threat actor · Russia
UNC2452
On record in MISP Galaxy
Out of date: the sync last ran 3 hours ago. Newer CVEs and scores may be missing from the map.
Sources name this actor but link nothing to it yet: no CVE, technique or software is on record.
Reporting regarding activity related to the SolarWinds supply chain injection has grown quickly since initial disclosure on 13 December 2020. A significant amount of press reporting has focused on the identification of the actor(s) involved, victim organizations, possible campaign timeline, and potential impact. The US Government and cyber community have also provided detailed information on how the campaign was likely conducted and some of the malware used. MITRE’s ATT&CK team — with the assistance of contributors — has been mapping techniques used by the actor group, referred to as UNC2452/Dark Halo by FireEye and Volexity respectively, as well as SUNBURST and TEARDROP malware.
Source: MISP Galaxy. MISP Galaxy threat-actor cluster, by the MISP Project (CC0 1.0).
- Also known as
- DarkHalo, StellarParticle, NOBELIUM, Solar Phoenix, Midnight Blizzard
- Origin
- Russia
- On record in
- MISP Galaxy
Data as of 2026-11-14. CVE List through 2026-11-14 · EPSS of 2026-11-13 · CISA KEV checked 2026-11-14. Sources: MITRE ATT&CK (© The MITRE Corporation, reproduced and distributed with its permission), the MISP Galaxy (CC0), and CyberSIXT's own coverage.