HoneyLabs TI Map IP Entity to CommonSecurityLog

let dt_lookBack = 1h;
let ioc_lookBack = 14d;
let HoneyLabs_IPs = ThreatIntelIndicators
  | where TimeGenerated >= ago(ioc_lookBack)
  | where IsActive == true and ValidUntil > now()
  | summarize LatestIndicatorTime = arg_max(TimeGenerated, *) by Id
  | where SourceSystem startswith 'HoneyLabs'
  | where ObservableKey == 'ipv4-addr:value'
  | extend TI_ipEntity = tostring(ObservableValue),
           HoneyLabsConfidence = Confidence,
           HoneyLabsLabels = tostring(Data.labels),
           IndicatorDescription = tostring(Data.description),
           HoneyLabsReport = strcat('https://honeylabs.net/lookup/', tostring(ObservableValue));
HoneyLabs_IPs
| join kind=innerunique (
    CommonSecurityLog
    | where TimeGenerated >= ago(dt_lookBack)
    | where isnotempty(SourceIP)
    | extend CS_ipEntity = SourceIP
    | extend CommonSecurityLog_TimeGenerated = TimeGenerated
) on $left.TI_ipEntity == $right.CS_ipEntity
| where CommonSecurityLog_TimeGenerated < ValidUntil
| summarize CommonSecurityLog_TimeGenerated = arg_max(CommonSecurityLog_TimeGenerated, *) by Id, CS_ipEntity
| project CommonSecurityLog_TimeGenerated, IndicatorDescription, Id, ValidUntil,
  HoneyLabsConfidence, HoneyLabsLabels, HoneyLabsReport, TI_ipEntity, CS_ipEntity, LogSeverity,
  DeviceAction, SourceIP, DestinationIP, DeviceName, SourceUserName
| extend timestamp = CommonSecurityLog_TimeGenerated

name: HoneyLabs TI Map IP Entity to CommonSecurityLog
triggerOperator: gt
kind: Scheduled
queryFrequency: 1h
description: |
  'Identifies source-IP matches in CommonSecurityLog (firewall, proxy and other CEF sources) against IP indicators from HoneyLabs honeypot telemetry. A match means a source IP that ran exploit or loader commands against HoneyLabs sensors also appeared as a source in your own logs. Only the structured SourceIP field is matched; destination IPs and IPs merely mentioned inside the free-text Message are ignored, because those are frequently unrelated and generate false positives. Indicator Confidence reflects how much evidence HoneyLabs holds (90 = 100+ observed attacks, 60 = a single sighting); raise the threshold in the query to trade coverage for precision.'
id: c7061f05-d0ed-40e1-862e-bc52e454e3a1
triggerThreshold: 0
queryPeriod: 14d
query: |
  let dt_lookBack = 1h;
  let ioc_lookBack = 14d;
  let HoneyLabs_IPs = ThreatIntelIndicators
    | where TimeGenerated >= ago(ioc_lookBack)
    | where IsActive == true and ValidUntil > now()
    | summarize LatestIndicatorTime = arg_max(TimeGenerated, *) by Id
    | where SourceSystem startswith 'HoneyLabs'
    | where ObservableKey == 'ipv4-addr:value'
    | extend TI_ipEntity = tostring(ObservableValue),
             HoneyLabsConfidence = Confidence,
             HoneyLabsLabels = tostring(Data.labels),
             IndicatorDescription = tostring(Data.description),
             HoneyLabsReport = strcat('https://honeylabs.net/lookup/', tostring(ObservableValue));
  HoneyLabs_IPs
  | join kind=innerunique (
      CommonSecurityLog
      | where TimeGenerated >= ago(dt_lookBack)
      | where isnotempty(SourceIP)
      | extend CS_ipEntity = SourceIP
      | extend CommonSecurityLog_TimeGenerated = TimeGenerated
  ) on $left.TI_ipEntity == $right.CS_ipEntity
  | where CommonSecurityLog_TimeGenerated < ValidUntil
  | summarize CommonSecurityLog_TimeGenerated = arg_max(CommonSecurityLog_TimeGenerated, *) by Id, CS_ipEntity
  | project CommonSecurityLog_TimeGenerated, IndicatorDescription, Id, ValidUntil,
    HoneyLabsConfidence, HoneyLabsLabels, HoneyLabsReport, TI_ipEntity, CS_ipEntity, LogSeverity,
    DeviceAction, SourceIP, DestinationIP, DeviceName, SourceUserName
  | extend timestamp = CommonSecurityLog_TimeGenerated
version: 1.0.0
requiredDataConnectors:
- connectorId: ThreatIntelligenceTaxii
  dataTypes:
  - ThreatIntelligenceIndicator
- connectorId: CEF
  dataTypes:
  - CommonSecurityLog
severity: Medium
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/HoneyLabs/Analytic%20Rules/HoneyLabsTIMapIPEntityCommonSecurityLog.yaml
relevantTechniques:
- T1190
- T1071
tactics:
- InitialAccess
- CommandAndControl
entityMappings:
- fieldMappings:
  - identifier: Address
    columnName: CS_ipEntity
  entityType: IP

