SSO Authentication With Suspicious Characteristics

This Playbook is part of the Cortex Response And Remediation Pack.

Supported versions

Supported Cortex XSOAR versions: 6.10.0 and later.

This playbook addresses the following alerts:

• SSO authentication attempt with suspicious characteristics.
• Successful SSO authentication with suspicious characteristics.

Playbook Stages:

Triage:

• Collect initial information about the user and the SSO authentication event.
• Validate whether the authentication proxy is linked to iCloud Relay.

Investigation:

• Check IOCs Reputation:
  • Analyze the reputation of IP addresses associated with the alert.
• Search Related Alerts:
  • Look for alerts related to the same user within the system to identify suspicious activity trends.
• Check If User Is Risky:
  • Retrieve the user's risk score and evaluate high-risk indicators for suspicious activities.
• Check User Agent:
  • Identify suspicious user agents used during the authentication attempts.
• Check Okta Logs:
  • Retrieve Okta authentication logs for failed login attempts and suspicious authentication activities within the last day.

Containment:

• Automatic Actions:
  • Clear user sessions if any suspicious evidence is found during the investigation.
• Analyst Review:
  • Provide an analyst with findings for review and determine the appropriate action:
    • No action required.
    • Suspend the user in Okta.
  • If the analyst chooses to suspend the user, their active sessions are cleared in Okta.

Requirements: For the best results, it's recommended to ensure these integrations are configured and working:

• Core integration for user risk evaluation and suspicious activity checks.
• Okta v2 integration for analyzing authentication logs, clearing sessions, and user suspension.
• Any IP reputation integration that supports the !ip command for checking IP address reputation.

Dependencies

This playbook uses the following sub-playbooks, integrations, and scripts.

Sub-playbooks

• Containment Plan - Clear User Sessions

Integrations

• Cortex Core - IR
• Okta v2

Scripts

• GetTime
• SearchAlertsV2
• SetAndHandleEmpty

Commands

• closeInvestigation
• core-get-cloud-original-alerts
• core-list-risky-users
• ip
• okta-get-failed-logins
• okta-get-logs
• okta-suspend-user

Playbook Inputs

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There are no inputs for this playbook.

Playbook Outputs

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There are no outputs for this playbook.

Playbook Image

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