OCI - Multiple instances terminated

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Id	252e651d-d825-480c-bdeb-8b239354577d
Rulename	OCI - Multiple instances terminated
Description	Detects when multiple instances were terminated.
Severity	High
Tactics	Impact
Techniques	T1529
Required data connectors	OracleCloudInfrastructureLogsConnector
Kind	Scheduled
Query frequency	1h
Query period	1h
Trigger threshold	0
Trigger operator	gt
Source Uri	https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Oracle Cloud Infrastructure/Analytic Rules/OCIMultipleInstancesTerminated.yaml
Version	1.0.1
Arm template	252e651d-d825-480c-bdeb-8b239354577d.json

KQL

let threshold = 5;
OCILogs
| where data_eventName_s =~ 'TerminateInstance'
| summarize count() by SrcIpAddr, bin(TimeGenerated, 10m)
| where count_ >= threshold
| extend IPCustomEntity = SrcIpAddr

YAML

name: OCI - Multiple instances terminated
kind: Scheduled
tactics:
- Impact
triggerThreshold: 0
triggerOperator: gt
version: 1.0.1
status: Available
queryFrequency: 1h
id: 252e651d-d825-480c-bdeb-8b239354577d
requiredDataConnectors:
- connectorId: OracleCloudInfrastructureLogsConnector
  dataTypes:
  - OCILogs
relevantTechniques:
- T1529
description: |
    'Detects when multiple instances were terminated.'
entityMappings:
- entityType: IP
  fieldMappings:
  - columnName: IPCustomEntity
    identifier: Address
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Oracle Cloud Infrastructure/Analytic Rules/OCIMultipleInstancesTerminated.yaml
queryPeriod: 1h
severity: High
query: |
  let threshold = 5;
  OCILogs
  | where data_eventName_s =~ 'TerminateInstance'
  | summarize count() by SrcIpAddr, bin(TimeGenerated, 10m)
  | where count_ >= threshold
  | extend IPCustomEntity = SrcIpAddr

ARM