hacker-news · Crawled Aug 11, 2026
Gunra Ransomware Exploits Fortinet and Schneider Electric Flaws to Breach Networks
3 IoCs 3 Actors 3 Malware
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AI Summary
Gunra ransomware, a Conti-derived operation, has been actively targeting critical infrastructure sectors globally, including healthcare, financial services, and government facilities. The group exploits known vulnerabilities in Fortinet (CVE-2025-24472) and Schneider Electric (CVE-2024-5559) devices to gain initial access, then uses Impacket tools for lateral movement and credential dumping. Gunra employs a double extortion model, exfiltrating data before encryption, and has listed 51 victims on its leak site since April 2025, primarily in South Korea, Brazil, and Europe. The group has ties to affiliate programs, uses WhatsApp for negotiations, and has demonstrated advanced capabilities such as MFA bypass and session hijacking via SSL-VPN manipulation.
AI-extracted · verify before operational use
Extracted Entities 6 found
Indicators of Compromise 3 extracted
MITRE ATT&CK TTPs 82 techniques
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 T1059 Command and Scripting Interpreter · Execution T1059.001 PowerShell · Execution 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 T1218.011 Rundll32 · Defense Evasion T1485 Data Destruction · Impact T1486 Data Encrypted for Impact · Impact T1495 Firmware Corruption · Impact T1534 Internal Spearphishing · Lateral Movement 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 T1001.001 Junk Data · Command And Control T1055 Process Injection · Defense Evasion T1070.004 File Deletion · Defense Evasion T1189 Drive-by Compromise · Initial Access T1033 System Owner/User Discovery · Discovery T1046 Network Service Discovery · Discovery T1047 Windows Management Instrumentation · Execution T1048 Exfiltration Over Alternative Protocol · Exfiltration T1053 Scheduled Task/Job · Execution T1057 Process Discovery · Discovery T1083 File and Directory Discovery · Discovery T1086 T1086 T1087.002 Domain Account · Discovery T1110 Brute Force · Credential Access T1110.003 Password Spraying · Credential Access T1112 Modify Registry · Defense Evasion T1210 Exploitation of Remote Services · Lateral Movement T1211 Exploitation for Defense Evasion · Defense Evasion T1212 Exploitation for Credential Access · Credential Access T1218 System Binary Proxy Execution · Defense Evasion T1222 File and Directory Permissions Modification · Defense Evasion T1222.001 Windows File and Directory Permissions Modification · Defense Evasion T1482 Domain Trust Discovery · Discovery T1484.001 Group Policy Modification · Defense Evasion T1489 Service Stop · Impact T1490 Inhibit System Recovery · Impact T1537 Transfer Data to Cloud Account · Exfiltration T1542.001 System Firmware · Persistence T1543.003 Windows Service · Persistence T1547.001 Registry Run Keys / Startup Folder · Persistence T1548.002 Bypass User Account Control · Privilege Escalation T1552.001 Credentials In Files · Credential Access T1558 Steal or Forge Kerberos Tickets · Credential Access T1562.001 Disable or Modify Tools · Defense Evasion T1569 System Services · Execution T1570 Lateral Tool Transfer · Lateral Movement T1573 Encrypted Channel · Command And Control T1574.002 DLL Side-Loading · Persistence T1588 Obtain Capabilities · Resource Development T1588.001 Malware · Resource Development T1589 Gather Victim Identity Information · Reconnaissance T1595 Active Scanning · Reconnaissance T1599 Network Boundary Bridging · Defense Evasion T1650 Acquire Access · Resource Development