Ghostwriter
MITRE G0047Also known as UNC1151, FrostyNeighbor, GhostWriter, UAC-0057, PUSHCHA, Storm-0257, TA445, Umbral Bison, White Lynx
Reports
10
First seen
Nov 6, 2025
Last seen
Jul 2, 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 ×5T1082 System Information Discovery ×4T1566.001 Phishing: Spearphishing Attachment ×4T1059.007 JavaScript ×3T1105 Ingress Tool Transfer ×3T1041 Exfiltration Over C2 Channel ×3T1566.002 Phishing: Spearphishing Link ×3T1190 Exploit Public-Facing Application ×3T1555 Credentials from Password Stores ×2T1204.001 User Execution: Malicious Link ×2T1204 User Execution ×2
Indicators
filename ×11cve ×10domain ×9url ×3
Indicator values are available on Pro and via the API.
Associated CVEs
Recent reports
High