Microsoft Sentinel Analytic Rules
cloudbrothers.infoAzure Sentinel RepoToggle Dark/Light/Auto modeToggle Dark/Light/Auto modeToggle Dark/Light/Auto modeBack to homepage

TI Map URL Entity to AuditLogs

Back
Id6ddbd892-a9be-47be-bab7-521241695bd6
RulenameTI Map URL Entity to AuditLogs
DescriptionThis query identifies any URL indicators of compromise (IOCs) from threat intelligence (TI) by searching for matches in DeviceNetworkEvents.
SeverityMedium
TacticsImpact
Required data connectorsMicrosoftDefenderThreatIntelligence
MicrosoftThreatProtection
ThreatIntelligence
ThreatIntelligenceTaxii
KindScheduled
Query frequency1h
Query period14d
Trigger threshold0
Trigger operatorgt
Source Urihttps://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Threat Intelligence/Analytic Rules/URLEntity_DeviceNetworkEvents.yaml
Version1.0.0
Arm template6ddbd892-a9be-47be-bab7-521241695bd6.json
Deploy To Azure
let dt_lookBack = 1h;
let ioc_lookBack = 14d;
let DeviceNetworkEvents_ = DeviceNetworkEvents
  | where isnotempty(RemoteUrl)
  | where TimeGenerated >= ago(dt_lookBack)
  | where ActionType !has "ConnectionFailed"
  | extend RemoteUrl = tolower(RemoteUrl)
  | project-rename DeviceNetworkEvents_TimeGenerated = TimeGenerated;
let DeviceNetworkEventUrls = DeviceNetworkEvents_
  | distinct Url = RemoteUrl
  | summarize make_list(Url);
ThreatIntelligenceIndicator
| where isnotempty(Url)
| where TimeGenerated >= ago(ioc_lookBack)
| extend Url = tolower(Url)
| where Url in (DeviceNetworkEventUrls)
| summarize LatestIndicatorTime = arg_max(TimeGenerated, *) by IndicatorId
| where Active == true and ExpirationDateTime > now()
| where Description !contains_cs "State: inactive;" and Description !contains_cs "State: falsepos;"
| join kind=innerunique (DeviceNetworkEvents_) on $left.Url == $right.RemoteUrl
| where DeviceNetworkEvents_TimeGenerated < ExpirationDateTime
| summarize DeviceNetworkEvents_TimeGenerated = arg_max(DeviceNetworkEvents_TimeGenerated, *) by IndicatorId, Url
| project DeviceNetworkEvents_TimeGenerated, IndicatorId, Url, ConfidenceScore, Description, ThreatType, Tags, TrafficLightProtocolLevel, ActionType, DeviceId, DeviceName, InitiatingProcessAccountUpn, InitiatingProcessCommandLine, RemoteIP, RemotePort
| extend Name = tostring(split(InitiatingProcessAccountUpn, '@', 0)[0]), UPNSuffix = tostring(split(InitiatingProcessAccountUpn, '@', 1)[0])
| extend timestamp = DeviceNetworkEvents_TimeGenerated, UserPrincipalName = InitiatingProcessAccountUpn
severity: Medium
queryFrequency: 1h
kind: Scheduled
version: 1.0.0
triggerOperator: gt
description: |
    'This query identifies any URL indicators of compromise (IOCs) from threat intelligence (TI) by searching for matches in DeviceNetworkEvents.'
queryPeriod: 14d
id: 6ddbd892-a9be-47be-bab7-521241695bd6
entityMappings:
- entityType: Account
  fieldMappings:
  - columnName: Name
    identifier: Name
  - columnName: UPNSuffix
    identifier: UPNSuffix
- entityType: Host
  fieldMappings:
  - columnName: DeviceName
    identifier: FullName
- entityType: URL
  fieldMappings:
  - columnName: Url
    identifier: Url
- entityType: Process
  fieldMappings:
  - columnName: InitiatingProcessCommandLine
    identifier: CommandLine
tactics:
- Impact
name: TI Map URL Entity to AuditLogs
triggerThreshold: 0
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Threat Intelligence/Analytic Rules/URLEntity_DeviceNetworkEvents.yaml
query: |
  let dt_lookBack = 1h;
  let ioc_lookBack = 14d;
  let DeviceNetworkEvents_ = DeviceNetworkEvents
    | where isnotempty(RemoteUrl)
    | where TimeGenerated >= ago(dt_lookBack)
    | where ActionType !has "ConnectionFailed"
    | extend RemoteUrl = tolower(RemoteUrl)
    | project-rename DeviceNetworkEvents_TimeGenerated = TimeGenerated;
  let DeviceNetworkEventUrls = DeviceNetworkEvents_
    | distinct Url = RemoteUrl
    | summarize make_list(Url);
  ThreatIntelligenceIndicator
  | where isnotempty(Url)
  | where TimeGenerated >= ago(ioc_lookBack)
  | extend Url = tolower(Url)
  | where Url in (DeviceNetworkEventUrls)
  | summarize LatestIndicatorTime = arg_max(TimeGenerated, *) by IndicatorId
  | where Active == true and ExpirationDateTime > now()
  | where Description !contains_cs "State: inactive;" and Description !contains_cs "State: falsepos;"
  | join kind=innerunique (DeviceNetworkEvents_) on $left.Url == $right.RemoteUrl
  | where DeviceNetworkEvents_TimeGenerated < ExpirationDateTime
  | summarize DeviceNetworkEvents_TimeGenerated = arg_max(DeviceNetworkEvents_TimeGenerated, *) by IndicatorId, Url
  | project DeviceNetworkEvents_TimeGenerated, IndicatorId, Url, ConfidenceScore, Description, ThreatType, Tags, TrafficLightProtocolLevel, ActionType, DeviceId, DeviceName, InitiatingProcessAccountUpn, InitiatingProcessCommandLine, RemoteIP, RemotePort
