Cisco Umbrella - Request Allowed to harmfulmalicious URI category

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Id	d6bf1931-b1eb-448d-90b2-de118559c7ce
Rulename	Cisco Umbrella - Request Allowed to harmful/malicious URI category
Description	It is reccomended that these Categories shoud be blocked by policies because they provide harmful/malicious content..
Severity	Medium
Tactics	CommandAndControl InitialAccess
Required data connectors	CiscoUmbrellaDataConnector
Kind	Scheduled
Query frequency	10m
Query period	10m
Trigger threshold	0
Trigger operator	gt
Source Uri	https://github.com/Azure/Azure-Sentinel/blob/master/Detections/CiscoUmbrella/CiscoUmbrellaRequestAllowedHarmfulMaliciousURICategory.yaml
Version	1.1.1
Arm template	d6bf1931-b1eb-448d-90b2-de118559c7ce.json

KQL

let lbtime = 10m;
Cisco_Umbrella
| where TimeGenerated > ago(lbtime)
| where EventType == 'proxylogs'
| where DvcAction =~ 'Allowed'
| where UrlCategory contains 'Adult Themes' or
      UrlCategory contains 'Adware' or
      UrlCategory contains 'Alcohol' or
      UrlCategory contains 'Illegal Downloads' or
      UrlCategory contains 'Drugs' or
      UrlCategory contains 'Child Abuse Content' or
      UrlCategory contains 'Hate/Discrimination' or
      UrlCategory contains 'Nudity' or
      UrlCategory contains 'Pornography' or
      UrlCategory contains 'Proxy/Anonymizer' or
      UrlCategory contains 'Sexuality' or
      UrlCategory contains 'Tasteless' or
      UrlCategory contains 'Terrorism' or
      UrlCategory contains 'Web Spam' or
      UrlCategory contains 'German Youth Protection' or
      UrlCategory contains 'Illegal Activities' or
      UrlCategory contains 'Lingerie/Bikini' or
      UrlCategory contains 'Weapons'
| project TimeGenerated, SrcIpAddr, Identities

YAML

queryFrequency: 10m
description: |
    'It is reccomended that these Categories shoud be blocked by policies because they provide harmful/malicious content..'
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Detections/CiscoUmbrella/CiscoUmbrellaRequestAllowedHarmfulMaliciousURICategory.yaml
triggerOperator: gt
queryPeriod: 10m
kind: Scheduled
entityMappings:
- entityType: Account
  fieldMappings:
  - identifier: FullName
    columnName: Identities
- entityType: IP
  fieldMappings:
  - identifier: Address
    columnName: SrcIpAddr
tactics:
- CommandAndControl
- InitialAccess
severity: Medium
name: Cisco Umbrella - Request Allowed to harmful/malicious URI category
query: |
  let lbtime = 10m;
  Cisco_Umbrella
  | where TimeGenerated > ago(lbtime)
  | where EventType == 'proxylogs'
  | where DvcAction =~ 'Allowed'
  | where UrlCategory contains 'Adult Themes' or
        UrlCategory contains 'Adware' or
        UrlCategory contains 'Alcohol' or
        UrlCategory contains 'Illegal Downloads' or
        UrlCategory contains 'Drugs' or
        UrlCategory contains 'Child Abuse Content' or
        UrlCategory contains 'Hate/Discrimination' or
        UrlCategory contains 'Nudity' or
        UrlCategory contains 'Pornography' or
        UrlCategory contains 'Proxy/Anonymizer' or
        UrlCategory contains 'Sexuality' or
        UrlCategory contains 'Tasteless' or
        UrlCategory contains 'Terrorism' or
        UrlCategory contains 'Web Spam' or
        UrlCategory contains 'German Youth Protection' or
        UrlCategory contains 'Illegal Activities' or
        UrlCategory contains 'Lingerie/Bikini' or
        UrlCategory contains 'Weapons'
  | project TimeGenerated, SrcIpAddr, Identities  
triggerThreshold: 0
version: 1.1.1
requiredDataConnectors:
- dataTypes:
  - Cisco_Umbrella_proxy_CL
  connectorId: CiscoUmbrellaDataConnector
id: d6bf1931-b1eb-448d-90b2-de118559c7ce

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/d6bf1931-b1eb-448d-90b2-de118559c7ce')]",
      "kind": "Scheduled",
      "name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/d6bf1931-b1eb-448d-90b2-de118559c7ce')]",
      "properties": {
        "alertRuleTemplateName": "d6bf1931-b1eb-448d-90b2-de118559c7ce",
        "customDetails": null,
        "description": "'It is reccomended that these Categories shoud be blocked by policies because they provide harmful/malicious content..'\n",
        "displayName": "Cisco Umbrella - Request Allowed to harmful/malicious URI category",
        "enabled": true,
        "entityMappings": [
          {
            "entityType": "Account",
            "fieldMappings": [
              {
                "columnName": "Identities",
                "identifier": "FullName"
              }
            ]
          },
          {
            "entityType": "IP",
            "fieldMappings": [
              {
                "columnName": "SrcIpAddr",
                "identifier": "Address"
              }
            ]
          }
        ],
        "OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Detections/CiscoUmbrella/CiscoUmbrellaRequestAllowedHarmfulMaliciousURICategory.yaml",
        "query": "let lbtime = 10m;\nCisco_Umbrella\n| where TimeGenerated > ago(lbtime)\n| where EventType == 'proxylogs'\n| where DvcAction =~ 'Allowed'\n| where UrlCategory contains 'Adult Themes' or\n      UrlCategory contains 'Adware' or\n      UrlCategory contains 'Alcohol' or\n      UrlCategory contains 'Illegal Downloads' or\n      UrlCategory contains 'Drugs' or\n      UrlCategory contains 'Child Abuse Content' or\n      UrlCategory contains 'Hate/Discrimination' or\n      UrlCategory contains 'Nudity' or\n      UrlCategory contains 'Pornography' or\n      UrlCategory contains 'Proxy/Anonymizer' or\n      UrlCategory contains 'Sexuality' or\n      UrlCategory contains 'Tasteless' or\n      UrlCategory contains 'Terrorism' or\n      UrlCategory contains 'Web Spam' or\n      UrlCategory contains 'German Youth Protection' or\n      UrlCategory contains 'Illegal Activities' or\n      UrlCategory contains 'Lingerie/Bikini' or\n      UrlCategory contains 'Weapons'\n| project TimeGenerated, SrcIpAddr, Identities\n",
        "queryFrequency": "PT10M",
        "queryPeriod": "PT10M",
        "severity": "Medium",
        "subTechniques": [],
        "suppressionDuration": "PT1H",
        "suppressionEnabled": false,
        "tactics": [
          "CommandAndControl",
          "InitialAccess"
        ],
        "templateVersion": "1.1.1",
        "triggerOperator": "GreaterThan",
        "triggerThreshold": 0
      },
      "type": "Microsoft.OperationalInsights/workspaces/providers/alertRules"
    }
  ]
}