Malicious JSP Webshell Written to SAP NetWeaver Servlet Directory
- Category
- file_event
- Author
- HuntRule
- Published
- 2026-08-08
- Updated
- 2026-08-28
ATT&CK techniques
Initial Access → PersistenceRecon
Resource Dev
Initial Access
Execution
Persistence
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
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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