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Cisco Secure Firewall - PHP2Shell Suspicious Upload Activity

This analytic detects suspicious PHP web application upload activity using Cisco Secure Firewall Threat Defense Intrusion Events. The matching network signature identifies a request pattern associated with attempts…

Description

This analytic detects suspicious PHP web application upload activity using Cisco Secure Firewall Threat Defense Intrusion Events. The matching network signature identifies a request pattern associated with attempts to exhaust server resources through PHP session handling. Investigate the source, targeted application, and related web server activity to determine whether the request was part of PHP2Shell exploitation.

Detection logic

Detection requirements

Platform
ContainersESXiIaaSLinuxmacOSNetwork DevicesWindows

The rule states no platform. This is derived from the ATT&CK technique it maps to.

Log source category
cisco_secure_firewall_threat_defense_intrusion_event

Known benign triggers

  • Approved load testing or unusual multipart uploads may trigger this signature. Review the request context and the targeted service.

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