iboss - Command-and-Control Detected

ibossUrlEvent
| where CNCDetected == 1
| project EventTime, SrcUsername, Url, Domain, SrcIpAddr, DstIpAddr, DstPortNumber, DvcAction, UrlCategory, HttpUserAgent

name: iboss - Command-and-Control Detected
triggerOperator: gt
query: |
  ibossUrlEvent
  | where CNCDetected == 1
  | project EventTime, SrcUsername, Url, Domain, SrcIpAddr, DstIpAddr, DstPortNumber, DvcAction, UrlCategory, HttpUserAgent
queryFrequency: 1h
description: |
  Identifies web traffic where the iboss platform flagged command-and-control (C2) activity. A populated CNCDetected flag indicates the gateway observed communication to a known or suspected C2 destination. Surfaces the user, destination URL, and host to support triage of potentially compromised endpoints.
id: 40cf9670-d4be-4149-9082-5809a2b12ca1
triggerThreshold: 0
queryPeriod: 1h
version: 1.0.0
kind: Scheduled
status: Available
severity: High
requiredDataConnectors:
- connectorId: ibossAma
  dataTypes:
  - CommonSecurityLog
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/iboss/Analytic%20Rules/ibossCommandAndControlDetected.yaml
relevantTechniques:
- T1071
tactics:
- CommandAndControl
entityMappings:
- fieldMappings:
  - identifier: FullName
    columnName: SrcUsername
  entityType: Account
- fieldMappings:
  - identifier: Address
    columnName: SrcIpAddr
  entityType: IP
- fieldMappings:
  - identifier: Url
    columnName: Url
  entityType: URL

{
  "$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/40cf9670-d4be-4149-9082-5809a2b12ca1')]",
      "kind": "Scheduled",
      "name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/40cf9670-d4be-4149-9082-5809a2b12ca1')]",
      "properties": {
        "alertRuleTemplateName": "40cf9670-d4be-4149-9082-5809a2b12ca1",
        "customDetails": null,
        "description": "Identifies web traffic where the iboss platform flagged command-and-control (C2) activity. A populated CNCDetected flag indicates the gateway observed communication to a known or suspected C2 destination. Surfaces the user, destination URL, and host to support triage of potentially compromised endpoints.\n",
        "displayName": "iboss - Command-and-Control Detected",
        "enabled": true,
        "entityMappings": [
          {
            "entityType": "Account",
            "fieldMappings": [
              {
                "columnName": "SrcUsername",
                "identifier": "FullName"
              }
            ]
          },
          {
            "entityType": "IP",
            "fieldMappings": [
              {
                "columnName": "SrcIpAddr",
                "identifier": "Address"
              }
            ]
          },
          {
            "entityType": "URL",
            "fieldMappings": [
              {
                "columnName": "Url",
                "identifier": "Url"
              }
            ]
          }
        ],
        "OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/iboss/Analytic%20Rules/ibossCommandAndControlDetected.yaml",
        "query": "ibossUrlEvent\n| where CNCDetected == 1\n| project EventTime, SrcUsername, Url, Domain, SrcIpAddr, DstIpAddr, DstPortNumber, DvcAction, UrlCategory, HttpUserAgent\n",
        "queryFrequency": "PT1H",
        "queryPeriod": "PT1H",
        "severity": "High",
        "status": "Available",
        "subTechniques": [],
        "suppressionDuration": "PT1H",
        "suppressionEnabled": false,
        "tactics": [
          "CommandAndControl"
        ],
        "techniques": [
          "T1071"
        ],
        "templateVersion": "1.0.0",
        "triggerOperator": "GreaterThan",
        "triggerThreshold": 0
      },
      "type": "Microsoft.OperationalInsights/workspaces/providers/alertRules"
    }
  ]
}