bleeping-computer · Crawled Aug 11, 2026

US and South Korea warn of Gunra ransomware targeting govt agencies

1 Actors
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AI Summary

US and South Korean agencies issued a joint advisory warning of Gunra ransomware attacks targeting government and critical infrastructure organizations. The ransomware, first observed in April 2025, is derived from the leaked Conti source code and uses double extortion tactics. Gunra actors exploit vulnerabilities in Fortinet devices (CVE-2024-55591, CVE-2025-24472) and misconfigured SSH access on internet-facing systems to gain initial access, and have expanded operations through a ransomware-as-a-service (RaaS) model under the alias 'Golden Community'. The group has also recruited initial access brokers, including penetration testers, and has extended attacks to Linux environments since mid-2025.

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Extracted Entities 1 found

Threat Actor Lazarus Group →

MITRE ATT&CK TTPs 45 techniques

T1001 Data Obfuscation · Command And Control T1003 OS Credential Dumping · Credential Access T1018 Remote System Discovery · Discovery T1021.001 Remote Desktop Protocol · Lateral Movement T1021.002 SMB/Windows Admin Shares · Lateral Movement T1021.004 SSH · Lateral Movement T1027 Obfuscated Files or Information · Defense Evasion T1029 Scheduled Transfer · Exfiltration T1040 Network Sniffing · Credential Access T1053.005 Scheduled Task · Execution T1055 Process Injection · Defense Evasion T1059 Command and Scripting Interpreter · Execution T1059.001 PowerShell · Execution T1068 Exploitation for Privilege Escalation · Privilege Escalation T1070.001 Clear Windows Event Logs · Defense Evasion T1071.001 Web Protocols · Command And Control T1078 Valid Accounts · Defense Evasion T1082 System Information Discovery · Discovery T1085 T1085 T1087 Account Discovery · Discovery T1090 Proxy · Command And Control T1098 Account Manipulation · Persistence T1105 Ingress Tool Transfer · Command And Control T1129 Shared Modules · Execution T1133 External Remote Services · Persistence T1134 Access Token Manipulation · Defense Evasion T1190 Exploit Public-Facing Application · Initial Access T1195.002 Compromise Software Supply Chain · Initial Access T1203 Exploitation for Client Execution · Execution T1204.002 Malicious File · Execution T1210 Exploitation of Remote Services · Lateral Movement T1218 System Binary Proxy Execution · Defense Evasion T1218.011 Rundll32 · Defense Evasion T1480 Execution Guardrails · Defense Evasion T1485 Data Destruction · Impact T1486 Data Encrypted for Impact · Impact T1495 Firmware Corruption · Impact T1534 Internal Spearphishing · Lateral Movement T1548 Abuse Elevation Control Mechanism · Privilege Escalation T1557 Adversary-in-the-Middle · Credential Access T1566 Phishing · Initial Access T1566.001 Spearphishing Attachment · Initial Access T1566.002 Spearphishing Link · Initial Access T1583 Acquire Infrastructure · Resource Development T1610 Deploy Container · Defense Evasion