Copilot - File Uploads Disabled

CopilotActivity
| where RecordType == "DisableCopilotPlugin"
| extend Resource = parse_json(LLMEventData).Resource[0]
| extend Property = tostring(Resource.Property)
| extend Old = tostring(Resource.OriginalValue)
| extend New = tostring(Resource.NewValue)
| where Property == "FileUploads" and Old == "Enabled" and New == "Disabled"
| project TimeGenerated, ActorName, SrcIpAddr, Property, Old, New

version: 1.0.0
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Microsoft%20Copilot/Analytic%20Rules/CopilotFileUploadsDisabled.yaml
triggerThreshold: 0
requiredDataConnectors:
- dataTypes:
  - CopilotActivity
  connectorId: MicrosoftCopilot
tactics:
- DefenseEvasion
relevantTechniques:
- T1562.001
kind: Scheduled
entityMappings:
- fieldMappings:
  - identifier: FullName
    columnName: ActorName
  entityType: Account
- fieldMappings:
  - identifier: Address
    columnName: SrcIpAddr
  entityType: IP
description: |
  'Detects when file uploads are disabled in Copilot. Attackers often disable logging or file upload capabilities to avoid evidence collection and cover their tracks.
  This rule identifies potential data exfiltration cover-up scenarios where security controls are being disabled.'
triggerOperator: gt
status: Available
queryFrequency: 1h
id: c3d4e5f6-a7b8-49c0-d1e2-f3a4b5c6d7e8
name: Copilot - File Uploads Disabled
severity: High
query: |
  CopilotActivity
  | where RecordType == "DisableCopilotPlugin"
  | extend Resource = parse_json(LLMEventData).Resource[0]
  | extend Property = tostring(Resource.Property)
  | extend Old = tostring(Resource.OriginalValue)
  | extend New = tostring(Resource.NewValue)
  | where Property == "FileUploads" and Old == "Enabled" and New == "Disabled"
  | project TimeGenerated, ActorName, SrcIpAddr, Property, Old, New
queryPeriod: 1h

{
  "$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/c3d4e5f6-a7b8-49c0-d1e2-f3a4b5c6d7e8')]",
      "kind": "Scheduled",
      "name": "[concat(parameters('workspace'),'/Microsoft.SecurityInsights/c3d4e5f6-a7b8-49c0-d1e2-f3a4b5c6d7e8')]",
      "properties": {
        "alertRuleTemplateName": "c3d4e5f6-a7b8-49c0-d1e2-f3a4b5c6d7e8",
        "customDetails": null,
        "description": "'Detects when file uploads are disabled in Copilot. Attackers often disable logging or file upload capabilities to avoid evidence collection and cover their tracks.\nThis rule identifies potential data exfiltration cover-up scenarios where security controls are being disabled.'\n",
        "displayName": "Copilot - File Uploads Disabled",
        "enabled": true,
        "entityMappings": [
          {
            "entityType": "Account",
            "fieldMappings": [
              {
                "columnName": "ActorName",
                "identifier": "FullName"
              }
            ]
          },
          {
            "entityType": "IP",
            "fieldMappings": [
              {
                "columnName": "SrcIpAddr",
                "identifier": "Address"
              }
            ]
          }
        ],
        "OriginalUri": "https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Microsoft%20Copilot/Analytic%20Rules/CopilotFileUploadsDisabled.yaml",
        "query": "CopilotActivity\n| where RecordType == \"DisableCopilotPlugin\"\n| extend Resource = parse_json(LLMEventData).Resource[0]\n| extend Property = tostring(Resource.Property)\n| extend Old = tostring(Resource.OriginalValue)\n| extend New = tostring(Resource.NewValue)\n| where Property == \"FileUploads\" and Old == \"Enabled\" and New == \"Disabled\"\n| project TimeGenerated, ActorName, SrcIpAddr, Property, Old, New\n",
        "queryFrequency": "PT1H",
        "queryPeriod": "PT1H",
        "severity": "High",
        "status": "Available",
        "subTechniques": [
          "T1562.001"
        ],
        "suppressionDuration": "PT1H",
        "suppressionEnabled": false,
        "tactics": [
          "DefenseEvasion"
        ],
        "techniques": [
          "T1562"
        ],
        "templateVersion": "1.0.0",
        "triggerOperator": "GreaterThan",
        "triggerThreshold": 0
      },
      "type": "Microsoft.OperationalInsights/workspaces/providers/alertRules"
    }
  ]
}