Unusual Conditional Access operation for an identity

Cortex XDR Analytics Alert Reference by Alert name

Product
Cortex XDR
Last date published
2024-06-04
Category
Analytics Alert Reference
Order
Alert name

Synopsis

Activation Period

14 Days

Training Period

30 Days

Test Period

N/A (single event)

Deduplication Period

1 Day

Required Data

  • Requires:
    • AzureAD Audit Log

Detection Modules

Identity Threat Module

ATT&CK Tactic

Defense Evasion (TA0005)

ATT&CK Technique

Abuse Elevation Control Mechanism (T1548)

Severity

Informational

Description

An identity attempted to add or update an Azure AD Conditional Access policy.

Attacker's Goals

  • An attacker attempts to change Active Directory configuration for persistence or defense evasion.
  • With a modified Conditional Access policy, an attacker might be able to access the tenant without possible blockage for later access.

Investigative actions

  • Check implications of the updated policy.
  • Check whether the user changing the configuration is permitted to perform such actions.

Variations

Suspicious Conditional Access operation for an identity

Synopsis

ATT&CK Tactic

Defense Evasion (TA0005)

ATT&CK Technique

Abuse Elevation Control Mechanism (T1548)

Severity

Low

Description

An identity that doesn't usually modify Azure AD Conditional Access policies successfully modified a policy.

Attacker's Goals

  • An attacker attempts to change Active Directory configuration for persistence or defense evasion.
  • With a modified Conditional Access policy, an attacker might be able to access the tenant without possible blockage for later access.

Investigative actions

  • Check implications of the updated policy.
  • Check whether the user changing the configuration is permitted to perform such actions.