Azure Key Vault Modified or Deleted

Description

Identifies when a key vault is modified or deleted.

Query · sigma

selection:
  operationName:
  - MICROSOFT.KEYVAULT/VAULTS/WRITE
  - MICROSOFT.KEYVAULT/VAULTS/DELETE
  - MICROSOFT.KEYVAULT/VAULTS/DEPLOY/ACTION
  - MICROSOFT.KEYVAULT/VAULTS/ACCESSPOLICIES/WRITE
condition: selection

Known false positives

  • Key Vault being modified or deleted may be performed by a system administrator.
  • Verify whether the user identity, user agent, and/or hostname should be making changes in your environment.
  • Key Vault modified or deleted from unfamiliar users should be investigated. If known behavior is causing false positives, it can be exempted from the rule.
Raw source Azure Key Vault Modified or Deleted · Sigma
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Published by SigmaHQ/sigma ↗, licensed under Detection Rule License 1.1 ↗. Reproduced here unmodified. 
title: Azure Key Vault Modified or Deleted
id: 459a2970-bb84-4e6a-a32e-ff0fbd99448d
status: test
description: Identifies when a key vault is modified or deleted.
references:
    - https://learn.microsoft.com/en-us/azure/role-based-access-control/resource-provider-operations
author: Austin Songer @austinsonger
date: 2021-08-16
modified: 2022-08-23
tags:
    - attack.impact
    - attack.credential-access
    - attack.t1552
    - attack.t1552.001
logsource:
    product: azure
    service: activitylogs
detection:
    selection:
        operationName:
            - MICROSOFT.KEYVAULT/VAULTS/WRITE
            - MICROSOFT.KEYVAULT/VAULTS/DELETE
            - MICROSOFT.KEYVAULT/VAULTS/DEPLOY/ACTION
            - MICROSOFT.KEYVAULT/VAULTS/ACCESSPOLICIES/WRITE
    condition: selection
falsepositives:
    - Key Vault being modified or deleted may be performed by a system administrator.
    - Verify whether the user identity, user agent, and/or hostname should be making changes in your environment.
    - Key Vault modified or deleted from unfamiliar users should be investigated. If known behavior is causing false positives, it can be exempted from the rule.
level: medium

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