UNC4841
No sourced public emblem in this profile.
reference profile · reported nexus: CN (not nationality)
UNC4841 is a well-resourced threat actor that has utilized a wide range of malware and purpose-built tooling to enable their global espionage operations. They have been observed selectively deploying specific malware families at high priority targets, with SKIPJACK being the most widely deployed. UNC4841 primarily targeted government and technology organizations, but they have also been observed targeting other verticals.
Source-reported aliases: SLIME57. Associations do not prove equivalence.
Target geography
Catalog-listed countries (associations, not attack counts): No country-level metadata
No bound claim-post feed for this label.
Historical casebook
No dated record curated yet; absence does not establish inactivity.
Planned Kinwilder coverage
Tentative editorial review windows, contingent on evidence and review; not promised publication dates or predictions of attacks.
No assigned review window.
References
https://cloud.google.com/blog/topics/threat-intelligence/barracuda-esg-exploited-globally/
https://i.blackhat.com/Asia-24/Presentations/Asia-24-Chen-Chinese-APT.pdf
https://www.youtube.com/watch?v=PSaix1C-UMI
https://www.youtube.com/watch?v=4zaStuUdvrE
https://sansorg.egnyte.com/dd/8ekLJCPHPj/
https://www.cisa.gov/sites/default/files/2023-07/MAR-10454006.r3.v1.CLEAR_.pdf
https://www.cisa.gov/sites/default/files/2023-07/MAR-10454006.r2.v1.CLEAR_.pdf
https://www.cisa.gov/sites/default/files/2023-07/MAR-10454006.r1.v2.CLEAR_.pdf
https://www.cisa.gov/sites/default/files/2023-08/MAR-10459736.r1.v1.CLEAR_.pdf
https://www.cisa.gov/sites/default/files/2023-08/MAR-10454006.r4.v2.CLEAR_.pdf
https://www.cisa.gov/sites/default/files/2023-09/MAR-10454006.r5.v1.CLEAR__0.pdf
https://www.barracuda.com/company/legal/esg-vulnerability
https://mandiant.widen.net/s/qwlxddwdg6/barracuda-cve-2023-2868-hardening
https://jsac.jpcert.or.jp/archive/2025/pdf/JSAC2025_1_5_leon-chang_theo-chen_en.pdf