IMPORTANT: No additional bug fixes or documentation updates will be released for this version. For the latest information, see the current release documentation.

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Azure Application Credential Modification

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Azure Application Credential Modification

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Identifies when a new credential is added to an application in Azure. An application may use a certificate or secret string to prove its identity when requesting a token. Multiple certificates and secrets can be added for an application and an adversary may abuse this by creating an additional authentication method to evade defenses or persist in an environment.

Rule type: query

Rule indices:

filebeat-*
logs-azure*

Severity: medium

Risk score: 47

Runs every: 5m

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

Maximum alerts per execution: 100

References:

https://msrc-blog.microsoft.com/2020/12/13/customer-guidance-on-recent-nation-state-cyber-attacks/

Tags:

Domain: Cloud
Data Source: Azure
Use Case: Identity and Access Audit
Tactic: Defense Evasion

Version: 102

Rule authors:

Elastic

Rule license: Elastic License v2

Investigation guide

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Rule query

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event.dataset:azure.auditlogs and azure.auditlogs.operation_name:"Update application - Certificates and secrets management" and event.outcome:(success or Success)

Framework: MITRE ATT&CK^TM

Tactic:
- Name: Defense Evasion
- ID: TA0005
- Reference URL: https://attack.mitre.org/tactics/TA0005/
Technique:
- Name: Use Alternate Authentication Material
- ID: T1550
- Reference URL: https://attack.mitre.org/techniques/T1550/
Sub-technique:
- Name: Application Access Token
- ID: T1550.001
- Reference URL: https://attack.mitre.org/techniques/T1550/001/

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