaign Rifle.(Citation: FSI Andariel Campaign Rifle July 2017)(Citation: IssueMakersLab Andariel GoldenAxe May 2017)(Citation: AhnLab Andariel Subgroup of Lazarus June 2018)(Citation: TrendMicro New Andariel Tactics July 2018)(Citation: CrowdStrike Silent Chollima Adversary September 2021) [Andariel](https://attack.mitre.org/groups/G0138) is considered a sub-set of [Lazarus Group](https://attack.mitre.org/groups/G0032), and has been attributed to North Korea's Reconnaissance General Bureau.(Citation: Treasury North Korean Cyber Groups September 2019) North Korean group definitions are known to have significant overlap, and some security researchers report all North Korean state-sponsored cyber activity under the name [Lazarus Group](https://attack.mitre.org/groups/G0032) instead of tracking clusters or subgroups.

Open interactive actor investigation

ATT&CK techniques

T1005T1027.003T1049T1057T1105T1189T1203T1204.002T1566.001T1588.001T1590.005T1592.002

Correlated CTI and IR reports

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Attack tools, simulations and detection rules

Follow explicit source relationships into the reference modules. Linked procedures and detectors are not claims of live validation or actor attribution.

T1005 Data from Local System simulation — Exact active technique ID
T1005 detection rules — Exact active technique ID; not actor-specific detector coverage
T1027.003 Steganography simulation — Exact active technique ID
T1027.003 detection rules — Exact active technique ID; not actor-specific detector coverage
T1049 System Network Connections Discovery simulation — Exact active technique ID
T1049 detection rules — Exact active technique ID; not actor-specific detector coverage
T1057 Process Discovery simulation — Exact active technique ID
T1057 detection rules — Exact active technique ID; not actor-specific detector coverage
T1105 Ingress Tool Transfer simulation — Exact active technique ID
T1105 detection rules — Exact active technique ID; not actor-specific detector coverage
T1189 Drive-by Compromise simulation — Exact active technique ID
T1189 detection rules — Exact active technique ID; not actor-specific detector coverage
T1203 Exploitation for Client Execution simulation — Exact active technique ID
T1203 detection rules — Exact active technique ID; not actor-specific detector coverage
T1204.002 Malicious File simulation — Exact active technique ID
T1204.002 detection rules — Exact active technique ID; not actor-specific detector coverage
T1566.001 Spearphishing Attachment simulation — Exact active technique ID
T1566.001 detection rules — Exact active technique ID; not actor-specific detector coverage
T1588.001 Malware simulation — Exact active technique ID
T1588.001 detection rules — Exact active technique ID; not actor-specific detector coverage
T1590.005 IP Addresses simulation — Exact active technique ID
T1590.005 detection rules — Exact active technique ID; not actor-specific detector coverage
T1592.002 Software simulation — Exact active technique ID
T1592.002 detection rules — Exact active technique ID; not actor-specific detector coverage

Cyber Knowledge routes

These contextual routes explain behaviors associated with this ATT&CK group record. They support learning and investigation planning; they do not add attribution evidence.