huntrule

WordPress REST Batch Endpoint (wp2shell) POST Exploitation Activity

Alert on POST requests containing rest_route=/batch/v1 that return HTTP 207, consistent with wp2shell-style REST batch probing/exploitation.

FreeReviewedSigma · Medium · v5
Category
webserver
Author
Swachchhanda Shrawan Poudel (Nextron Systems) (SigmaHQ), DRL 1.1
Published
2026-07-19
Updated
2026-07-31
AnalysisDetection

ATT&CK techniques

Initial Access

  1. Recon

  2. Resource Dev

  3. Initial Access

  4. Execution

  5. Persistence

  6. Priv Esc

  7. Defense Evasion

  8. Cred Access

  9. Discovery

  10. Lateral Movement

  11. Collection

  12. C2

  13. Exfiltration

  14. Impact

What it detects

This rule flags requests that attempt to exploit the WordPress REST batch endpoint by sending HTTP POST traffic with a query parameter containing /batch/v1. It relies on webserver telemetry that records the HTTP method, the response status code, and the full request URI query, and it matches only when the server returns a 207 status that indicates the batch endpoint is reachable. The intent is to capture wp2shell-style probing and exploitation activity, where attackers leverage the batch route to progress through pre-auth exploitation stages.

Reporting behind it

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WordPress REST Batch Endpoint (wp2shell) POST Exploitation Activity
Pivot detection · T1190 · 9 related

Changelog

v5
  1. v5
    Candidate ingested via manual entry.2026-07-31
  2. v4
    Candidate ingested via manual entry.2026-07-31
  3. v3
    Candidate ingested via manual entry.2026-07-31
  4. v2
    Candidate ingested via manual entry.2026-07-31
  5. v1
    No changelog recorded for this version.2026-07-30

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