Analytics Alerts

Browse the Cortex analytics alert reference.

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1 alert match the current filters. tactic: TA0006 ✕

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  • Possible new DHCP server Medium

    A DHCP response was sent from an unknown DHCP server. Attackers may send a DHCP response to a host in his LAN to inject a DNS server, route or WPAD server.

    Activation:
    14 Days
    Training:
    30 Days
    Test:
    N/A (single event)
    Deduplication:
    1 Day
    ATT&CK tactics: Credential Access (TA0006)
    ATT&CK techniques: Adversary-in-the-Middle (T1557)
    Required data: XDR Agent
    Attacker's goals: The attacker is attempting a man-in-the-middle NTLM relay attack to intercept authentication attempts and move laterally within an environment.
    Investigative actions: Check if the source agent is a legitimate DHCP server. Check if the attacked host send DNS queries to an unusual IP. Check if the attacked host send WPAD HTTP/S requests to an unusual host.