Uncommon Security Info Registration Following AiTM Session Theft (via azure)
- Product
- azure
- Service
- auditlogs
- Author
- HuntRule
- Published
- 2026-07-22
- Updated
- 2026-08-28
ATT&CK techniques
Persistence → Cred AccessRecon
Resource Dev
Initial Access
Execution
Persistence
Priv Esc
Defense Evasion
Cred Access
Discovery
Lateral Movement
Collection
C2
Exfiltration
Impact
What it detects
This rule detects a user registering new security info in Entra ID, the persistence step attackers take after adversary-in-the-middle session theft to enroll their own MFA method on a compromised account. Adversaries register a controlled authenticator to retain access after the stolen session expires, making this a useful signal when correlated with anomalous or geo-infeasible sign-ins from the same account.
Reporting behind it
Detection content is published as a reviewed draft. Tune thresholds and exclusions against your own telemetry before enabling this rule for alerting.
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Also included
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