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Saint Bear

Also known as Storm-0587, TA471, UAC-0056, Lorec53
Tracked as G1031

Saint Bear is a Russian-nexus threat actor active since early 2021, primarily targeting entities in Ukraine and Georgia. The group is notable for a specific remote access tool, Saint Bot, and information stealer, OutSteel in campaigns. Saint Bear typically relies on phishing or web staging of malicious documents and related file types for initial access, spoofing government or related entities. Saint Bear has previously been confused with Ember Bear operations, but analysis of behaviors, tools, and targeting indicates these are distinct clusters.

How we source and review actor profiles
Status
Active

Activity timeline

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.

Cataloged
RelationshipDistinct from relationship with Ember Bear

MITRE notes historical confusion between these names but assesses Saint Bear and Ember Bear as distinct activity clusters.

High
Cataloged
IdentityAlias: Storm-0587

Reviewed identity mapping approved on this date.

Cataloged
IdentityAlias: TA471

Reviewed identity mapping approved on this date.

Cataloged
IdentityAlias: UAC-0056

Reviewed identity mapping approved on this date.

Cataloged
IdentityAlias: Lorec53

Reviewed identity mapping approved on this date.

Cataloged
IdentityTracking identifier: G1031

Reviewed identity mapping approved on this date.

Identity and attribution

Exact names and tracking identifiers resolve to this canonical profile. Rebrands, affiliations, and overlapping clusters remain separate confidence-rated relationships.

Name map

Saint BearCanonical Name
Lorec53Alias
Storm-0587Alias
TA471Alias
UAC-0056Alias
G1031Tracking Id

Shared-name reviews

Every exact-name collision is reviewed. Same-actor decisions select a preferred profile while distinct and unresolved clusters remain separate.

Distinct actors high

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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