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Citrine Sleet is a North Korean state-linked, financially motivated threat actor associated with the Lazarus ecosystem and focused on financial institutions, cryptocurrency businesses, and decentralized finance organizations. Associated tracking names include AppleJeus, Gleaming Pisces, UNC1720, UNC4736, Storm-0139, and Storm-1222. These designations cover overlapping activity within the broader North Korean financial cybercrime ecosystem. The actor uses social engineering and malicious software distribution to compromise cryptocurrency-sector personnel and organizations. Its operations have included impersonating trading-company employees on Telegram, directing targets to counterfeit meeting-scheduling services, and distributing trojanized cryptocurrency software. Citrine Sleet has exploited Chromium vulnerability CVE-2024-7971 in a chain involving CVE-2024-38106 to deploy the FudModule rootkit. Linked intrusions have used PerfhLoader, PondRAT, POOLRAT, ThemeForestRAT, and RemotePE. The toolset includes implants for Windows, Linux, and macOS, credential and browser-cookie collection, keylogging, screenshot capture, remote command execution, and network reconnaissance. Persistence mechanisms include phantom DLL hijacking and Windows services. Operations have also used a vulnerable driver associated with CVE-2017-16237 to obtain SYSTEM privileges. In-memory payload loading, process injection, encrypted loader chains, timestomping, and secure artifact deletion support defense evasion. Extended compromises have involved months of surveillance and credential collection, followed by replacement of earlier implants with more protected payload chains.
Mallory correlates actor tradecraft and target patterns against your stack, your sector, and your geography. See overlap before they land.
Who, where, and (when attributed) which flag flies behind the operation. Pulled from open-source reporting and Mallory's analyst review.
Sectors the actor has been observed targeting.
Geographies tied to known operations.
Attributed origin per open-source reporting.
54 distinct techniques observed across reporting, grouped by tactic. Hover any cell for the evidence excerpt; click through for MITRE's full description.
11 malware families attributed to this actor across reporting.
6 additional families tracked in Mallory.
2 CVEs this actor has used in observed campaigns. 2 of them exploited in the wild.
On August 19, 2024, Microsoft identified a North Korean threat actor exploiting a Chromium remote-code-execution (RCE) zero-day vulnerability ( CVE-2024-7971 )... Microsoft noted that Citrine Sleet used Chromium exploit to deploy a FudModule rootkit.
The RCE vulnerability was used to deploy a shellcode containing another exploit ( CVE-2024-38106 ) that was used to escape Chromium’s sandbox and deploy the downloaded FudModule rootkit into the memory.
20 indicators attributed to this actor: domains, IPs, hashes, and other artifacts pulled from reporting. View more in app.
20 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Sous-cluster Lazarus menant des opérations à motivation financière.
One of six clusters into which the former North Korean Lazarus umbrella was categorized.
A DPRK-nexus Lazarus-derived sub-cluster identified in the report's revised clustering of North Korean activity.
Match sector + geo + tech-stack targeting against your real footprint.
Every observed MITRE ATT&CK technique, grouped by tactic.
Families this actor is known to deploy, with IOCs and behavior.
CVEs this actor has used in known campaigns.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Domains, IPs, and hashes tied to this actor, refreshed continuously.