Classification:

attack

VIEW RULE IN DATADOG VIEW SIGNALS

Set up the slack integration.

Goal

Detect when a Slack audit anomaly event is raised.

Strategy

This rule monitors Slack audit logs for when a Slack anomaly event is raised. Anomaly events are a special part of the Audit Logs API that help surface unexpected user behaviors. There will be a reason code published for any anomalous event. Anomalous events can include:

• Excessive number of file downloads.
• A Tor exit node was used.
• Anomalous behaviour from an administrator account.

Triage and response

1. Determine if the behaviour is expected by:
   • Contacting the user for more information.
   • Check for other signals and logs generated by the impacted user {{@usr.email}}, and look for deviations in the geolocation, ASN, or device properties.
2. If the activity is deemed malicious:
   • Begin your organization’s incident response process and investigate.