INSPECTING ARCHIVED INTELLIGENCE (OUTDATED VERSION).

Gunra Ransomware Exploits Fortinet Flaws to Target Networks

| 2026-08-12 13:15 CRITICAL HIGH
Executive Summary AI-generated
Gunra ransomware actors are exploiting two Fortinet vulnerabilities to target government and critical national infrastructure organizations, a joint advisory issued by US and Republic of Korea authorities has warned. The advisory notes that Gunra employs multiple stealth and defense impairment techniques to hinder detection and analysis while moving across networks using stolen credentials and authentication bypass techniques. Victims have spanned regions throughout the world, and multiple critical sectors, including healthcare, financial services, government organizations and critical manufacturing. Gunra Ransomware Exploits Fortinet Flaws to Target Critical Infrastructure.
Technical Mitigations AI-generated
* Implement regular security updates and patches for Fortinet devices to ensure that known vulnerabilities are addressed before they can be exploited by attackers. * Use multi-factor authentication (MFA) with strong passwords, enable two-factor authentication whenever possible, and monitor user activity for suspicious login attempts. * Regularly review and update network access logs, command history, and system configuration files to detect and prevent stealthy lateral movement and exfiltration of data. * Monitor Fortinet device firmware versions and apply patches as soon as they are available to ensure that known vulnerabilities are addressed before they can be exploited by attackers. * Use a secure authentication protocol, such as SSH with encryption, when connecting to remote systems or services to prevent unauthorized access.
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Intelligence distributed on:
Incident Link
Intelligence Metadata
Actors / Malware / CVEs / Campaigns
Lazarus GroupLazarus GroupAndarielAndarielMoonstone SleetMoonstone Sleet QilinQilinContiConti CVE-2025-24472CVE-2025-24472 CVE-2024-5559CVE-2024-5559 CVE-2024-55591CVE-2024-55591
Target & Sectors
LATAM LATAM EUROPE EUROPE DPRK DPRK APAC APAC NORTH_AMERICA NORTH_AMERICA MIDDLE_EAST MIDDLE_EAST AFRICA AFRICA mediamedia logisticslogistics defensedefense technologytechnology healthcarehealthcare retailretail governmentgovernment manufacturingmanufacturing transportationtransportation healthhealth
Incident Timeline
‎October 2024
Gunra ransomware exploited vulnerabilities in Fortinet's software to breach networks.
tactic Ransomware
organisation Palo Alto Networks Unit42
threat_actor Andariel
‎January 2025
Gunra Ransomware exploited a previously unknown vulnerability in Fortinet's software that was publicly disclosed in January 2025.
‎February 2025
Threat actors exploited CVE-2025-24472 in Fortinet's Flaws to breach networks.
vulnerability CVE-2025-24472
organisation FortiOS
organisation CVE-2025
‎April 2025
Gunra ransomware exploited vulnerabilities in Fortinet's software to breach networks.
target_region United States
industry Government
tactic Ransomware
attribution FBI
attribution National Police Agency
attribution KNPA
malware Conti
target_region Korea, Republic of
target_region Brazil
target_region Spain
target_region Thailand
target_region Hong Kong
victims 51 victims
attribution National Policy Agency
tactic Extortion
financial 1 ransomware
attribution Overview The FBI
‎Apr. 2025
Gunra ransomware exploited vulnerabilities in Fortinet's software to breach networks.
infrastructure 23.239.119
infrastructure 86.54.28
infrastructure 103.125.234
infrastructure 70.36.99
infrastructure 211.21.210
infrastructure 123.184.143
infrastructure 182.204.21
infrastructure 182.204.16
infrastructure 123.244.187
infrastructure 182.204.39
infrastructure 67.43.53
infrastructure 123.246.37
infrastructure 91.201.66
tactic T1590.005 - IP Addresses
tactic T1584.001 - Domains
organisation Datapub[.]news
‎May 3, 2025
Gunra Ransomware exploited a time()-seeded rand() flaw in its Linux variant to breach networks.
tactic Ransomware
infrastructure Linux
general_metric 2 lists
attribution Trend Micro
attribution CYFIRMA
‎June 7, 2025
Gunra ransomware exploited vulnerabilities in Fortinet's software to breach networks.