{
  "$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/c7061f05-d0ed-40e1-862e-bc52e454e3a1')]",
      "kind": "Scheduled",
      "name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/c7061f05-d0ed-40e1-862e-bc52e454e3a1')]",
      "properties": {
        "alertRuleTemplateName": "c7061f05-d0ed-40e1-862e-bc52e454e3a1",
        "customDetails": null,
        "description": "'Identifies source-IP matches in CommonSecurityLog (firewall, proxy and other CEF sources) against IP indicators from HoneyLabs honeypot telemetry. A match means a source IP that ran exploit or loader commands against HoneyLabs sensors also appeared as a source in your own logs. Only the structured SourceIP field is matched; destination IPs and IPs merely mentioned inside the free-text Message are ignored, because those are frequently unrelated and generate false positives. Indicator Confidence reflects how much evidence HoneyLabs holds (90 = 100+ observed attacks, 60 = a single sighting); raise the threshold in the query to trade coverage for precision.'\n",
        "displayName": "HoneyLabs TI Map IP Entity to CommonSecurityLog",
        "enabled": true,
        "entityMappings": [
          {
            "entityType": "IP",
            "fieldMappings": [
              {
                "columnName": "CS_ipEntity",
                "identifier": "Address"
              }
            ]
          }
        ],
        "OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/HoneyLabs/Analytic%20Rules/HoneyLabsTIMapIPEntityCommonSecurityLog.yaml",
        "query": "let dt_lookBack = 1h;\nlet ioc_lookBack = 14d;\nlet HoneyLabs_IPs = ThreatIntelIndicators\n  | where TimeGenerated >= ago(ioc_lookBack)\n  | where IsActive == true and ValidUntil > now()\n  | summarize LatestIndicatorTime = arg_max(TimeGenerated, *) by Id\n  | where SourceSystem startswith 'HoneyLabs'\n  | where ObservableKey == 'ipv4-addr:value'\n  | extend TI_ipEntity = tostring(ObservableValue),\n           HoneyLabsConfidence = Confidence,\n           HoneyLabsLabels = tostring(Data.labels),\n           IndicatorDescription = tostring(Data.description),\n           HoneyLabsReport = strcat('https://honeylabs.net/lookup/', tostring(ObservableValue));\nHoneyLabs_IPs\n| join kind=innerunique (\n    CommonSecurityLog\n    | where TimeGenerated >= ago(dt_lookBack)\n    | where isnotempty(SourceIP)\n    | extend CS_ipEntity = SourceIP\n    | extend CommonSecurityLog_TimeGenerated = TimeGenerated\n) on $left.TI_ipEntity == $right.CS_ipEntity\n| where CommonSecurityLog_TimeGenerated < ValidUntil\n| summarize CommonSecurityLog_TimeGenerated = arg_max(CommonSecurityLog_TimeGenerated, *) by Id, CS_ipEntity\n| project CommonSecurityLog_TimeGenerated, IndicatorDescription, Id, ValidUntil,\n  HoneyLabsConfidence, HoneyLabsLabels, HoneyLabsReport, TI_ipEntity, CS_ipEntity, LogSeverity,\n  DeviceAction, SourceIP, DestinationIP, DeviceName, SourceUserName\n| extend timestamp = CommonSecurityLog_TimeGenerated\n",
        "queryFrequency": "PT1H",
        "queryPeriod": "P14D",
        "severity": "Medium",
        "subTechniques": [],
        "suppressionDuration": "PT1H",
        "suppressionEnabled": false,
        "tactics": [
          "CommandAndControl",
          "InitialAccess"
        ],
        "techniques": [
          "T1071",
          "T1190"
        ],
        "templateVersion": "1.0.0",
        "triggerOperator": "GreaterThan",
        "triggerThreshold": 0
      },
      "type": "Microsoft.OperationalInsights/workspaces/providers/alertRules"
    }
  ]
}