STAR BLIZZARD
G1033
RUSSIA
SEABORGIUM
Threat IntelligenceAPTRussiaSeptember 13, 2025

Star Blizzard Threat Profile

Russian FSB group conducting credential phishing against academics, defense officials, and NGOs to collect intelligence since 2017.

Russian FSB group conducting credential phishing against academics, defense officials, and NGOs to collect intelligence since 2017. This profile is mapped to MITRE ATT&CK G1033 and covers attribution, tooling, targeting, and defensive recommendations based on observed campaigns.

Overview & Attribution

Star Blizzard (also tracked as SEABORGIUM, COLDRIVER, Callisto Group, TA446) is a threat group attributed to Russia. The group primarily targets Academic, defense, government, NGOs for intelligence collection and operational objectives aligned with state interests.

MITRE ATT&CK Reference

This group is tracked as G1033 in the MITRE ATT&CK framework. All techniques referenced in this report are mapped to ATT&CK for consistent threat modeling and detection engineering.

Arsenal & Tools

Known tools and malware associated with Star Blizzard include:

Targeting & Operations

Star Blizzard operations focus on Academic, defense, government, NGOs. The group typically gains initial access through spear-phishing, exploitation of public-facing applications, or strategic web compromises before deploying custom implants for persistent access and data exfiltration.

Targeting Advisory

Organizations in the Academic sector should treat Star Blizzard as a relevant threat and validate their detection coverage against the MITRE ATT&CK techniques listed below.

MITRE ATT&CK Mapping

Key techniques observed in Star Blizzard operations:

Technique IDTechnique NameTactical Context
T1566.002T1566.002Observed in Star Blizzard campaigns
T1598.003T1598.003Observed in Star Blizzard campaigns
T1078T1078Observed in Star Blizzard campaigns
T1114.002T1114.002Observed in Star Blizzard campaigns

Full ATT&CK mapping: https://attack.mitre.org/groups/G1033/

Notable Campaigns

This threat group has been active in operations targeting Academic, defense, government, NGOs. Security researchers have documented campaigns involving EvilGinx and other tools deployed against organizations in multiple countries. Attribution confidence varies by campaign, but consistent infrastructure and TTP overlap links activity to Russia-nexus operations.

Detection & Defense

Recommended defensive measures against Star Blizzard:

How Mjolnir Security Can Help

Defend Against Star Blizzard

Mjolnir Security provides tailored threat intelligence, detection engineering, and incident response services to help organizations defend against Russia-nexus threat actors.

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Contact us: mjolnirsecurity.com

Written by: Mjolnir Security  |  Published: September 13, 2025