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Severity
CRITICAL
Priority
0.920
Executive Summary
An AI-powered attack platform compromised 600+ firewall devices across 55 countries by targeting weak passwords, no software vulnerability needed. The same tools are available to other threat actors.
Technical Analysis
CyberStrikeAI is a Go-based AI-native offensive platform with 100+ tools and GenAI orchestration (Anthropic Claude + DeepSeek integration).
Developer: Ed1s0nZ (assessed CNNVD/MSS-affiliated, medium confidence).
Operator: Russian-speaking, financially motivated (medium confidence).
Attack chain: credential-based, no CVE exploited. 600+ devices compromised Jan 11u2013Feb 18, 2026 across 55 countries. IOC: 212.11.64[.]250 (Switzerland, SWISSNETWORK02 AS, confirmed Team Cymru). Primary fix: configuration change, restrict management interface access, enable MFA.
Action Checklist IR ENRICHED
Triage Priority:
IMMEDIATE
Escalate immediately to CISO/executive team if any unauthorized admin accounts are confirmed or if external scans detect management interface still internet-reachable after remediation; engage external IR firm if device forensics indicates multi-month persistent access or secondary implants detected.
Audit FortiGate management interface exposure (remove https/ssh from WAN allowaccess)
Containment
NIST 800-61r3 §3.3 (Containment Strategy)
NIST AC-3 (Access Enforcement)
CIS 6.2 (Network Access Control)
Compensating Control
SSH to each FortiGate via console or bastion host. Run `config system interface` → `edit <wan-interface>` → list current allowaccess settings. Document baseline, then remove 'https' and 'ssh' from allowaccess string. Save config via `end`. If no bastion: use out-of-band serial console access or factory reset if device is confirmed compromised and unrecoverable.
Preserve Evidence
Capture FortiGate system logs (`diagnose debug flow trace start`) 24 hours before and after audit to document all management interface connection attempts. Export current admin user list via `get system admin` and timestamp. Preserve full config backup via `execute backup full-system <filename>` before any changes.
Enable MFA on all FortiGate admin accounts
Eradication
NIST 800-61r3 §3.4 (Eradication)
NIST IA-2 (Authentication)
CIS 6.3.1 (Multi-Factor Authentication)
Compensating Control
FortiGate supports RADIUS/LDAP-based MFA natively. If no external auth available: enable FortiToken (free, local OTP-based MFA). Configure via `config system admin` → enable `two-factor` and assign FortiToken serial. For air-gapped environments: document 2FA enablement in change log and require dual-admin approval for all future account modifications (manual compensating control per NIST AC-2).
Preserve Evidence
Export admin authentication settings before MFA enablement: `get system admin` and `get system local-user`. Capture MFA enrollment logs and backup of FortiToken activation records. Document which accounts have 2FA vs. single-factor (this data is critical for post-incident forensics to identify which accounts remained at risk during the campaign window).
Rotate all FortiGate admin credentials
Eradication
NIST 800-61r3 §3.4 (Eradication)
NIST IA-4 (Identifier Management)
CIS 6.2.1 (Credential Reset)
Compensating Control
Generate 24+ character random passwords (use `openssl rand -base64 32`). Store new credentials in offline password manager (KeePass, not cloud-based). Rotate via serial console if network access is suspected compromised. After rotation, log in with new credentials and verify no additional admin accounts exist via `get system admin` (attackers often create backdoor accounts). Document old vs. new password hash timestamps from FortiGate logs.
Preserve Evidence
Capture FortiGate authentication logs before rotation: `diagnose test authd list` to show all current admin authentication attempts in last 30 days. Export admin user configuration snapshot. After rotation, capture login success/failure logs for 48 hours to detect attackers attempting old credentials (indicates active compromise).
Block IOC 212.11.64[.]250 at perimeter
Containment
NIST 800-61r3 §3.3 (Containment Strategy)
NIST SC-7 (Boundary Protection)
CIS 9.1 (Network Segmentation)
Compensating Control
If no centralized firewall: block at host-level using `iptables` (Linux) or Windows Defender Firewall (Windows). Linux: `iptables -I INPUT -s 212.11.64.250 -j DROP` and persist via iptables-save. Windows: `netsh advfirewall firewall add rule name='Block-CyberStrikeAI-IOC' dir=in action=block remoteip=212.11.64.250`. Monitor for outbound connection attempts to this IP via `netstat -anob` (Windows) or `ss -tulnap` (Linux). Escalate if C2 traffic is detected after blocking (indicates secondary implant).
Preserve Evidence
Capture network traffic 24 hours before blocking: use `tcpdump -i any host 212.11.64.250 -w ioc_traffic.pcap` (or Wireshark). Review firewall logs for any connections to this IP (connection timestamp, source port, destination port, payload size). Check proxy/web logs if applicable. Document baseline connection patterns to confirm this is actual malicious traffic vs. false positive.
Review admin account list for unauthorized accounts created Jan 11u2013Feb 18
Detection & Analysis
NIST 800-61r3 §3.2 (Detection and Analysis)
NIST AC-2 (Account Management)
CIS 6.1.1 (Inventory and Control of Enterprise Software)
Compensating Control
Export full admin user list: `get system admin` on each device. Cross-reference against change management records and documented authorized accounts. For accounts with no documented approval: check creation timestamp via `diagnose test authd list` or FortiGate syslog. Correlate creation date to network logs during Jan 11–Feb 18 window to identify source IP of account creation. Use `diagnose system logd reset stats` to clear stats, then enable syslog forwarding to external server to preserve future account changes.
