UNC5221
MITRE G1031Also known as VerdantBamboo
Reports
4
First seen
May 28, 2026
Last seen
Aug 15, 2026
Motivation
Espionage
Targeting
Sectors
Victim regions
United States ×1
Top ATT&CK techniques
T1190 Exploit Public-Facing Application ×3T1566 Phishing ×2T1078 Valid Accounts ×2T1041 Exfiltration Over C2 Channel ×2T1133 External Remote Services ×2T1071.001 Application Layer Protocol: Web Protocols ×2T1110 Brute Force ×1T1218.009 System Binary Proxy Execution: Regsvcs/Regasm ×1T1574.002 Hijack Execution Flow: DLL Side-Loading ×1T1486 Data Encrypted for Impact ×1T1195 Supply Chain Compromise ×1T1566.001 Phishing: Spearphishing Attachment ×1
Indicators
cve ×2filename ×2
Indicator values are available on Pro and via the API.
Associated CVEs
Recent reports
Critical