D
CyberNorth Korea

Moonstone Sleet

State-sponsored cyber threat groupTrackedPending verification

Also known as: Storm-1789

CyberPRK
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Fact cardConfidence · Source
System
TypeState-sponsored cyber threat group
Alternative designationsStorm-1789
ProliferationOrigin country only
Active since2023At least 2023Med[1]
MITRE ATT&CK IDG1036High[1]
Capabilities
ATT&CK techniques used30ATT&CK v20.1High[1]
Malware and toolsQilin1 malware and tool entries linked in ATT&CKHigh[1]
Attribution and activity
Attributed sponsorNorth Korean-linkedHigh[1]
Notes
Moonstone Sleet is a North Korean-linked threat actor executing both financially motivated attacks and espionage operations. The group previously overlapped significantly with another North Korean-linked entity, Lazarus Group, but has differentiated its tradecraft since 2023. Moonstone Sleet is notable for creating fake companies and personas to interact with victim entities, as well as developing unique malware such as a variant delivered via a fully functioning game. Description adapted from MITRE ATT&CK®, © The MITRE Corporation, used under the ATT&CK Terms of Use.
Summary

Moonstone Sleet is a North Korean-linked threat actor executing both financially motivated attacks and espionage operations. The group previously overlapped significantly with another North Korean-linked entity, Lazarus Group, but has differentiated its tradecraft since 2023.

Draft entry. Values come from the cited public sources and are awaiting editor verification.
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Operators
North Korea
Sources
  1. Moonstone Sleet, Group G1036, MITRE ATT&CK
    Published/updated 2026-07-31 · Tier 2 · checked 2026-11-08
Change log
  • 2026-11-08 Entry created from MITRE ATT&CK Enterprise v20.1 (group G1036)