  | extend Name = tostring(split(InitiatingProcessAccountUpn, '@', 0)[0]), UPNSuffix = tostring(split(InitiatingProcessAccountUpn, '@', 1)[0])
  | extend timestamp = DeviceNetworkEvents_TimeGenerated, UserPrincipalName = InitiatingProcessAccountUpn  
requiredDataConnectors:
- dataTypes:
  - DeviceNetworkEvents
  connectorId: MicrosoftThreatProtection
- dataTypes:
  - ThreatIntelligenceIndicator
  connectorId: ThreatIntelligence
- dataTypes:
  - ThreatIntelligenceIndicator
  connectorId: ThreatIntelligenceTaxii
- dataTypes:
  - ThreatIntelligenceIndicator
  connectorId: MicrosoftDefenderThreatIntelligence
{
  "$schema": "https://schema.management.azure.com/schemas/2019-04-01/deploymentTemplate.json#",
  "contentVersion": "1.0.0.0",
  "parameters": {
    "workspace": {
      "type": "String"
    }
  },
  "resources": [
    {
      "apiVersion": "2023-02-01-preview",
      "id": "[concat(resourceId('Microsoft.OperationalInsights/workspaces/providers', parameters('workspace'), 'Microsoft.SecurityInsights'),'/alertRules/6ddbd892-a9be-47be-bab7-521241695bd6')]",
      "kind": "Scheduled",
      "name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/6ddbd892-a9be-47be-bab7-521241695bd6')]",
      "properties": {
        "alertRuleTemplateName": "6ddbd892-a9be-47be-bab7-521241695bd6",
        "customDetails": null,
        "description": "'This query identifies any URL indicators of compromise (IOCs) from threat intelligence (TI) by searching for matches in DeviceNetworkEvents.'\n",
        "displayName": "TI Map URL Entity to AuditLogs",
        "enabled": true,
        "entityMappings": [
          {
            "entityType": "Account",
            "fieldMappings": [
              {
                "columnName": "Name",
                "identifier": "Name"
              },
              {
                "columnName": "UPNSuffix",
                "identifier": "UPNSuffix"
              }
            ]
          },
          {
            "entityType": "Host",
            "fieldMappings": [
              {
                "columnName": "DeviceName",
                "identifier": "FullName"
              }
            ]
          },
          {
            "entityType": "URL",
            "fieldMappings": [
              {
                "columnName": "Url",
                "identifier": "Url"
              }
            ]
          },
          {
            "entityType": "Process",
            "fieldMappings": [
              {
                "columnName": "InitiatingProcessCommandLine",
                "identifier": "CommandLine"
              }
            ]
          }
        ],
        "OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Threat Intelligence/Analytic Rules/URLEntity_DeviceNetworkEvents.yaml",
        "query": "let dt_lookBack = 1h;\nlet ioc_lookBack = 14d;\nlet DeviceNetworkEvents_ = DeviceNetworkEvents\n  | where isnotempty(RemoteUrl)\n  | where TimeGenerated >= ago(dt_lookBack)\n  | where ActionType !has \"ConnectionFailed\"\n  | extend RemoteUrl = tolower(RemoteUrl)\n  | project-rename DeviceNetworkEvents_TimeGenerated = TimeGenerated;\nlet DeviceNetworkEventUrls = DeviceNetworkEvents_\n  | distinct Url = RemoteUrl\n  | summarize make_list(Url);\nThreatIntelligenceIndicator\n| where isnotempty(Url)\n| where TimeGenerated >= ago(ioc_lookBack)\n| extend Url = tolower(Url)\n| where Url in (DeviceNetworkEventUrls)\n| summarize LatestIndicatorTime = arg_max(TimeGenerated, *) by IndicatorId\n| where Active == true and ExpirationDateTime > now()\n| where Description !contains_cs \"State: inactive;\" and Description !contains_cs \"State: falsepos;\"\n| join kind=innerunique (DeviceNetworkEvents_) on $left.Url == $right.RemoteUrl\n| where DeviceNetworkEvents_TimeGenerated < ExpirationDateTime\n| summarize DeviceNetworkEvents_TimeGenerated = arg_max(DeviceNetworkEvents_TimeGenerated, *) by IndicatorId, Url\n| project DeviceNetworkEvents_TimeGenerated, IndicatorId, Url, ConfidenceScore, Description, ThreatType, Tags, TrafficLightProtocolLevel, ActionType, DeviceId, DeviceName, InitiatingProcessAccountUpn, InitiatingProcessCommandLine, RemoteIP, RemotePort\n| extend Name = tostring(split(InitiatingProcessAccountUpn, '@', 0)[0]), UPNSuffix = tostring(split(InitiatingProcessAccountUpn, '@', 1)[0])\n| extend timestamp = DeviceNetworkEvents_TimeGenerated, UserPrincipalName = InitiatingProcessAccountUpn\n",
        "queryFrequency": "PT1H",
        "queryPeriod": "P14D",
        "severity": "Medium",
        "suppressionDuration": "PT1H",
        "suppressionEnabled": false,
        "tactics": [
          "Impact"
        ],
        "templateVersion": "1.0.0",
        "triggerOperator": "GreaterThan",
        "triggerThreshold": 0
      },
      "type": "Microsoft.OperationalInsights/workspaces/providers/alertRules"
    }
  ]
}