GitLab user changes associated email

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gitlab

Classification:

attack

Tactic:

TA0003-persistence

Technique:

T1098-account-manipulation

Set up the gitlab integration.

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Goal

Detects when a GitLab user changes their associated email address and then signs in using the new email.

Strategy

This rule monitors the user_email_changed_and_user_signed_in GitLab audit event. Email address changes can be used by attackers to maintain persistence after compromising an account.

Triage and response

  • Verify if {{@usr.name}} has a legitimate business reason to change their email address in GitLab.
  • Review authentication logs around the time of the email change to identify any unusual access patterns or geographic anomalies.
  • Examine recent GitLab activity for the user account to determine if any unauthorized actions were performed after the email change.
  • Validate that the new email address belongs to the organization’s domain or is otherwise authorized for use.