SSO Brute Force

Synopsis

Field	Value
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 Idira OR Duo OR Okta OR OneLogin OR PingOne
Detection Modules	Identity Analytics
ATT&CK Tactic	Credential Access (TA0006), Resource Development (TA0042)
ATT&CK Technique	Brute Force (T1110), Brute Force: Password Guessing (T1110.001), Compromise Accounts (T1586)
Severity	Informational

Description

An abnormally high amount of SSO authentication attempts were seen within a short period of time. This may have resulted from a brute-force attack.

Attacker's Goals

An attacker is attempting to gain access to an account secured with MFA.

Investigative actions

• Check the legitimacy of this activity and determine whether it is malicious or not.
• Check if the user usually logs in from this country.
• Check whether a successful login was made after unsuccessful attempts.

Variations

SSO Brute Force on a Honey User Account

Synopsis

Field	Value
ATT&CK Tactic	Credential Access (TA0006), Resource Development (TA0042)
ATT&CK Technique	Brute Force (T1110), Brute Force: Password Guessing (T1110.001), Compromise Accounts (T1586)
Severity	Medium

Description

An abnormally high amount of SSO authentication attempts were seen within a short period of time. This may have resulted from a brute-force attack.

Attacker's Goals

An attacker is attempting to gain access to an account secured with MFA.

Investigative actions

• Check the legitimacy of this activity and determine whether it is malicious or not.
• Check if the user usually logs in from this country.
• Check whether a successful login was made after unsuccessful attempts.

Successful SSO Brute Force Threat Detected

Synopsis

Field	Value
ATT&CK Tactic	Credential Access (TA0006), Resource Development (TA0042)
ATT&CK Technique	Brute Force (T1110), Brute Force: Password Guessing (T1110.001), Compromise Accounts (T1586)
Severity	Medium

Description

An abnormally high amount of SSO authentication attempts were seen within a short period of time. This may have resulted from a brute-force attack.

Attacker's Goals

An attacker is attempting to gain access to an account secured with MFA.

Investigative actions

• Check the legitimacy of this activity and determine whether it is malicious or not.
• Check if the user usually logs in from this country.
• Check whether a successful login was made after unsuccessful attempts.

SSO Brute Force Activity Observed

Synopsis

Field	Value
ATT&CK Tactic	Credential Access (TA0006), Resource Development (TA0042)
ATT&CK Technique	Brute Force (T1110), Brute Force: Password Guessing (T1110.001), Compromise Accounts (T1586)
Severity	Low

Description

An abnormally high amount of SSO authentication attempts were seen within a short period of time. This may have resulted from a brute-force attack.

Attacker's Goals

An attacker is attempting to gain access to an account secured with MFA.

Investigative actions

• Check the legitimacy of this activity and determine whether it is malicious or not.
• Check if the user usually logs in from this country.
• Check whether a successful login was made after unsuccessful attempts.