detection.wiki

Detection rules › Sigma

Azure Kubernetes Cluster Created or Deleted

Status
test
Severity
low
Log source
product azure, service activitylogs
Author
Austin Songer @austinsonger
Source
github.com/SigmaHQ/sigma

Detects when a Azure Kubernetes Cluster is created or deleted.

MITRE ATT&CK coverage

TacticTechniques
ImpactT1485 Data Destruction, T1489 Service Stop, T1496 Resource Hijacking

Event coverage

ProviderEvent
Azure-Microsoft.KubernetesMicrosoft.Kubernetes/connectedClusters/delete
Azure-Microsoft.KubernetesMicrosoft.Kubernetes/connectedClusters/write

Rule body yaml

title: Azure Kubernetes Cluster Created or Deleted
id: 9541f321-7cba-4b43-80fc-fbd1fb922808
status: test
description: Detects when a Azure Kubernetes Cluster is created or deleted.
references:
    - https://learn.microsoft.com/en-us/azure/role-based-access-control/resource-provider-operations#microsoftkubernetes
    - https://www.microsoft.com/security/blog/2021/03/23/secure-containerized-environments-with-updated-threat-matrix-for-kubernetes/
    - https://www.microsoft.com/security/blog/2020/04/02/attack-matrix-kubernetes/
    - https://medium.com/mitre-engenuity/att-ck-for-containers-now-available-4c2359654bf1
author: Austin Songer @austinsonger
date: 2021-08-07
modified: 2022-08-23
tags:
    - attack.impact
    - attack.t1485
    - attack.t1496
    - attack.t1489
logsource:
    product: azure
    service: activitylogs
detection:
    selection:
        operationName:
            - MICROSOFT.KUBERNETES/CONNECTEDCLUSTERS/WRITE
            - MICROSOFT.KUBERNETES/CONNECTEDCLUSTERS/DELETE
    condition: selection
falsepositives:
    - Kubernetes cluster being created 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.
    - Kubernetes cluster created or deleted from unfamiliar users should be investigated. If known behavior is causing false positives, it can be exempted from the rule.
level: low

Stages and Predicates

Stage 0: condition

selection

Stage 1: selection

selection:
    operationName:
        - MICROSOFT.KUBERNETES/CONNECTEDCLUSTERS/WRITE
        - MICROSOFT.KUBERNETES/CONNECTEDCLUSTERS/DELETE

Indicators

Each row is a field, operator, and value that the rule matches. The corpus column counts how many other rules in the catalog look for the same combination: high numbers point to widely-used, community-vetted indicators. Blank or 1 shows that the indicator is specific to this rule.

FieldKindValues
operationNameeq
  • MICROSOFT.KUBERNETES/CONNECTEDCLUSTERS/DELETE
  • MICROSOFT.KUBERNETES/CONNECTEDCLUSTERS/WRITE