Ghostwriter
MITRE G0047Also known as FrostyNeighbor, UNC1151, GhostWriter, UAC-0057, PUSHCHA, Storm-0257, TA445, Umbral Bison, White Lynx
Reports
11
First seen
Nov 6, 2025
Last seen
Sep 3, 2026
Motivation
Espionage
Relationships
Filled ◆ = CVE exploited in the wild. Entities that appear together in Signalis reporting — co-mention, not confirmed collaboration. Reports naming many actors at once (weekly roundups) are excluded from relationship edges.
Targeting
Sectors
Victim regions
×1×5
Ukraine×5
Poland×1
Victim country, only when stated. Corpus is predominantly English-language reporting, so US/EU coverage is overweighted relative to true victim distribution.
Top ATT&CK techniques
T1566 Phishing ×9T1005 Data from Local System ×6T1082 System Information Discovery ×5T1190 Exploit Public-Facing Application ×4T1105 Ingress Tool Transfer ×4T1566.001 Phishing: Spearphishing Attachment ×4T1059 Command and Scripting Interpreter ×3T1041 Exfiltration Over C2 Channel ×3T1204 User Execution ×3T1059.007 JavaScript ×3T1566.002 Phishing: Spearphishing Link ×3T1204.001 User Execution: Malicious Link ×2
Indicators
cve ×15filename ×14domain ×10url ×3
Indicator values are available on Pro and via the API.
Associated CVEs
CVE-2024-42009 (exploited)CVE-2023-38831 (exploited)CVE-2024-4345 (exploited)CVE-2025-68947 (exploited)CVE-2025-8088 (exploited)CVE-2026-11645 (exploited)CVE-2026-20127 (exploited)CVE-2026-20131 (exploited)CVE-2026-20230 (exploited)CVE-2026-28318 (exploited)CVE-2026-33825 (exploited)CVE-2026-42897 (exploited)CVE-2021-26855 (exploited)CVE-2026-49975 (exploited)CVE-2023-27532 (exploited)
Recent reports
High