Classification:

attack

Tactic:

TA0004-privilege-escalation

Technique:

T1078-valid-accounts

VIEW RULE IN DATADOG VIEW SIGNALS

Goal

Detect when a Tailscale user’s role is updated.

Strategy

This rule monitors Tailscale logs for when a user’s role is updated. This could be a privilege escalation vector for an attacker looking to bypass restrictions from a lower privileged user.

Triage and response

1. Investigate the user {{@usr.email}} that performed the UPDATE action on user {{@target.name}}.
2. Compare the previous roles {{@old}} with the new role updates containing the {{@new}} role and confirm that they should be assigned to the user {{@target.name}}.
3. If the activity is deemed malicious:
   • Begin your organization’s incident response process and investigate.