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puNK-004 is a suspected North Korea-linked threat cluster tracked under the broader puNK designation for unidentified DPRK-associated activity. The cluster has been associated with DocSwap, an Android malware family masquerading as a Korean-language document-viewing authentication application and assessed as likely targeting mobile users in South Korea. The operation shows overlap in infrastructure characteristics with phishing activity previously associated with Kimsuky, but the actor is tracked separately as puNK-004. DocSwap is designed for Android compromise and post-compromise surveillance. It decrypts an embedded component, dynamically loads additional code, and establishes persistence through foreground-service execution and boot-triggered startup. The malware abuses Android accessibility services to conduct keylogging and supports broader information theft and device surveillance functions, including file transfer, camera access, and audio recording. It also supports remote tasking through a substantial command set delivered over socket-based command-and-control communications. Based on the observed malware behavior, puNK-004 demonstrates capabilities in initial access through trojanized mobile applications, persistence on infected devices, credential and information theft, keylogging, exfiltration, and post-exploitation control of compromised Android systems. The actor is assessed as North Korea-aligned, with observed targeting focused on South Korean users.
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Who, where, and (when attributed) which flag flies behind the operation. Pulled from open-source reporting and Mallory's analyst review.
Geographies tied to known operations.
Attributed origin per open-source reporting.
10 distinct techniques observed across reporting, grouped by tactic. Hover any cell for the evidence excerpt; click through for MITRE's full description.
1 malware family attributed to this actor across reporting.
10 indicators attributed to this actor: domains, IPs, hashes, and other artifacts pulled from reporting. View more in app.
2 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
An S2W-tracked North Korea-linked threat cluster designated for actors using the DocSwap Android malware disguised as a document-viewing authentication app to conduct keylogging and information theft against likely South Korean mobile users.
An S2W-designated North Korea-linked threat cluster associated with use of the DocSwap malware disguised as a document viewing authentication app targeting South Korean mobile users.
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.