Potential SAP NetWeaver Webshell Creation - Linux

calendar Oct 23, 2025 · attack.execution attack.initial-access attack.t1190 attack.persistence attack.t1059.003 cve.2025-31324 detection.emerging-threats  ·
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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.

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 1title: Potential SAP NetWeaver Webshell Creation - Linux
 2id: 5b91409c-cb18-4ab6-ac75-c5759f998409
 3status: experimental
 4description: |
 5    Detects the creation of suspicious files (jsp, java, class) in SAP NetWeaver directories,
 6    which may indicate exploitation attempts of vulnerabilities such as CVE-2025-31324.    
 7references:
 8    - https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2025-31324
 9    - https://reliaquest.com/blog/threat-spotlight-reliaquest-uncovers-vulnerability-behind-sap-netweaver-compromise/
10    - https://onapsis.com/blog/active-exploitation-of-sap-vulnerability-cve-2025-31324/
11author: Elastic (idea), Swachchhanda Shrawan Poudel (Nextron Systems)
12date: 2025-04-28
13tags:
14    - attack.execution
15    - attack.initial-access
16    - attack.t1190
17    - attack.persistence
18    - attack.t1059.003
19    - cve.2025-31324
20    - detection.emerging-threats
21logsource:
22    product: linux
23    category: file_event
24detection:
25    selection_path:
26        TargetFilename|contains:
27            - '/j2ee/cluster/apps/sap.com/irj/servlet_jsp/irj/work/'
28            - '/j2ee/cluster/apps/sap.com/irj/servlet_jsp/irj/root/'
29    selection_ext:
30        TargetFilename|endswith:
31            - '.jsp'
32            - '.java'
33            - '.class'
34    condition: all of selection_*
35falsepositives:
36    - Legitimate creation of jsc or java files in these locations
37level: medium

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