Malicious alexantr File Manager Webshell Access after CraftCMS Compromise (via webserver)
- Category
- webserver
- Author
- HuntRule
- Published
- 2026-08-30
- Updated
- 2026-08-30
ATT&CK techniques
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 requests to a filemanager.php webshell with its upload and delete parameters, the open-source alexantr file manager dropped to the web root following CraftCMS CVE-2025-32432 exploitation. Adversaries use this webshell to browse, upload and remove files on the compromised server for hands-on-keyboard actions.
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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