‎July 2025
Gunra used exploits of Fortinet vulnerabilities to breach networks.
infrastructure 23.239.119
infrastructure 86.54.28
infrastructure 103.125.234
infrastructure 70.36.99
infrastructure 211.21.210
infrastructure 123.184.143
infrastructure 182.204.21
infrastructure 182.204.16
infrastructure 123.244.187
infrastructure 182.204.39
infrastructure 67.43.53
infrastructure 123.246.37
infrastructure 91.201.66
tactic T1590.005 - IP Addresses
tactic T1584.001 - Domains
organisation Datapub[.]news
‎July 23, 2025
Gunra ransomware exploited vulnerabilities in Fortinet's products to breach networks on July 23, 2025.
‎July 29, 2025
Gunra Ransomware exploited a time()-seeded rand() flaw in its Linux variant to breach networks.
tactic Ransomware
infrastructure Linux
general_metric 2 lists
attribution Trend Micro
attribution CYFIRMA
‎2025/08/10
The FBI discovered Gunra ransomware exploits in April 2023.
attribution FBI
attribution Gunra
‎2025/08/11
SuperBlack used a vulnerability in Fortinet's software to breach networks.
organisation SuperBlack
tactic Phishing
organisation WhatsApp
organisation Panel
‎the spring of 2025
US and South Korean government agencies issued a joint cybersecurity alert on Monday regarding the Gunra ransomware gang that targeted networks in the spring of 2025.
target_region United States
industry Government
tactic Ransomware
target_region Korea, Republic of
‎early 2025
Gunra ransomware exploited vulnerabilities in Fortinet's software to breach networks.
tactic Ransomware
organisation IP
general_metric 2 lists
‎mid-2025
Gunra actors exploited Fortinet flaws in Windows systems to breach networks.
infrastructure Windows
infrastructure Linux
‎September 2025
Threat actors used Fortinet's known vulnerabilities in the Qilin ransomware to breach networks targeting South Korean and Middle Eastern entities.
tactic Ransomware
source_region Korea, Republic of
source_region MIDDLE_EAST
threat_actor Lazarus Group
threat_actor Moonstone Sleet
malware Qilin
‎Nov. 6, 2025
The threat actors used a vulnerability in Fortinet's software to breach networks.
infrastructure 23.239.119
infrastructure 86.54.28
infrastructure 103.125.234
infrastructure 70.36.99
infrastructure 211.21.210
infrastructure 123.184.143
infrastructure 182.204.21
infrastructure 182.204.16
infrastructure 123.244.187
infrastructure 182.204.39
infrastructure 67.43.53
infrastructure 123.246.37
infrastructure 91.201.66
tactic T1590.005 - IP Addresses
tactic T1584.001 - Domains
organisation Datapub[.]news
‎Nov. 2025
23.239.119[.]6 June 2025.
infrastructure 23.239.119
infrastructure 86.54.28
infrastructure 103.125.234
infrastructure 70.36.99
infrastructure 211.21.210
infrastructure 123.184.143
infrastructure 182.204.21
infrastructure 182.204.16
infrastructure 123.244.187
infrastructure 182.204.39
infrastructure 67.43.53
infrastructure 123.246.37
infrastructure 91.201.66
tactic T1590.005 - IP Addresses
tactic T1584.001 - Domains
organisation Datapub[.]news
‎Dec. 2025
The threat actors used a vulnerability in Fortinet's software to breach networks.
infrastructure 23.239.119
infrastructure 86.54.28
infrastructure 103.125.234
infrastructure 70.36.99
infrastructure 211.21.210
infrastructure 123.184.143
infrastructure 182.204.21
infrastructure 182.204.16
infrastructure 123.244.187
infrastructure 182.204.39
infrastructure 67.43.53
infrastructure 123.246.37
infrastructure 91.201.66
tactic T1590.005 - IP Addresses
tactic T1584.001 - Domains
organisation Datapub[.]news
‎January 2026
Gunra ransomware exploited Fortinet flaws to breach networks.
tactic Ransomware
malware Conti
‎Jan. 2026
Gunra actors used the Fortinet flaw to breach networks through IP addresses 23.239.119, 86.54.28 and domains 103.125.234, 70.36.99, 211.21.210, 123.184.143, 182.204.21, 182.204.16, 123.244.187, 182.
infrastructure 23.239.119
infrastructure 86.54.28
infrastructure 103.125.234
infrastructure 70.36.99
infrastructure 211.21.210
infrastructure 123.184.143
infrastructure 182.204.21
infrastructure 182.204.16
infrastructure 123.244.187
infrastructure 182.204.39
infrastructure 67.43.53
infrastructure 123.246.37
infrastructure 91.201.66
tactic T1590.005 - IP Addresses
tactic T1584.001 - Domains
organisation Datapub[.]news
general_metric 3.0 SIGNBT
‎February 11, 2026
Threat actors used CloudSEK's ransomware exploits to target Fortinet networks.
