Sinobi Ransomware

Description Summary

176 attacks in 2025; rapid affiliate migration from Lynx.

Threat Actor

Closed hybrid RaaS; rebrand/successor of Lynx (which inherited INC Ransom code); double extortion.

Technical Indicators

Encryption Extension
Not publicly reported
Encryption Algorithm
Curve25519 + AES-128 (CTR) lineage — successor to Lynx (63% code) → INC Ransom (56%)
Ransom Note Name
Not publicly reported
Targeted Industries
Manufacturing, Healthcare, Financial, Education
First Seen
June 2025
Last Seen
Active (176 attacks in 2025)
Geographical Location
Global; US-heavy (19 countries)

MITRE ATT&CK Matrix

Tactic TTP Technique Name
Impact x 2 T1486 Data Encrypted for Impact
T1490 Inhibit System Recovery
Exfiltration x 1 T1567 Exfiltration Over Web Service (leak site)
Initial Access x 2 T1190 Exploit Public-Facing Application
T1078 Valid Accounts