Speculus - Threat intelligence feed outage | Microsoft Sentinel Analytic Rules

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Id	c4f2a8d1-6e39-4c07-b5a2-1d8e3f7c9a25
Rulename	Speculus - Threat intelligence feed outage
Description	Detects when no Speculus threat intelligence indicators have been received for more than 24 hours. The Speculus indexer refreshes continuously, so a silent day usually means an expired API key, a connector misconfiguration, or a feed-side outage rather than an empty feed.
Severity	Informational
Tactics	Impact
Techniques	T1565
Required data connectors	SpeculusThreatIntel
Kind	Scheduled
Query frequency	6h
Query period	2d
Trigger threshold	0
Trigger operator	gt
Source Uri	https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Speculus%20Threat%20Intelligence/Analytic%20Rules/Speculus%20-%20Feed%20Outage%20Detection.yaml
Version	1.0.0
Arm template	c4f2a8d1-6e39-4c07-b5a2-1d8e3f7c9a25.json

KQL

Speculus_Indicators_CL
| summarize LastReceived = max(TimeGenerated)
| where isnull(LastReceived) or LastReceived < ago(1d)
| extend
    HoursSinceLastIndicator = iff(isnull(LastReceived), long(null), datetime_diff('hour', now(), LastReceived)),
    Status = iff(isnull(LastReceived), 'No data ever received in query period', 'Feed silent for more than 24 hours')

YAML

suppressionDuration: 1d
name: Speculus - Threat intelligence feed outage
suppressionEnabled: true
triggerOperator: gt
query: |
  Speculus_Indicators_CL
  | summarize LastReceived = max(TimeGenerated)
  | where isnull(LastReceived) or LastReceived < ago(1d)
  | extend
      HoursSinceLastIndicator = iff(isnull(LastReceived), long(null), datetime_diff('hour', now(), LastReceived)),
      Status = iff(isnull(LastReceived), 'No data ever received in query period', 'Feed silent for more than 24 hours')
queryFrequency: 6h
description: |
  'Detects when no Speculus threat intelligence indicators have been received for more than 24 hours.
  The Speculus indexer refreshes continuously, so a silent day usually means an expired API key,
  a connector misconfiguration, or a feed-side outage rather than an empty feed.'
id: c4f2a8d1-6e39-4c07-b5a2-1d8e3f7c9a25
triggerThreshold: 0
queryPeriod: 2d
version: 1.0.0
kind: Scheduled
customDetails:
  Status: Status
  HoursSinceLast: HoursSinceLastIndicator
status: Available
eventGroupingSettings:
  aggregationKind: SingleAlert
severity: Informational
requiredDataConnectors:
- connectorId: SpeculusThreatIntel
  dataTypes:
  - Speculus_Indicators_CL
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Speculus%20Threat%20Intelligence/Analytic%20Rules/Speculus%20-%20Feed%20Outage%20Detection.yaml
incidentConfiguration:
  groupingConfiguration:
    lookbackDuration: 1d
    reopenClosedIncident: false
    matchingMethod: AllEntities
    enabled: true
  createIncident: true
relevantTechniques:
- T1565
tactics:
- Impact

ARM

{
  "$schema": "https://schema.management.azure.com/schemas/2019-04-01/deploymentTemplate.json#",
  "contentVersion": "1.0.0.0",
  "parameters": {
    "workspace": {
      "type": "String"
    }
  },
  "resources": [
    {
      "apiVersion": "2024-01-01-preview",
      "id": "[concat(resourceId('Microsoft.OperationalInsights/workspaces/providers', parameters('workspace'), 'Microsoft.SecurityInsights'),'/alertRules/c4f2a8d1-6e39-4c07-b5a2-1d8e3f7c9a25')]",
      "kind": "Scheduled",
      "name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/c4f2a8d1-6e39-4c07-b5a2-1d8e3f7c9a25')]",
      "properties": {
        "alertRuleTemplateName": "c4f2a8d1-6e39-4c07-b5a2-1d8e3f7c9a25",
        "customDetails": {
          "HoursSinceLast": "HoursSinceLastIndicator",
          "Status": "Status"
        },
        "description": "'Detects when no Speculus threat intelligence indicators have been received for more than 24 hours.\nThe Speculus indexer refreshes continuously, so a silent day usually means an expired API key,\na connector misconfiguration, or a feed-side outage rather than an empty feed.'\n",
        "displayName": "Speculus - Threat intelligence feed outage",
        "enabled": true,
        "entityMappings": null,
        "eventGroupingSettings": {
          "aggregationKind": "SingleAlert"
        },
        "incidentConfiguration": {
          "createIncident": true,
          "groupingConfiguration": {
            "enabled": true,
            "lookbackDuration": "P1D",
            "matchingMethod": "AllEntities",
            "reopenClosedIncident": false
          }
        },
        "OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Speculus%20Threat%20Intelligence/Analytic%20Rules/Speculus%20-%20Feed%20Outage%20Detection.yaml",
        "query": "Speculus_Indicators_CL\n| summarize LastReceived = max(TimeGenerated)\n| where isnull(LastReceived) or LastReceived < ago(1d)\n| extend\n    HoursSinceLastIndicator = iff(isnull(LastReceived), long(null), datetime_diff('hour', now(), LastReceived)),\n    Status = iff(isnull(LastReceived), 'No data ever received in query period', 'Feed silent for more than 24 hours')\n",
        "queryFrequency": "PT6H",
        "queryPeriod": "P2D",
        "severity": "Informational",
        "status": "Available",
        "subTechniques": [],
        "suppressionDuration": "P1D",
        "suppressionEnabled": true,
        "tactics": [
          "Impact"
        ],
        "techniques": [
          "T1565"
        ],
        "templateVersion": "1.0.0",
        "triggerOperator": "GreaterThan",
        "triggerThreshold": 0
      },
      "type": "Microsoft.OperationalInsights/workspaces/providers/alertRules"
    }
  ]
}