Suspicious failed HTTP request - potential Spring4Shell exploit

Synopsis

Activation Period	14 Days
Training Period	30 Days
Test Period	N/A (single event)
Deduplication Period	1 Day
Required Data	Requires one of the following data sources: Palo Alto Networks Platform Logs OR XDR Agent
Detection Modules
ATT&CK Tactic	Initial Access (TA0001)
ATT&CK Technique	Exploit Public-Facing Application (T1190)
Severity	Low

A potentially malicious failed HTTP request was received, possibly as part of a Spring4Shell exploitation attempt.

Gain the ability to execute code remotely or drop malware.

ATT&CK Tactic	Initial Access (TA0001)
ATT&CK Technique	Exploit Public-Facing Application (T1190)
Severity	Medium

A potentially malicious HTTP request was received, possibly as part of a Spring4Shell exploitation attempt.

Gain the ability to execute code remotely or drop malware.