Analytics BIOC Low

Exchange Safe Attachment policy disabled or removed

A user disabled an Exchange Safe Attachment policy, which provides phishing protection to email attachments.

Module:
Identity Threat Detection (ITDR), SaaS Threat Detection, Email Security
Licensed by:
Identity Threat Detection (ITDR)
Licensed by:
Email Security
Data source:
Office 365 Audit
ATT&CK tactics: Defense Evasion (TA0005) Initial Access (TA0001)
ATT&CK techniques: Impair Defenses: Disable or Modify Tools (T1562.001) Phishing: Spearphishing Attachment (T1566.001)
Attacker's goals:

An attacker may attempt to disable the Safe Attachment policy to evade detection.

Investigative actions:

Follow further actions done by the account. Verify that the configuration change was expected. Check for a possible phishing campaign on the organization.

Test period:
N/A (single event)
Deduplication:
1 Day