Azure AI service high volume of chat requests

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azure

Classification:

attack

Tactic:

TA0007-discovery

Technique:

T1526-cloud-service-discovery

Set up the azure integration.

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Goal

Detect when there is a spike in volume of chat requests to Azure AI services.

Strategy

Monitor Azure activity logs for when a chat is completed for a specific resource within Azure AI services. This may indicate an attacker exploiting the chat function by performing model degradation, cost exploitation, malicious automation, and other techniques.

Triage and response

  1. Verify if the user or service principal is expected to be working with specific models and Azure AI services.
  2. If the activity is not expected, investigate activity around the user and IP generating this event.