Preserve Evidence
Capture admin account creation logs from FortiGate system logs (look for 'User' login events and 'admin' privilege grants). Export current admin list with timestamps. Preserve FortiGate CLI history (`show history`). Check authentication attempt logs for accounts created during campaign window to see if attacker tested new accounts immediately after creation. If FortiGate syslog is not enabled, manually review the admin account database backup captured in step 1.
Run external scan to confirm management interface not internet-reachable
Recovery
NIST 800-61r3 §3.5 (Post-Incident Activities, validation phase)
NIST CA-8 (Security Assessment and Authorization)
CIS 11.2.4 (Network Segmentation Testing)
Compensating Control
Use free external scan tools: Shodan query for FortiGate HTTPS banner on your public IP range (shodan.io), or nmap from external VPS: `nmap -p 443,22 --script ssl-cert <your-public-ip-range>`. If results show FortiGate listening on WAN: immediate escalation. Document scan baseline before and after remediation. For air-gapped validation: use internal subnet scanner (nmap) from trusted workstation to confirm management ports NOT responding from WAN-facing interfaces.
Preserve Evidence
Capture baseline external scan results (Shodan, Censys, or nmap scan) BEFORE removing management interface from WAN. Re-run identical scan after remediation and document before/after comparison. Preserve scan reports with timestamps. Check firewall rule export to confirm deny rules were added (not just interface configs changed—rules are the enforcement layer per NIST SC-7).
Recovery Guidance
Post-containment: implement network segmentation to restrict management traffic to bastion hosts only (NIST CA-9). Deploy FortiGate logs to SIEM with 90-day retention minimum for forensic analysis. Conduct full access review across all 600+ affected devices to identify which were actively exploited vs. compromised credentials only. Establish quarterly credential audit process and monthly MFA effectiveness reviews.
Key Forensic Artifacts
FortiGate system logs (syslog, /var/log/messages) - admin login attempts, account creation events, CLI command history (diagnose test authd list)
FortiGate admin user database config snapshot (get system admin output) - creation timestamps, last login, privilege levels
Network packet capture on management interface (tcpdump/Wireshark) - source IPs, login protocols, payload analysis
Firewall allow/deny rules export (show firewall policy all) - document baseline access controls before/after remediation
External vulnerability scan results (Shodan, Censys, nmap) - timestamp before and after WAN interface hardening
Detection Guidance
Monitor FortiGate devices for anomalous management plane activity including unexpected configuration changes, new admin account creation, or modified firewall policies without corresponding change tickets. SIEM Rules:
- Alert on multiple failed authentication attempts followed by successful login from previously unseen source IPs targeting FortiGate management interfaces on TCP/443 or TCP/8443.
- Detect outbound connections from FortiGate management IPs to non-baseline external destinations, particularly long-duration low-bandwidth beaconing patterns with jitter intervals between 30-300 seconds.
- Alert on CLI commands executed via SSH or web UI that include 'execute factoryreset', 'config system admin', 'set password', 'diag debug', or bulk policy deletions outside maintenance windows.
- Correlate FortiGate
syslog events for privilege escalation indicators: admin role changes, new super_admin accounts, or SSH key additions not initiated through approved IAM workflows. - Detect lateral movement from compromised FortiGate devices by monitoring for ARP scanning, ICMP sweeps, or TCP SYN floods originating from firewall internal interfaces toward internal subnets.
- Flag anomalous VPN tunnel establishments: new peer IPs, unusual geographic locations, or tunnels created without corresponding user authentication events in identity provider logs.
- Monitor for fileless persistence indicators: unexpected processes spawned from FortiGate httpsd or sshd daemons, or anomalous memory allocation in management daemon processes.
- Baseline and alert on deviations in FortiGate SNMP trap frequency,
syslog volume drops that may indicate log suppression, or NTP synchronization failures that could indicate tampering. - Correlate threat intelligence feeds against source IPs connecting to FortiGate management interfaces; alert on matches to known CyberStrikeAI campaign infrastructure.
- Implement watchlist for CVE-agnostic zero-day exploitation patterns including malformed HTTP headers to management GUI, oversized POST bodies to /api/v2/ endpoints, and unexpected 500-series responses indicating server-side errors under adversary manipulation.
Indicators of Compromise (1)
| Type | Value | Context | Confidence |
|---|
| IPV4 |
212.11.64.250 |
CyberStrikeAI C2/service banner |
high |
Compliance Framework Mappings
MITRE ATT&CK Mapping
T1078
Valid Accounts
defense-evasion
T1219
Remote Access Tools
command-and-control
Guidance Disclaimer
The analysis, framework mappings, and incident response recommendations in this intelligence
item are derived from established industry standards including NIST SP 800-61, NIST SP 800-53,
CIS Controls v8, MITRE ATT&CK, and other recognized frameworks. This content is provided
as supplemental intelligence guidance only and does not constitute professional incident response
services. Organizations should adapt all recommendations to their specific environment, risk
tolerance, and regulatory requirements. This material is not a substitute for your organization's
official incident response plan, legal counsel, or qualified security practitioners.
