Suspicious PAN-OS Running Config Staged as Web Content via CVE-2024-3400

ATT&CK techniques

Initial Access → Collection

Recon
Resource Dev
Initial Access
- T1190Exploit Public-Facing Application
Execution
Persistence
Priv Esc
Defense Evasion
Cred Access
Discovery
Lateral Movement
Collection
- T1005Data from Local System
C2
Exfiltration
Impact

What it detects

This rule detects the PAN-OS running configuration being copied or staged into a web-accessible file carrying a .css extension, a behavior observed in Operation MidnightEclipse exploiting CVE-2024-3400. Attackers rename running-config.xml to a stylesheet so the device configuration can be retrieved over the management web interface. Detecting this exposes hands-on-keyboard post-exploitation and configuration theft on the firewall.

Reporting behind it

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Suspicious PAN-OS Running Config Staged as Web Content via CVE-2024-3400

Pivot detection · T1190 · 9 related

Detection content is published as a reviewed draft. Tune thresholds and exclusions against your own telemetry before enabling this rule for alerting.

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