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Key Eater Entra ID App Secret Theft: Detection & IOCs

Key Eater abuses stolen Entra app secrets to reach 27 organizations via MSPs, with 9 detection rules, 11 IOCs and a free Splunk SPL rule.

Read the full threat intel for Key Eater Entra ID App Secret Theft: Detection & IOCs →

Chapters

  1. 0:00The hook27 organizations breached by stolen credentials.
  2. 0:05The storyOn November first, stolen credentials logged in.
  3. 0:12Attack pathSpray and stolen secrets gained direct access.
  4. 0:28AttributionNo threat actor is attributed.
  5. 0:32Indicators of compromise4 indicators to hunt: 3 IPs and 1 hosting.
  6. 0:38MITRE ATT&CK techniques10 ATT&CK techniques, from resource development to collection.
  7. 0:43Remediation5 steps now: Investigate successful AND failed service-principal sign-ins.
  8. 0:50Detection rules9 detection rules, in SPL, KQL and Sigma.
Transcript

0:0027 organizations breached by stolen credentials.

0:05On November first, stolen credentials logged in.

0:08Days later, they swept customer tenants.

0:12Spray and stolen secrets gained direct access.

0:15Tokens chained to Microsoft Graph, SharePoint, Exchange.

0:19They swept fifteen customer MSP tenants.

0:22Conditional Access blocked token replay.

0:28No threat actor is attributed. Confidence: low.

0:334 indicators to hunt: 3 IPs and 1 hosting.

0:3810 ATT&CK techniques, from resource development to collection.

0:435 steps now: Investigate successful AND failed service-principal sign-ins.

0:519 detection rules, in SPL, KQL and Sigma.

0:56Threadlinqs. The unified security engineering platform.