COLDRIVER
Also known asStar Blizzard · SEABORGIUM · Callisto Group · TA446 · Callisto · Calisto · TAG-53 · BlueCharlie · Blue Callisto · UNC4057 · IRON FRONTIER · Grey Pro · Mythic Ursa · Gossamer Bear
Summary
FSB Centre 18 credential phishing against Western think tanks, academics, and politicians. Masquerades as journalists. US/UK disrupted operations and sanctioned operator Andrey Korinets (Dec 2023).
Attribution
AttributedGovernment attribution: FSB Centre 18
Named by a government: indictment, sanctions designation, joint advisory or official statement.
Sources
- UK NCSC (Government, 2023-12-07)
Star Blizzard is almost certainly subordinate to FSB Centre 18 - MITRE ATT&CK (MITRE ATT&CK, 2026-10)
Originates in Russia; campaigns align with Russian state interests
Campaigns 3
| Campaign | Period | Targets | Sectors | Source |
|---|---|---|---|---|
| RedFlick phishing waves delivering CosmicPulse | 2026-01 – ongoing | Ukraine, USA, UK, Global | NGO, Think Tanks, Government, Financial Services, Diplomatic, Academia, Media | Microsoft Threat Intelligence (2026-09-29) |
| COLDCOPY ClickFix → NOROBOT/MAYBEROBOT re-tooling | 2025-05 – 2025-09 | Global | NGO, Think Tanks, Dissidents, Government | Google Threat Intelligence Group (2025-10-20) |
| WhatsApp group QR-code account hijacking | 2024-11 | Global | Government, Diplomatic, Defense Policy, Ukraine Assistance | Microsoft Threat Intelligence (2025-01-16) |
Newest first. ASSESSED: tied to the actor with hedging or through an alias. CLAIMED: an allegation no independent source confirms.
MITRE ATT&CK techniques 6
| Reconnaissance1 | T1598.003Spearphishing Link |
|---|---|
| Initial Access1 | T1566.002Spearphishing Link |
| Execution3 | T1059.001PowerShellT1204.004Malicious Copy and PasteT1053.005Scheduled Task |
| Stealth1 | T1218.011Rundll32 |
Malware and tools 5
| Name | Description | Platform |
|---|---|---|
| SPICA | Backdoor (Rust) | Windows |
| LOSTKEYS | Info Stealer | Windows |
| NOROBOT (BAITSWITCH) | Downloader DLL / CPL | Windows |
| CosmicPulse (YESROBOT) | Python backdoor | Windows |
| MAYBEROBOT (SIMPLEFIX) | PowerShell backdoor | Windows |
Infrastructure patterns
- Phishing sent from accounts on compromised cPanel and WordPress sites (Microsoft, 2026)
- Random-word or lookalike domains host its phishing; redirects to Evilginx servers (CISA, 2023; MITRE ATT&CK, 2026)
- Moves to new domains quickly once infrastructure is exposed (Microsoft, 2025; Google GTIG, 2025)
- WhatsApp linked-devices feature ties accounts to its infrastructure for exfiltration (MITRE ATT&CK, 2026)
Reporting and advisories 5
- CISA
AA23-341A — Star Blizzard Spear-Phishing - Microsoft Threat Intelligence
RedFlick phishing waves delivering CosmicPulse - Google Threat Intelligence Group
COLDCOPY ClickFix → NOROBOT/MAYBEROBOT re-tooling - Microsoft Threat Intelligence
WhatsApp group QR-code account hijacking - MITRE ATT&CK
COLDRIVER (G1033) group profile