IP Rotation Pattern in SSO Spray

Cortex XDR Analytics Alert Reference by Alert name
Product
Cortex XDR
Last date published
2026-01-14
Category
Analytics Alert Reference
Index by
Alert name

Synopsis

Activation Period

14 Days

Training Period

30 Days

Test Period

1 Hour

Deduplication Period

1 Day

Required Data

  • Requires one of the following data sources:
    • AzureAD
      OR
    • Azure SignIn Log
      OR
    • Duo
      OR
    • Okta
      OR
    • OneLogin
      OR
    • PingOne

Detection Modules

Identity Analytics

Detector Tags

ATT&CK Tactic

ATT&CK Technique

Severity

Informational

Description

A high volume of SSO authentication attempts was observed in a short time window.
This behavior may indicate a password spray attack targeting multiple accounts.

Attacker's Goals

An attacker may be attempting to compromise user accounts through unauthorized access attempts.

Investigative actions

  • Determine if the activity was performed by a legitimate user.
  • Check for any successful logins that occurred following a series of failed attempts.
  • Investigate the AS organization and evaluate the ASN's reputation for malicious activity.
  • Review historical login behavior from the same IP addresses or ASN.
  • Validate whether MFA was triggered or bypassed during the authentication attempts.

Variations

Potential Targeted SSO Password Spray Activity Detected

Synopsis

ATT&CK Tactic

ATT&CK Technique

Severity

Medium

Description

A high volume of SSO authentication attempts was observed in a short time window.
This behavior may indicate a password spray attack targeting multiple accounts.

Attacker's Goals

An attacker may be attempting to compromise user accounts through unauthorized access attempts.

Investigative actions

  • Determine if the activity was performed by a legitimate user.
  • Check for any successful logins that occurred following a series of failed attempts.
  • Investigate the AS organization and evaluate the ASN's reputation for malicious activity.
  • Review historical login behavior from the same IP addresses or ASN.
  • Validate whether MFA was triggered or bypassed during the authentication attempts.


Suspicious SSO Login Attempts from Multiple IPs

Synopsis

ATT&CK Tactic

ATT&CK Technique

Severity

Low

Description

A high volume of SSO authentication attempts was observed in a short time window.
This behavior may indicate a password spray attack targeting multiple accounts.

Attacker's Goals

An attacker may be attempting to compromise user accounts through unauthorized access attempts.

Investigative actions

  • Determine if the activity was performed by a legitimate user.
  • Check for any successful logins that occurred following a series of failed attempts.
  • Investigate the AS organization and evaluate the ASN's reputation for malicious activity.
  • Review historical login behavior from the same IP addresses or ASN.
  • Validate whether MFA was triggered or bypassed during the authentication attempts.