Azure Service Principal Credentials Added

Identifies when new Service Principal credentials have been added in Azure. In most organizations, credentials will be added to service principals infrequently. Hijacking an application (by adding a rogue secret or certificate) with granted permissions will allow the attacker to access data that is normally protected by MFA requirements.

Rule type: query

Rule indices:

filebeat-*
logs-azure*

Severity: medium

Risk score: 47

Runs every: 10m

Searches indices from: now-25m (Date Math format, see also Additional look-back time)

Maximum alerts per execution: 100

References:

https://www.fireeye.com/content/dam/collateral/en/wp-m-unc2452.pdf

Tags:

Elastic
Cloud
Azure
Continuous Monitoring
SecOps
Identity and Access

Version: 1

Rule authors:

Elastic
Austin Songer

Rule license: Elastic License v2

Investigation guide

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## Config

The Azure Fleet integration, Filebeat module, or similarly structured data is required to be compatible with this rule.

Rule query

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event.dataset:azure.auditlogs and azure.auditlogs.operation_name:"Add service principal credentials." and event.outcome:(success or Success)

Framework: MITRE ATT&CK^TM

Tactic:
- Name: Impact
- ID: TA0040
- Reference URL: https://attack.mitre.org/tactics/TA0040/
Technique:
- Name: Resource Hijacking
- ID: T1496
- Reference URL: https://attack.mitre.org/techniques/T1496/

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