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MediumSigmaHQ Austin Songer @austinsonger

Azure Kubernetes Service Account Modified or Deleted

Identifies when a service account is modified or deleted.

Detection logic

Detection requirements

Platform: Containers ESXi IaaS Linux macOS Office Suite SaaS Windows
The rule states no platform. This is derived from the 4 ATT&CK techniques it maps to.
Log source product: azure
Log source service: activitylogs

Known benign triggers

Service account 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.
Service account modified or deleted from unfamiliar users should be investigated. If known behavior is causing false positives, it can be exempted from the rule.

References

Links the source published beside this detection. Reference is the link the source wrote, unmodified. Class is decided by this catalogue from the host and path, not stated by the source. Cited by counts published detections citing the same resource, including this one, and the sources beneath it count the repositories this catalogue ingests, which is not the same as independent research.
Reference	Class	Cited by
learn.microsoft.com/en-us/azure/role-based-access-control/resource-provider-operations#microsoftkubernetes	Product documentation	29
medium.com/mitre-engenuity/att-ck-for-containers-now-available-4c2359654bf1	Unclassified	7
www.microsoft.com/security/blog/2020/04/02/attack-matrix-kubernetes/	Threat report	9from 2 sources
www.microsoft.com/security/blog/2021/03/23/secure-containerized-environments-with-updated-threat-matrix-for-kubernetes/	Threat report	7

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