Exchange anti-phish policy disabled or removed

Synopsis

Field	Value
Activation Period	14 Days
Training Period	30 Days
Test Period	N/A (single event)
Deduplication Period	1 Day
Required Data	Office 365 Audit
Detection Modules	Identity Threat Module, SaaS Threat Detection, Email
ATT&CK Tactic	Initial Access (TA0001), Defense Impairment (TA0112)
ATT&CK Technique	Disable or Modify Tools (T1685), Phishing (T1566)
Severity	Low

Description

A user disabled or removed an Exchange anti-phish policy, which may indicate evasion of a possible phishing campaign.

Attacker's Goals

An attacker is attempting 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.

Variations

Recently configured Exchange anti-phish policy disabled or removed

Synopsis

Field	Value
ATT&CK Tactic	Initial Access (TA0001), Defense Impairment (TA0112)
ATT&CK Technique	Disable or Modify Tools (T1685), Phishing (T1566)
Severity	Informational

Description

A user disabled or removed an Exchange anti-phish policy, which may indicate evasion of a possible phishing campaign.

Attacker's Goals

An attacker is attempting 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.