Possible Password Spray in universal authentication

Synopsis

Field	Value
Activation Period	14 Days
Training Period	30 Days
Test Period	1 Hour
Deduplication Period	1 Day
Detection Modules	Identity Analytics
ATT&CK Tactic	Credential Access (TA0006), Resource Development (TA0042)
ATT&CK Technique	Brute Force: Password Spraying (T1110.003), Brute Force: Password Guessing (T1110.001), Compromise Accounts: Cloud Accounts (T1586.003)
Severity	Informational

Description

An abnormally high amount of universal authentication attempts were seen within a short period of time. This may indicate a password spray attack.

Attacker's Goals

An attacker may be attempting to gain unauthorized access to user accounts.

Investigative actions

• Determine whether this was part of a legitimate action.
• Check if the user usually logs in from this country.
• Check whether a successful login was made after unsuccessful attempts.

Variations

Password Spray in universal authentication involving a honey user

Synopsis

Field	Value
ATT&CK Tactic	Credential Access (TA0006), Resource Development (TA0042)
ATT&CK Technique	Brute Force: Password Spraying (T1110.003), Brute Force: Password Guessing (T1110.001), Compromise Accounts: Cloud Accounts (T1586.003)
Severity	Medium

Description

An abnormally high amount of universal authentication attempts were seen within a short period of time. This may indicate a password spray attack.

Attacker's Goals

An attacker may be attempting to gain unauthorized access to user accounts.

Investigative actions

• Determine whether this was part of a legitimate action.
• Check if the user usually logs in from this country.
• Check whether a successful login was made after unsuccessful attempts.

Suspicious Password Spray in universal authentication

Synopsis

Field	Value
ATT&CK Tactic	Credential Access (TA0006), Resource Development (TA0042)
ATT&CK Technique	Brute Force: Password Spraying (T1110.003), Brute Force: Password Guessing (T1110.001), Compromise Accounts: Cloud Accounts (T1586.003)
Severity	Medium

Description

An abnormally high amount of universal authentication attempts were seen within a short period of time. This may indicate a password spray attack.

Attacker's Goals

An attacker may be attempting to gain unauthorized access to user accounts.

Investigative actions

• Determine whether this was part of a legitimate action.
• Check if the user usually logs in from this country.
• Check whether a successful login was made after unsuccessful attempts.

Password Spray in universal authentication

Synopsis

Field	Value
ATT&CK Tactic	Credential Access (TA0006), Resource Development (TA0042)
ATT&CK Technique	Brute Force: Password Spraying (T1110.003), Brute Force: Password Guessing (T1110.001), Compromise Accounts: Cloud Accounts (T1586.003)
Severity	Low

Description

An abnormally high amount of universal authentication attempts were seen within a short period of time. This may indicate a password spray attack.

Attacker's Goals

An attacker may be attempting to gain unauthorized access to user accounts.

Investigative actions

• Determine whether this was part of a legitimate action.
• Check if the user usually logs in from this country.
• Check whether a successful login was made after unsuccessful attempts.

Possible Password Spray in universal authentication with successful authentication

Synopsis

Field	Value
ATT&CK Tactic	Credential Access (TA0006), Resource Development (TA0042)
ATT&CK Technique	Brute Force: Password Spraying (T1110.003), Brute Force: Password Guessing (T1110.001), Compromise Accounts: Cloud Accounts (T1586.003)
Severity	Informational

Description

An abnormally high amount of universal authentication attempts were seen within a short period of time. This may indicate a password spray attack.

Attacker's Goals

An attacker may be attempting to gain unauthorized access to user accounts.

Investigative actions

• Determine whether this was part of a legitimate action.
• Check if the user usually logs in from this country.
• Check whether a successful login was made after unsuccessful attempts.