Analytics Alerts

Browse the Cortex analytics alert reference.

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1 alert match the current filters. tactic: TA0006 ✕

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  • Multiple user accounts failed login due to account lockouts Low Identity Analytics 1 variation

    A high amount of user accounts were locked out from a single source host in a short time period. This may be the result of a brute-force or password spray attack.

    Activation:
    14 Days
    Training:
    30 Days
    Test:
    1 Hour
    Deduplication:
    1 Day
    ATT&CK tactics: Credential Access (TA0006)
    ATT&CK techniques: Brute Force (T1110) Brute Force: Password Spraying (T1110.003)
    Required data: XDR Agent
    Attacker's goals: An attacker may be attempting to gain unauthorized access to user accounts.
    Investigative actions: Investigate the associated authentication attempts and login failures (e.g. 4740, 4625, 4776 events). Check if any programs were cached with old credentials, resulting in account lockouts. Find the computer responsible for the lockouts and verify if it exists on the domain. Monitor services that may be running with a user's credentials.

    Variations

    Excessive user account login failure due to lockout from a suspicious source

    Medium overridden

    A high amount of user accounts were locked out from a single source host in a short time period. This may be the result of a brute-force or password spray attack. overridden