Possible Ivanti Connect Secure Webshell Access

PremiumReviewedSigma · High · v1
Category
webserver
Author
HuntRule
Published
2026-09-14
Updated
2026-09-14

ATT&CK techniques

Persistence
  1. Recon

  2. Resource Dev

  3. Initial Access

  4. Execution

  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 access to Ivanti Connect Secure API paths and CGI scripts associated with the WIREFIRE, LIGHTWIRE, and backdoored compcheckresult webshells dropped during the zero-day exploitation. Attackers use these implanted webshells for persistent remote command execution on the appliance. Requests to these specific endpoints indicate an already-compromised device.

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Pivot detection · T1505.003 · 9 related

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