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

status: Available
OriginalUri: https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Microsoft%20Copilot/Analytic%20Rules/CopilotFileUploadsDisabled.yaml
severity: High
queryPeriod: 1h
version: 1.0.0
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
name: Copilot - File Uploads Disabled
relevantTechniques:
- T1562.001
tactics:
- DefenseEvasion
id: c3d4e5f6-a7b8-49c0-d1e2-f3a4b5c6d7e8
requiredDataConnectors:
- dataTypes:
  - CopilotActivity
  connectorId: MicrosoftCopilot
entityMappings:
- fieldMappings:
  - identifier: FullName
    columnName: ActorName
  entityType: Account
- fieldMappings:
  - identifier: Address
    columnName: SrcIpAddr
  entityType: IP
triggerOperator: gt
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.'
triggerThreshold: 0
kind: Scheduled
queryFrequency: 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"
    }
  ]
}