Azure mailbox rule creation

Synopsis

Field	Value
Activation Period	14 Days
Training Period	30 Days
Test Period	N/A (single event)
Deduplication Period	5 Days
Required Data	Requires one of the following data sources: Azure Audit Log OR Microsoft Graph Logs
Detection Modules	Cloud
Detector Tags	Microsoft Graph Activity Logs
ATT&CK Tactic	Collection (TA0009), Stealth (TA0005)
ATT&CK Technique	Email Collection: Email Forwarding Rule (T1114.003), Indicator Removal: Clear Mailbox Data (T1070.008)
Severity	Informational

Description

A Mailbox rule in Azure was created.

Attacker's Goals

Intercept or exfiltrate sensitive information.

Investigative actions

• Investigate the rule's details and confirm its legitimacy.
• Look for any unusual behavior originated from the suspected identity, and check if they're compromised.

Variations

Unusual Azure mailbox rule creation

Synopsis

Field	Value
ATT&CK Tactic	Collection (TA0009), Stealth (TA0005)
ATT&CK Technique	Email Collection: Email Forwarding Rule (T1114.003), Indicator Removal: Clear Mailbox Data (T1070.008)
Severity	Low

Description

A Mailbox rule in Azure was created.

Attacker's Goals

Intercept or exfiltrate sensitive information.

Investigative actions

• Investigate the rule's details and confirm its legitimacy.
• Look for any unusual behavior originated from the suspected identity, and check if they're compromised.