organisation CloudSEK
general_metric 3.0 SIGNBT
‎Feb. 2026
The threat actors used a vulnerability in Fortinet's software to breach networks.
infrastructure 23.239.119
infrastructure 86.54.28
infrastructure 103.125.234
infrastructure 70.36.99
infrastructure 211.21.210
infrastructure 123.184.143
infrastructure 182.204.21
infrastructure 182.204.16
infrastructure 123.244.187
infrastructure 182.204.39
infrastructure 67.43.53
infrastructure 123.246.37
infrastructure 91.201.66
tactic T1590.005 - IP Addresses
tactic T1584.001 - Domains
organisation Datapub[.]news
‎March 12, 2026
Threat actors used a time()-seeded random number generator flaw in Gunra Ransomware's Linux variant to breach networks.
tactic Ransomware
infrastructure Linux
general_metric 2 lists
attribution Trend Micro
attribution CYFIRMA
‎March 2026
Threat actors used a weakness in Gunra ransomware's Linux ELF variants to breach networks.
infrastructure Windows
infrastructure Linux
tactic Ransomware
organisation ELF
‎August 10
Gunra actors used Fortinet flaws to breach networks.
tactic Lateral Movement
‎August 10, 2026
Gunra ransomware exploited vulnerabilities in Fortinet's software to breach networks.
industry Government
tactic Ransomware
attribution Gunra
attribution Glance
attribution Gunra Ransomware Original Publication
‎Between June and July of 2025
Gunra actors exploited vulnerabilities in Fortinet's software to breach networks targeting datapub.news between June and July of 2025.
observable datapub.news
‎123.244.187[.]144 Nov. 2025
The threat actors used a vulnerability in Fortinet's software to breach the networks of Datapub[.]news and other organizations.
infrastructure 23.239.119
infrastructure 86.54.28
infrastructure 103.125.234
infrastructure 70.36.99
infrastructure 211.21.210
infrastructure 123.184.143
infrastructure 182.204.21
infrastructure 182.204.16
infrastructure 123.244.187
infrastructure 182.204.39
infrastructure 67.43.53
infrastructure 123.246.37
infrastructure 91.201.66
tactic T1590.005 - IP Addresses
tactic T1584.001 - Domains
organisation Datapub[.]news
‎123.246.37[.]108 Nov. 2025
The threat actors used a vulnerability in Fortinet's software to breach the networks of Datapub[.]news and other organizations.
infrastructure 23.239.119
infrastructure 86.54.28
infrastructure 103.125.234
infrastructure 70.36.99
infrastructure 211.21.210
infrastructure 123.184.143
infrastructure 182.204.21
infrastructure 182.204.16
infrastructure 123.244.187
infrastructure 182.204.39
infrastructure 67.43.53
infrastructure 123.246.37
infrastructure 91.201.66
tactic T1590.005 - IP Addresses
tactic T1584.001 - Domains
organisation Datapub[.]news
‎Mar. 2026 July 2026
The threat actors used a vulnerability in Fortinet's software to breach networks.
infrastructure 23.239.119
infrastructure 86.54.28
infrastructure 103.125.234
infrastructure 70.36.99
infrastructure 211.21.210
infrastructure 123.184.143
infrastructure 182.204.21
infrastructure 182.204.16
infrastructure 123.244.187
infrastructure 182.204.39
infrastructure 67.43.53
infrastructure 123.246.37
infrastructure 91.201.66
tactic T1590.005 - IP Addresses
tactic T1584.001 - Domains
organisation Datapub[.]news
‎June 2025 July 2025
The threat actors used a vulnerability in Fortinet's software to breach networks.
infrastructure 23.239.119
infrastructure 86.54.28
infrastructure 103.125.234
infrastructure 70.36.99
infrastructure 211.21.210
infrastructure 123.184.143
infrastructure 182.204.21
infrastructure 182.204.16
infrastructure 123.244.187
infrastructure 182.204.39
infrastructure 67.43.53
infrastructure 123.246.37
infrastructure 91.201.66
tactic T1590.005 - IP Addresses
tactic T1584.001 - Domains
organisation Datapub[.]news
‎103.125.234[.]14 Nov. 2025
The threat actors used a vulnerability in Fortinet's software to breach the networks of Datapub[.]news and other organizations.
