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Credential Stuffing Attack on Azure

azure

Classification:

attack

Tactic:

TA0006-credential-access

Technique:

T1110-brute-force

Set up the azure integration.

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Goal

Detect and identify the network IP address when multiple user accounts have login attempt activities recorded.

Strategy

Monitor Azure Active Directory and detect when any @evt.category is equal to SignInLogs and more than 1 of the @evt.outcome are equal to false and was initiated by the same network IP address.

Security Signal returns HIGH if`@evt.outcomehas value ofsuccess` after multiple failed logins were initiated by the same network IP address.

Triage and response

  1. Inspect the log and determine if this was a valid login attempt.
  2. If the user was compromised, rotate user credentials.