Malicious Consent to Known Traitorware Mail Clients via Azure AD

ATT&CK techniques

Initial Access → Defense Evasion

Recon
Resource Dev
Initial Access
- T1078.004Cloud Accounts
Execution
Persistence
- T1078.004Cloud Accounts
- T1098.002Additional Email Delegate Permissions
Priv Esc
- T1078.004Cloud Accounts
- T1098.002Additional Email Delegate Permissions
Defense Evasion
- T1078.004Cloud Accounts
Cred Access
Discovery
Lateral Movement
Collection
C2
Exfiltration
Impact

What it detects

This rule detects tenant consent grants to the eM Client and SuperMailer applications abused as traitorware in the Huntress Microsoft 365 compromise. Attackers register these legitimate desktop mail apps as service principals to retain covert access to victim mailboxes, so consent to them in an unmanaged tenant is a strong persistence signal.

Reporting behind it

Related detections9 linkedT1078.004 — drag to rearrange

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Suspicious AiTM Session Cookie Exfiltration to log_cookie Endpoint

Possible SES Sending Configuration Enumeration via CloudTrail

Suspicious AWS Role Assumption via Cognito Web Identity

Malicious Consent to Known Traitorware Mail Clients via Azure AD

Pivot detection · T1078.004 · 9 related

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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