Detectionmediumtest

User State Changed From Guest To Member

Detects the change of user type from "Guest" to "Member" for potential elevation of privilege.

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Open this Sigma rule in the converter with the YAML preloaded and ready for backend selection.

Launch

Mike DuddingtonCreated Thu Jun 308dee7a0d-43fd-4b3c-8cd1-605e189d195ecloud

Log Source

Azureauditlogs

ProductAzure← raw: azure

Serviceauditlogs← raw: auditlogs

Detection Logic

detection:
    selection:
        Category: 'UserManagement'
        OperationName: 'Update user'
        properties.message: '"displayName":"UserType","oldValue":"[\"Guest\"]","newValue":"[\"Member\"]"'
    condition: selection

False Positives

If this was approved by System Administrator.

References

Resolving title…

learn.microsoft.com

MITRE ATT&CK

Tactics

TA0003 · Persistence TA0005 · Defense Evasion TA0004 · Privilege Escalation TA0001 · Initial Access

Sub-techniques

T1078.004 · Cloud Accounts

Rule Metadata

Rule ID

8dee7a0d-43fd-4b3c-8cd1-605e189d195e

Status

test

Level

medium

Type

Detection

Created

Thu Jun 30

Author

Mike Duddington

Path

rules/cloud/azure/audit_logs/azure_guest_to_member.yml

Raw Tags

attack.persistenceattack.defense-evasionattack.privilege-escalationattack.initial-accessattack.t1078.004

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