Copilot - File Uploads Disabled

Back


Id	c3d4e5f6-a7b8-49c0-d1e2-f3a4b5c6d7e8
Rulename	Copilot - File Uploads Disabled
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.
Severity	High
Tactics	DefenseEvasion
Techniques	T1562.001
Required data connectors	MicrosoftCopilot
Kind	Scheduled
Query frequency	1h
Query period	1h
Trigger threshold	0
Trigger operator	gt
Source Uri	https://github.com/Azure/Azure-Sentinel/blob/master/Solutions/Microsoft Copilot/Analytic Rules/CopilotFileUploadsDisabled.yaml
Version	1.0.0
Arm template	c3d4e5f6-a7b8-49c0-d1e2-f3a4b5c6d7e8.json

KQL

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

YAML

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

ARM