AppleJeus
AppleJeus is a North Korea-aligned threat actor tracked under aliases including Citrine Sleet, UNC4736, Gleaming Pisces, and Labyrinth Chollima. Multiple sources in the content describe it as a DPRK state-affiliated group, and Mandiant is cited as assessing with high confidence that UNC4736 operates with a DPRK nexus and is aligned with the Reconnaissance General Bureau (RGB). The content also notes Microsoft’s North Korea naming family 'Sleet' and references Microsoft reporting on Citrine Sleet exploiting a Chromium zero-day in 2024. The actor is strongly associated with financially motivated operations targeting the cryptocurrency and decentralized finance ecosystem. The content states that AppleJeus/Citrine Sleet has targeted cryptocurrency organizations and developers since at least 2018 or 2022 using trojanized cryptocurrency trading applications, social engineering, and supply-chain style access operations. Reported victimology and incidents in the content include the 3CX software supply-chain compromise, the October 2024 Radiant Capital theft, and the April 2026 Drift Protocol theft. In the Radiant case, Mandiant attributed the attack to UNC4736/AppleJeus/Citrine Sleet and reported use of the INLETDRIFT macOS backdoor delivered through a Telegram impersonation lure to compromise hardware-wallet signers. In the Drift case, multiple reports cited in the content attribute the operation with medium or medium-high confidence to UNC4736/AppleJeus/Citrine Sleet, describing a six-month social-engineering campaign involving fake quantitative trading personas, in-person meetings, Telegram engagement, a possible malicious code repository, and a trojanized TestFlight wallet application to compromise multisig signing workflows. The content also links AppleJeus to developer- and supply-chain-focused tradecraft. During the 3CX supply-chain attack, AppleJeus reportedly used the COLDCAT C2 over HTTPS with data hidden in cookie headers, leveraged a GitHub repository hosting icon files containing the C2 URL, used ICONICSTEALER to collect browser information including browser history, and exploited Chrome vulnerability CVE-2022-0609 via a drive-by compromise website. Separate reporting in the content links Gleaming Pisces/UNC4736 with poisoned PyPI packages delivering PondRAT and new Linux/macOS POOLRAT variants as part of Operation Dream Job-style activity, with Unit 42 assessing the objective as compromising developers and supply-chain vendors. The content further notes overlap with AppleJeus-related infrastructure such as Celas Trade Pro via celasllc[.]com. Overall, the content portrays AppleJeus as a DPRK state-affiliated, cryptocurrency-focused intrusion cluster engaged in social engineering, trojanized trading software, malicious developer tooling and packages, supply-chain compromise, browser data theft, and C2 concealment over common web services and HTTPS.
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Tradecraft
53 distinct techniques observed across reporting, grouped by tactic. Hover any cell for the evidence excerpt; click through for MITRE's full description.
Associated malware families
10 malware families attributed to this actor across reporting.
5 additional families tracked in Mallory.
Observables
20 indicators attributed to this actor: domains, IPs, hashes, and other artifacts pulled from reporting. View more in app.
Recent activity
20 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
North Korea-aligned activity targeting cryptocurrency and decentralized finance organizations and developers through trojanized cryptocurrency trading applications.
Attributed to the October 2024 compromise of Radiant Capital, in which attackers compromised hardware-wallet signers via the INLETDRIFT macOS backdoor delivered through Telegram impersonation, enabling takeover of the Pool Provider contract and theft of funds.
North Korean threat group using prolonged social engineering operations to steal large sums from cryptocurrency trading platforms.
Conducted a long-running social engineering and infiltration operation against Drift contributors, obtained multisig pre-approvals, and enabled the theft of approximately $285 million from the protocol.
The version that knows your environment.
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.