Speculus - Network traffic to or from high-risk IP indicator

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Id	a7c3f9e2-4d18-4b6a-9f0c-2e5d8b1a6c43
Rulename	Speculus - Network traffic to or from high-risk IP indicator
Description	Matches network events in CommonSecurityLog against high-risk Speculus IP indicators (risk score >= 75) received in the last 14 days. These IPs are associated with malicious activity such as command and control, botnets, ransomware infrastructure, or brute-force campaigns.
Severity	High
Tactics	CommandAndControl InitialAccess
Techniques	T1071 T1090
Required data connectors	SpeculusThreatIntel
Kind	Scheduled
Query frequency	1h
Query period	14d
Trigger threshold	0
Trigger operator	gt
Source Uri	https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Speculus%20Threat%20Intelligence/Analytic%20Rules/Speculus%20-%20IP%20Indicator%20Match%20CommonSecurityLog.yaml
Version	1.0.0
Arm template	a7c3f9e2-4d18-4b6a-9f0c-2e5d8b1a6c43.json

KQL

let indicators = Speculus_Indicators_CL
    | where TimeGenerated > ago(14d)
    | where isnotempty(IndicatorValue)
    | where RiskScore >= 75
    | summarize arg_max(Modified, *) by IndicatorValue
    | project
        IndicatorValue,
        RiskScore,
        SpeculusActivity = Activity,
        Attribution,
        Labels,
        IndicatorDescription = Description;
CommonSecurityLog
| where TimeGenerated > ago(1h)
| where isnotempty(SourceIP) or isnotempty(DestinationIP)
| extend MatchIP = iff(isnotempty(DestinationIP), DestinationIP, SourceIP)
| join kind=inner indicators on $left.MatchIP == $right.IndicatorValue
| project
    TimeGenerated,
    MatchIP,
    SourceIP,
    DestinationIP,
    DeviceVendor,
    DeviceProduct,
    RiskScore,
    SpeculusActivity,
    Attribution,
    Labels,
    IndicatorDescription

YAML

suppressionDuration: 1h
name: Speculus - Network traffic to or from high-risk IP indicator
suppressionEnabled: false
triggerOperator: gt
query: |
  let indicators = Speculus_Indicators_CL
      | where TimeGenerated > ago(14d)
      | where isnotempty(IndicatorValue)
      | where RiskScore >= 75
      | summarize arg_max(Modified, *) by IndicatorValue
      | project
          IndicatorValue,
          RiskScore,
          SpeculusActivity = Activity,
          Attribution,
          Labels,
          IndicatorDescription = Description;
  CommonSecurityLog
  | where TimeGenerated > ago(1h)
  | where isnotempty(SourceIP) or isnotempty(DestinationIP)
  | extend MatchIP = iff(isnotempty(DestinationIP), DestinationIP, SourceIP)
  | join kind=inner indicators on $left.MatchIP == $right.IndicatorValue
  | project
      TimeGenerated,
      MatchIP,
      SourceIP,
      DestinationIP,
      DeviceVendor,
      DeviceProduct,
      RiskScore,
      SpeculusActivity,
      Attribution,
      Labels,
      IndicatorDescription
queryFrequency: 1h
description: |
  'Matches network events in CommonSecurityLog against high-risk Speculus IP indicators (risk score >= 75)
  received in the last 14 days. These IPs are associated with malicious activity such as command and control,
  botnets, ransomware infrastructure, or brute-force campaigns.'
id: a7c3f9e2-4d18-4b6a-9f0c-2e5d8b1a6c43
triggerThreshold: 0
queryPeriod: 14d
version: 1.0.0
kind: Scheduled
customDetails:
  Labels: Labels
  Attribution: Attribution
  RiskScore: RiskScore
status: Available
eventGroupingSettings:
  aggregationKind: AlertPerResult
severity: High
requiredDataConnectors:
- connectorId: SpeculusThreatIntel
  dataTypes:
  - Speculus_Indicators_CL
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Speculus%20Threat%20Intelligence/Analytic%20Rules/Speculus%20-%20IP%20Indicator%20Match%20CommonSecurityLog.yaml
incidentConfiguration:
  groupingConfiguration:
    lookbackDuration: 1d
    enabled: true
    reopenClosedIncident: false
    matchingMethod: Selected
    groupByEntities:
    - IP
  createIncident: true
relevantTechniques:
- T1071
- T1090
tactics:
- CommandAndControl
- InitialAccess
entityMappings:
- fieldMappings:
  - identifier: Address
    columnName: MatchIP
  entityType: IP

