Monti Ransomware

Description Summary

Conti clone; newer variant only ~29% BinDiff-similar to Conti.

Threat Actor

Built on leaked Conti code; dedicated Linux/ESXi locker.

Technical Indicators

Encryption Extension
Random 5-char (Windows) / .monti (Linux)
Encryption Algorithm
AES-256-CTR (OpenSSL; old variant used Salsa20)
Ransom Note Name
Not publicly reported
Targeted Industries
Cross-sector (per leak-site victim telemetry)
First Seen
June 2022 (Conti clone)
Last Seen
Active
Geographical Location
Global / not publicly profiled

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