Kubernetes GCP detect service accounts forbidden failure access
THIS IS A DEPRECATED DETECTION
This detection has been marked deprecated by the Splunk Threat Research team. This means that it will no longer be maintained or supported.
Description
This search provides information on Kubernetes service accounts with failure or forbidden access status, this search can be extended by using top or rare operators to find trends or rarities in failure status, user agents, source IPs and request URI
- Type: Hunting
-
Product: Splunk Enterprise, Splunk Enterprise Security, Splunk Cloud
- Last Updated: 2020-06-23
- Author: Rod Soto, Splunk
- ID: 7094808d-432a-48e7-bb3c-77e96c894f3b
Annotations
ATT&CK
Kill Chain Phase
NIST
- DE.AE
CIS20
- CIS 10
CVE
Search
1
2
3
4
`google_gcp_pubsub_message` system:serviceaccounts data.protoPayload.response.status.allowed!=*
| table src_ip src_user http_user_agent data.protoPayload.response.spec.resourceAttributes.namespace data.resource.labels.cluster_name data.protoPayload.response.spec.resourceAttributes.verb data.protoPayload.request.status.allowed data.protoPayload.response.status.reason data.labels.authorization.k8s.io/decision
| dedup src_ip src_user
| `kubernetes_gcp_detect_service_accounts_forbidden_failure_access_filter`
Macros
The SPL above uses the following Macros:
kubernetes_gcp_detect_service_accounts_forbidden_failure_access_filter is a empty macro by default. It allows the user to filter out any results (false positives) without editing the SPL.
Required fields
List of fields required to use this analytic.
- _time
How To Implement
You must install splunk add on for GCP. This search works with pubsub messaging service logs.
Known False Positives
This search can give false positives as there might be inherent issues with authentications and permissions at cluster.
Associated Analytic Story
RBA
Risk Score | Impact | Confidence | Message |
---|---|---|---|
25.0 | 50 | 50 | tbd |
The Risk Score is calculated by the following formula: Risk Score = (Impact * Confidence/100). Initial Confidence and Impact is set by the analytic author.
Reference
Test Dataset
Replay any dataset to Splunk Enterprise by using our replay.py
tool or the UI.
Alternatively you can replay a dataset into a Splunk Attack Range
source | version: 1