Cyber Resilience

Threat actor · all actors

Saint BearG1031 state

🇷🇺 RU

aka Saint Bear, Storm-0587, TA471, UAC-0056, Lorec53

Last updated: 2026-08-20

0attributed CVEs
26ATT&CK techniques
0.0IDF score (tooling uniqueness)
0exclusive CVEs
years active

About this actor

[Saint Bear](https://attack.mitre.org/groups/G1031) 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](https://attack.mitre.org/software/S1018), and information stealer, [OutSteel](https://attack.mitre.org/software/S1017) in campaigns. [Saint Bear](https://attack.mitre.org/groups/G1031) typically relies on phishing or web staging of malicious documents and related file types for initial access, spoofing government or related entities.(Citation: Palo Alto Unit 42 OutSteel SaintBot February 2022 )(Citation: Cadet Blizzard emerges as novel threat actor) [Saint Bear](https://attack.mitre.org/groups/G1031) has previously been confused with [Ember Bear](https://attack.mitre.org/groups/G1003) operations, but analysis of behaviors, tools, and targeting indicates these are distinct clusters.

Source: MITRE ATT&CK

Names & naming systems

Each vendor coins its own name for the same actor. Where a name follows a known scheme we attribute it; the rest are listed honestly as unclassified.

MITRE ATT&CKG-number catalogue id

G1031

Microsoftweather-system names

Storm-0587

CrowdStrikenation-animal names

Saint Bear

CERT-UAUAC cluster id

UAC-0056

ProofpointTA threat-actor id

TA471

Unclassifiedno scheme matched

Lorec53

How we know this

Data origin
MITRE ATT&CK Imported from the MITRE ATT&CK STIX bundle as an intrusion-set object.
Techniques
MITRE ATT&CK STIX mappings — 26 ATT&CK techniques on file.
Named victims
None on file.

See how actor data is built for the full pipeline.

Activity timeline

No activity events recorded.

Profile

CVERiskCVSSEPSSPublishedProducts
No attributed CVEs.

Mitigating controls (NIST 800-53)

ControlTechniques coveredCoverage
SI-314 / 2654%
SI-414 / 2654%
CM-212 / 2646%
CM-612 / 2646%
SI-712 / 2646%
SI-210 / 2638%
CA-79 / 2635%
CM-79 / 2635%
AC-68 / 2631%
AC-37 / 2627%
SI-107 / 2627%
AC-26 / 2623%
AC-46 / 2623%
IA-96 / 2623%
SC-446 / 2623%

Co-occurring actors

None.

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