Possible SharePoint ToolShell ToolPane Exploitation Attempt (via webserver)

PremiumReviewedSigma · High · v1
Category
webserver
Author
HuntRule
Published
2026-10-30
Updated
2026-10-30

ATT&CK techniques

Initial Access
  1. Recon

  2. Resource Dev

  3. Execution

  4. Persistence

  5. Priv Esc

  6. Defense Evasion

  7. Cred Access

  8. Discovery

  9. Lateral Movement

  10. Collection

  11. C2

  12. Exfiltration

  13. Impact

What it detects

This rule detects HTTP POST requests to ToolPane.aspx with the edit display mode parameter, the request pattern used to trigger the SharePoint ToolShell exploit chain for unauthenticated code execution.

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Detection content is published as a reviewed draft. Tune thresholds and exclusions against your own telemetry before enabling this rule for alerting.