Malicious JSP Webshell Written to SAP NetWeaver Servlet Directory

ATT&CK techniques

Initial Access → Persistence

Recon
Resource Dev
Initial Access
- T1190Exploit Public-Facing Application
Execution
Persistence
- T1505.003Web Shell
Priv Esc
Defense Evasion
Cred Access
Discovery
Lateral Movement
Collection
C2
Exfiltration
Impact

What it detects

This rule detects creation of JSP webshell files with names observed in exploitation of the SAP NetWeaver CVE-2025-31324 file upload vulnerability inside servlet_jsp working directories. Adversaries drop these webshells to gain persistent remote command execution on the compromised application server. Detecting the file write surfaces web shell installation immediately after exploitation.

Reporting behind it

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Malicious JSP Webshell Written to SAP NetWeaver Servlet Directory

Pivot detection · T1190 · 9 related

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