infrastructure 23.239.119
infrastructure 86.54.28
infrastructure 103.125.234
infrastructure 70.36.99
infrastructure 211.21.210
infrastructure 123.184.143
infrastructure 182.204.21
infrastructure 182.204.16
infrastructure 123.244.187
infrastructure 182.204.39
infrastructure 67.43.53
infrastructure 123.246.37
infrastructure 91.201.66
tactic T1590.005 - IP Addresses
tactic T1584.001 - Domains
organisation Datapub[.]news
‎211.21.210[.]181 Nov. 2025
The threat actors used a vulnerability in Fortinet's software to breach the networks of Datapub[.]news and other organizations.
infrastructure 23.239.119
infrastructure 86.54.28
infrastructure 103.125.234
infrastructure 70.36.99
infrastructure 211.21.210
infrastructure 123.184.143
infrastructure 182.204.21
infrastructure 182.204.16
infrastructure 123.244.187
infrastructure 182.204.39
infrastructure 67.43.53
infrastructure 123.246.37
infrastructure 91.201.66
tactic T1590.005 - IP Addresses
tactic T1584.001 - Domains
organisation Datapub[.]news
‎182.204.16[.]112 Nov. 2025
The threat actors used a vulnerability in Fortinet's software to breach the networks of Datapub[.]news and other organizations.
infrastructure 23.239.119
infrastructure 86.54.28
infrastructure 103.125.234
infrastructure 70.36.99
infrastructure 211.21.210
infrastructure 123.184.143
infrastructure 182.204.21
infrastructure 182.204.16
infrastructure 123.244.187
infrastructure 182.204.39
infrastructure 67.43.53
infrastructure 123.246.37
infrastructure 91.201.66
tactic T1590.005 - IP Addresses
tactic T1584.001 - Domains
organisation Datapub[.]news
‎July 2025  Nov. 6, 2025
23.239.119[.]6 June 2025.
infrastructure 23.239.119
infrastructure 86.54.28
infrastructure 103.125.234
infrastructure 70.36.99
infrastructure 211.21.210
infrastructure 123.184.143
infrastructure 182.204.21
infrastructure 182.204.16
infrastructure 123.244.187
infrastructure 182.204.39
infrastructure 67.43.53
infrastructure 123.246.37
infrastructure 91.201.66
tactic T1590.005 - IP Addresses
tactic T1584.001 - Domains
organisation Datapub[.]news
‎182.204.39[.]118 Nov. 2025
The threat actors used a vulnerability in Fortinet's software to breach the networks of Datapub[.]news and other organizations.
infrastructure 23.239.119
infrastructure 86.54.28
infrastructure 103.125.234
infrastructure 70.36.99
infrastructure 211.21.210
infrastructure 123.184.143
infrastructure 182.204.21
infrastructure 182.204.16
infrastructure 123.244.187
infrastructure 182.204.39
infrastructure 67.43.53
infrastructure 123.246.37
infrastructure 91.201.66
tactic T1590.005 - IP Addresses
tactic T1584.001 - Domains
organisation Datapub[.]news
‎91.201.66[.]146 Nov. 2025
The threat actors used a vulnerability in Fortinet's software to breach the networks of Datapub[.]news and other organizations.
infrastructure 23.239.119
infrastructure 86.54.28
infrastructure 103.125.234
infrastructure 70.36.99
infrastructure 211.21.210
infrastructure 123.184.143
infrastructure 182.204.21
infrastructure 182.204.16
infrastructure 123.244.187
infrastructure 182.204.39
infrastructure 67.43.53
infrastructure 123.246.37
infrastructure 91.201.66
tactic T1590.005 - IP Addresses
tactic T1584.001 - Domains
organisation Datapub[.]news
‎123.184.143[.]105 Nov. 2025
The threat actors used a vulnerability in Fortinet's software to breach the networks of Datapub[.]news and other organizations.
infrastructure 23.239.119
infrastructure 86.54.28
infrastructure 103.125.234
infrastructure 70.36.99
infrastructure 211.21.210
infrastructure 123.184.143
infrastructure 182.204.21
infrastructure 182.204.16
infrastructure 123.244.187
infrastructure 182.204.39
infrastructure 67.43.53
infrastructure 123.246.37
infrastructure 91.201.66
tactic T1590.005 - IP Addresses
tactic T1584.001 - Domains
organisation Datapub[.]news
‎2026/08/12
Gunra actors used the 7-Zip, WinRAR, RClone tools to copy and archive victim data for exfiltration.
