Exchange WebShell Creation

PremiumReviewedSigma · Medium · v1
Product
windows
Category
process_creation
Author
HuntRule
Published
2026-05-30
Updated
2026-08-28

ATT&CK techniques

Initial Access → Persistence
  1. Recon

  2. Resource Dev

  3. Execution

  4. Priv Esc

  5. Defense Evasion

  6. Cred Access

  7. Discovery

  8. Lateral Movement

  9. Collection

  10. C2

  11. Exfiltration

  12. Impact

What it detects

These commands were used to create a WebShell by exploiting ProxyShell vulnerabilities

Related detections9 linkedT1190 — drag to rearrange
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Possible DotCMS Path Traversal Webshell Upload via content API CVE-2022-26352
Possible Avaya Aura Device Services WebDAV PHP Webshell Upload via PhoneBackup (via webserver)
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Possible PHP Webshell Access After Malicious ZIP Upload (via webserver)
Possible Oracle Opera CGI Webshell Command Execution via operabin
Possible Pre-Auth Webshell Upload via Oracle Opera FileReceiver Servlet
Exchange WebShell Creation
Pivot detection · T1190 · 9 related

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