,

The Trigona ransomware

Detecteam

TLP

TLP CLEAR

Author

Jordi M. Lobo

Summary

The Trigona ransomware, emerging in late 2022, has rapidly evolved with continuous updates. By April 2023, it started targeting MSSQL servers through brute force methods. This threat is linked to the CryLock ransomware group and possibly ALPHV (BlackCat), though their involvement remains uncertain. The US and India are the most affected countries, with technology and healthcare sectors facing the brunt.

Trigona exploits the CVE-2021-40539 vulnerability and deploys various tools for lateral movement, including Splashtop. It employs Mimikatz to gather victim passwords and uses AES encryption for file locking. A Linux version has surfaced, while a 64-bit Windows variant introduced new command-line options.

The ransomware employs a double extortion scheme, pressuring victims to pay by threatening data leaks. Enhanced security measures, including MFA, data backups, and prompt system patching, are recommended to combat this growing threat.

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DATA

We are providing data for attacks weekly hoping to contribute raising awareness to threats from their data.

cs_ProcessRollup2.json_Download

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Ransomware

references

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T1003.001 – LSASS Memory T1005 – Data from Local Syste T1012 – Query Registry T1016 – System Network Configuration Discovery T1018 – Remote System Discovery T1021.001 – Remote Desktop Protocol T1021.002 – SMB/Windows Admin Shares T1021.004 – SSH T1027 – Obfuscated Files or Information T1033 – System Owner/User Discovery T1036.005 – Masquerading: Match Legitimate Name or Location T1041 – Exfiltration Over C2 Channel T1047 – Windows Management Instrumentation T1053.005 – Scheduled Task/Job: Scheduled Task T1055 – Process Injection T1057 – Process Discovery T1059 – Command Line Interface T1059.001 – Command and Scripting Interpreter: PowerShell T1059.003 – Windows Command Shell T1069 – Permission Groups Discovery T1069.001 – Local Groups T1069.002 – Domain Groups T1070.004 – File Deletion T1071 – Application Layer Protocol T1071.001 – Web Protocols T1078 – Valid Accounts T1082 – System Information Discovery T1083 – File and Directory Discovery T1087.002 – Domain Account T1105 – Ingress Tool Transfer T1110.001 – Brute Force: Password Guessing T1112 – Modify Registry T1140 – Deobfuscate/Decode Files or Information T1190 – Exploit Public-Facing Application T1204.002 – User Execution: Malicious File T1210 – Exploitation of Remote Services T1218.011 – System Binary Proxy Execution: Rundll32 T1219 – Remote Access Software T1482 – Domain Trust Discovery T1486 – Data Encrypted for Impact T1490 – Inhibit System Recovery T1518.001 – Security Software Discovery T1543.003 – Create or Modify System Process: Windows Service T1566.001 – Phishing: Spearphishing Attachment T1574.002 – DLL Side-Loading

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