Bulk Deletion Changes To Privileged Account Permissions

testhigh
log source: azure · auditlogsauthor Mark Morowczynski '@markmorow', Yochana Henderson, '@Yochana-H'date 2022-08-05
01

description

What this is, in brief.

Detects when a user is removed from a privileged role. Bulk changes should be investigated.

02

tags

attack.privilege-escalationattack.persistenceattack.t1098
03

rule source (YAML)

title: Bulk Deletion Changes To Privileged Account Permissions
id: 102e11e3-2db5-4c9e-bc26-357d42585d21
status: test
description: Detects when a user is removed from a privileged role. Bulk changes should be investigated.
references:
    - https://learn.microsoft.com/en-us/entra/architecture/security-operations-privileged-identity-management#azure-ad-roles-assignment
author: Mark Morowczynski '@markmorow', Yochana Henderson, '@Yochana-H'
date: 2022-08-05
tags:
    - attack.privilege-escalation
    - attack.persistence
    - attack.t1098
logsource:
    product: azure
    service: auditlogs
detection:
    selection:
        properties.message:
            - Remove eligible member (permanent)
            - Remove eligible member (eligible)
    condition: selection
falsepositives:
    - Legtimate administrator actions of removing members from a role
level: high
04

detects techniques (1)

ATT&CK techniques this enables or maps to.

05

references

External citations — patches, advisories, analysis.