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/a7c3f9e2-4d18-4b6a-9f0c-2e5d8b1a6c43')]",
      "kind": "Scheduled",
      "name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/a7c3f9e2-4d18-4b6a-9f0c-2e5d8b1a6c43')]",
      "properties": {
        "alertRuleTemplateName": "a7c3f9e2-4d18-4b6a-9f0c-2e5d8b1a6c43",
        "customDetails": {
          "Attribution": "Attribution",
          "Labels": "Labels",
          "RiskScore": "RiskScore"
        },
        "description": "'Matches network events in CommonSecurityLog against high-risk Speculus IP indicators (risk score >= 75)\nreceived in the last 14 days. These IPs are associated with malicious activity such as command and control,\nbotnets, ransomware infrastructure, or brute-force campaigns.'\n",
        "displayName": "Speculus - Network traffic to or from high-risk IP indicator",
        "enabled": true,
        "entityMappings": [
          {
            "entityType": "IP",
            "fieldMappings": [
              {
                "columnName": "MatchIP",
                "identifier": "Address"
              }
            ]
          }
        ],
        "eventGroupingSettings": {
          "aggregationKind": "AlertPerResult"
        },
        "incidentConfiguration": {
          "createIncident": true,
          "groupingConfiguration": {
            "enabled": true,
            "groupByEntities": [
              "IP"
            ],
            "lookbackDuration": "P1D",
            "matchingMethod": "Selected",
            "reopenClosedIncident": false
          }
        },
        "OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Speculus%20Threat%20Intelligence/Analytic%20Rules/Speculus%20-%20IP%20Indicator%20Match%20CommonSecurityLog.yaml",
        "query": "let indicators = Speculus_Indicators_CL\n    | where TimeGenerated > ago(14d)\n    | where isnotempty(IndicatorValue)\n    | where RiskScore >= 75\n    | summarize arg_max(Modified, *) by IndicatorValue\n    | project\n        IndicatorValue,\n        RiskScore,\n        SpeculusActivity = Activity,\n        Attribution,\n        Labels,\n        IndicatorDescription = Description;\nCommonSecurityLog\n| where TimeGenerated > ago(1h)\n| where isnotempty(SourceIP) or isnotempty(DestinationIP)\n| extend MatchIP = iff(isnotempty(DestinationIP), DestinationIP, SourceIP)\n| join kind=inner indicators on $left.MatchIP == $right.IndicatorValue\n| project\n    TimeGenerated,\n    MatchIP,\n    SourceIP,\n    DestinationIP,\n    DeviceVendor,\n    DeviceProduct,\n    RiskScore,\n    SpeculusActivity,\n    Attribution,\n    Labels,\n    IndicatorDescription\n",
        "queryFrequency": "PT1H",
        "queryPeriod": "P14D",
        "severity": "High",
        "status": "Available",
        "subTechniques": [],
        "suppressionDuration": "PT1H",
        "suppressionEnabled": false,
        "tactics": [
          "CommandAndControl",
          "InitialAccess"
        ],
        "techniques": [
          "T1071",
          "T1090"
        ],
        "templateVersion": "1.0.0",
        "triggerOperator": "GreaterThan",
        "triggerThreshold": 0
      },
      "type": "Microsoft.OperationalInsights/workspaces/providers/alertRules"
    }
  ]
}