G1003
Ember Bear is a Russian state-sponsored cyber espionage group that has been active since at least 2020, linked to Russia's General Staff Main Intelligence Directorate (GRU) 161st Specialist Training Center (Unit 29155). Ember Bear has primarily focused operations against Ukrainian government and telecommunication entities, but has also operated against critical infrastructure entities in Europe and the Americas. Ember Bear conducted the WhisperGate destructive wiper attacks against Ukraine in early 2022. There is some confusion as to whether Ember Bear overlaps with another Russian-linked entity referred to as Saint Bear. At present available evidence strongly suggests these are distinct activities with different behavioral profiles.
A dated ledger of actor-claimed victims, campaigns, indicators, identity mappings, relationships, and CVE links. Each date states what it measures. For extensive leak-site histories, victim entries are limited to the 100 most recent distinct listings.
MITRE notes historical confusion between these names but assesses Saint Bear and Ember Bear as distinct activity clusters.
HighReviewed identity mapping approved on this date.
Reviewed identity mapping approved on this date.
Reviewed identity mapping approved on this date.
Reviewed identity mapping approved on this date.
Reviewed identity mapping approved on this date.
Reviewed identity mapping approved on this date.
Reviewed identity mapping approved on this date.
Exact names and tracking identifiers resolve to this canonical profile. Rebrands, affiliations, and overlapping clusters remain separate confidence-rated relationships.
Every exact-name collision is reviewed. Same-actor decisions select a preferred profile while distinct and unresolved clusters remain separate.
MITRE states that Saint Bear was previously confused with Ember Bear but that behavior, tooling, and targeting indicate distinct activity clusters.
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