Suspicious Azure OpenAI Training File Upload via Files Import Operation (via azure)

ATT&CK techniques

Initial Access → Exfiltration

Recon
Resource Dev
Initial Access
- T1078.004Cloud Accounts
Execution
Persistence
- T1078.004Cloud Accounts
Priv Esc
- T1078.004Cloud Accounts
Defense Evasion
- T1078.004Cloud Accounts
Cred Access
Discovery
Lateral Movement
Collection
C2
Exfiltration
- T1567Exfiltration Over Web Service
Impact

What it detects

This rule detects the Azure OpenAI Files_Import and Files_Upload operations in diagnostic logs, the behavior Red Canary linked to model poisoning and data staging where an actor uploads fine-tuning files to an OpenAI resource. Unexpected file uploads to an Azure OpenAI deployment can indicate poisoning of training data or staging for later exfiltration.

Reporting behind it

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Suspicious Azure OpenAI Training File Upload via Files Import Operation (via azure)

Pivot detection · T1078.004 · 9 related

Detection content is published as a reviewed draft. Tune thresholds and exclusions against your own telemetry before enabling this rule for alerting.

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