Detection rules › Sigma
Potential SAP NetWeaver Webshell Creation
Detects the creation of suspicious files (jsp, java, class) in SAP NetWeaver directories, which may indicate exploitation attempts of vulnerabilities such as CVE-2025-31324.
MITRE ATT&CK coverage
| Tactic | Techniques |
|---|---|
| Initial Access | T1190 Exploit Public-Facing Application |
| Execution | T1059.003 Command and Scripting Interpreter: Windows Command Shell |
Event coverage
| Provider | Event | Title |
|---|---|---|
| Sysmon | Event ID 11 | FileCreate |
Rule body yaml
title: Potential SAP NetWeaver Webshell Creation
id: 86a7c91f-98c3-4f14-a58d-d989421e1234
status: experimental
description: |
Detects the creation of suspicious files (jsp, java, class) in SAP NetWeaver directories,
which may indicate exploitation attempts of vulnerabilities such as CVE-2025-31324.
references:
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2025-31324
- https://reliaquest.com/blog/threat-spotlight-reliaquest-uncovers-vulnerability-behind-sap-netweaver-compromise/
- https://onapsis.com/blog/active-exploitation-of-sap-vulnerability-cve-2025-31324/
author: Elastic (idea), Swachchhanda Shrawan Poudel (Nextron Systems)
date: 2025-04-28
tags:
- attack.execution
- attack.initial-access
- attack.t1190
- attack.persistence
- attack.t1059.003
- cve.2025-31324
- detection.emerging-threats
logsource:
product: windows
category: file_event
detection:
selection_path:
TargetFilename|contains:
- '\j2ee\cluster\apps\sap.com\irj\servlet_jsp\irj\work'
- '\j2ee\cluster\apps\sap.com\irj\servlet_jsp\irj\root'
selection_ext:
TargetFilename|endswith:
- '.jsp'
- '.java'
- '.class'
condition: all of selection_*
falsepositives:
- Legitimate creation of jsc or java files in these locations
level: medium
Stages and Predicates
Stage 0: condition
all of selection_*Stage 1: selection_path
selection_path:
TargetFilename|contains:
- '\j2ee\cluster\apps\sap.com\irj\servlet_jsp\irj\work'
- '\j2ee\cluster\apps\sap.com\irj\servlet_jsp\irj\root'
Stage 2: selection_ext
selection_ext:
TargetFilename|endswith:
- '.jsp'
- '.java'
- '.class'
Indicators
Each row is a field, operator, and value that the rule matches. The corpus column counts how many other rules in the catalog look for the same combination: high numbers point to widely-used, community-vetted indicators. Blank or 1 shows that the indicator is specific to this rule.
| Field | Kind | Values |
|---|---|---|
TargetFilename | ends_with |
|
TargetFilename | match |
|