organisation Gunra
organisation MFA
organisation Picus Security
organisation Umut Bayram
organisation CloudSEK
organisation Schneider Electric Flaws
organisation Breach Networks
organisation FortiProxy
organisation Schneider Electric PowerLogic P5
organisation Fortinet FortiOS
organisation Ransomware
threat_actor Andariel
organisation CyberScoop
organisation StopRansomware
organisation Gunra Ransomware
organisation Cybersecurity Advisory
victims 2 sectors
organisation NAS
infrastructure Windows
organisation Gunra Ransomware Actors
organisation Description FileZilla Open
organisation FTP
organisation Ransom
organisation Technique Title ID Use
organisation Use
financial 1 ransomware
infrastructure Linux
infrastructure 7 Zip
organisation Defense Impairment
threat_actor Lazarus Group
organisation Microsoft 365
organisation SMB
organisation Lateral Movement
organisation Persistence, Privilege Escalation
organisation Command
organisation Control Gunra
organisation VDI
organisation the internal virtual desktop infrastructure (
organisation Lateral Movement Technique Title ID Use
organisation Microsoft OneDrive
organisation SharePoint
organisation 9   Collection and Exfiltration Prior
infrastructure Winrar
organisation RClone
organisation Microsoft
organisation Tor
organisation DLS
organisation FortiOS
organisation CSF
organisation Fortinet
organisation CVE-2024-55591
organisation SSH
organisation OTP
organisation iCOUNTER
organisation Golden Community
organisation Defending Against the Gunra Threat
organisation Gunra’s Windows
organisation WMI
organisation Microsoft Windows
organisation MobaXterm
organisation RDP
organisation VNC
organisation Mimikatz Post-exploitation
organisation Meta
organisation OneDrive
organisation SIGNBT
organisation the NT Directory Services
organisation SSL
data_breach 9 TB
financial $10 dollars
organisation The Washington Post
organisation POLITICO
organisation KPNA
infrastructure 19.1
organisation PDF
infrastructure Fortigate
organisation Initial Access Technique Title ID Use
organisation FortiGate
organisation Control Technique Title ID Use
organisation Sliver Penetration
infrastructure Visual Studio Code
organisation Microsoft Visual Studio Code
organisation Key Actions
organisation the MITRE ATT&CK Tactics and Techniques
organisation qTox
organisation the internal Active Directory
organisation KNPA
organisation SQL
organisation SQLite
organisation RMM
organisation AnyDesk
organisation Google Remote Desktop
organisation Google
organisation PII
organisation Responders
organisation Identify
organisation Playbook-NG
organisation Mitigations
organisation CPG
organisation Repeat
‎early 2026
Gunra used a ransomware exploit to breach Fortinet networks.
tactic Ransomware
‎the first half of 2026
Threat actors used exploits in unidentified financial security software to breach networks targeting Korea.
source_region Korea, Republic of
tactic Phishing
‎the second quarter of 2026
Gunra ransomware exploited Fortinet flaws.
tactic Ransomware
financial 1,140 ransomware incidents
general_metric 12 %
Tactical Metrics
Metrics
infrastructure
‎Microsoft 365
Affected Product
Metrics
infrastructure
‎Windows
Affected Product
Metrics
infrastructure
‎Linux
Affected Product
Metrics
victims
51
Victims
Metrics
data_breach
9
Tb
Metrics
financial
1,140
Ransomware Incidents
Metrics
financial
10,000,000
Dollars
Metrics
financial
1
Ransomware
Metrics
victims
2
Sectors
Metrics
infrastructure
7
Zip
Metrics
infrastructure
‎Winrar
Affected Product
Metrics
infrastructure
‎19.1
Software Version
Metrics
infrastructure
‎Visual Studio Code
Affected Product
Metrics
infrastructure
‎23.239.119
Software Version
Metrics
infrastructure
‎86.54.28
Software Version
Metrics
infrastructure
‎103.125.234
Software Version
Metrics
infrastructure
‎70.36.99
Software Version
Metrics
infrastructure
‎211.21.210
Software Version
Metrics
infrastructure
‎123.184.143
Software Version
Metrics
infrastructure
‎182.204.21
Software Version
Metrics
infrastructure
‎182.204.16
Software Version
Metrics
infrastructure
‎123.244.187
Software Version
Metrics
infrastructure
‎182.204.39
Software Version
Metrics
infrastructure
‎67.43.53
Software Version
Metrics
infrastructure
‎123.246.37
Software Version
Metrics
infrastructure
‎91.201.66
Software Version
Metrics
infrastructure
‎Fortigate
Affected Product