OCI - Discovery activity

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Id	61f995d7-8038-4ff0-ad2b-eccfd18fcc8c
Rulename	OCI - Discovery activity
Description	Detects possible discovery activity.
Severity	Medium
Tactics	Discovery
Techniques	T1580
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/OCIDiscoveryActivity.yaml
Version	1.0.0
Arm template	61f995d7-8038-4ff0-ad2b-eccfd18fcc8c.json

KQL

let threshold = 20;
OCILogs
| where data_eventName_s startswith 'List' or data_eventName_s startswith 'Get'
| summarize count() by data_definedTags_Oracle_Tags_CreatedBy_s, bin(TimeGenerated, 10m)
| where count_ > threshold
| extend AccountCustomEntity = data_definedTags_Oracle_Tags_CreatedBy_s

YAML

triggerThreshold: 0
entityMappings:
- entityType: Account
  fieldMappings:
  - identifier: Name
    columnName: AccountCustomEntity
requiredDataConnectors:
- dataTypes:
  - OCILogs
  connectorId: OracleCloudInfrastructureLogsConnector
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Oracle Cloud Infrastructure/Analytic Rules/OCIDiscoveryActivity.yaml
name: OCI - Discovery activity
relevantTechniques:
- T1580
status: Available
version: 1.0.0
queryPeriod: 1h
kind: Scheduled
id: 61f995d7-8038-4ff0-ad2b-eccfd18fcc8c
query: |
  let threshold = 20;
  OCILogs
  | where data_eventName_s startswith 'List' or data_eventName_s startswith 'Get'
  | summarize count() by data_definedTags_Oracle_Tags_CreatedBy_s, bin(TimeGenerated, 10m)
  | where count_ > threshold
  | extend AccountCustomEntity = data_definedTags_Oracle_Tags_CreatedBy_s  
description: |
    'Detects possible discovery activity.'
queryFrequency: 1h
severity: Medium
triggerOperator: gt
tactics:
- Discovery

ARM