Possible Brute-Force attempt

Synopsis

Field	Value
Activation Period	14 Days
Training Period	30 Days
Test Period	15 Minutes
Deduplication Period	1 Day
Required Data	XDR Agent
Detection Modules	Identity Analytics
ATT&CK Tactic	Credential Access (TA0006), Lateral Movement (TA0008)
ATT&CK Technique	Brute Force (T1110), Remote Services (T1021)
Severity	Informational

Description

A user account attempted to authenticate to a target an excessive number of times in a short period.

• This may indicate a brute-force attack.

Attacker's Goals

The attacker attempts to gain access to the accounts.

Investigative actions

Verify any successful authentication by the user account referenced by the alert, as these can indicate the attacker managed to guess the credentials.

Variations

Possible Brute-Force attempt on a Honey User Account

Synopsis

Field	Value
ATT&CK Tactic	Credential Access (TA0006), Lateral Movement (TA0008)
ATT&CK Technique	Brute Force (T1110), Remote Services (T1021)
Severity	Medium

Description

A user account attempted to authenticate to a target an excessive number of times in a short period.

• This may indicate a brute-force attack.

Attacker's Goals

The attacker attempts to gain access to the accounts.

Investigative actions

Verify any successful authentication by the user account referenced by the alert, as these can indicate the attacker managed to guess the credentials.

Possible Brute-Force attempt with a successful login and suspicious characteristics

Synopsis

Field	Value
ATT&CK Tactic	Credential Access (TA0006), Lateral Movement (TA0008)
ATT&CK Technique	Brute Force (T1110), Remote Services (T1021)
Severity	Low

Description

A user account attempted to authenticate to a target an excessive number of times in a short period.

• This may indicate a brute-force attack.

Attacker's Goals

The attacker attempts to gain access to the accounts.

Investigative actions

Verify any successful authentication by the user account referenced by the alert, as these can indicate the attacker managed to guess the credentials.