Analytics Alerts

Browse the Cortex analytics alert reference.

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1 alert match the current filters. tactic: TA0010 ✕ technique: T1567 ✕

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  • Abnormal communication with a rare combination of TLS and HTTP User Agent Low 2 variations

    Abnormal communication with a rare combination of TLS and HTTP User Agent to an external address.

    Activation:
    14 Days
    Training:
    30 Days
    Test:
    N/A (single event)
    Deduplication:
    1 Day
    ATT&CK tactics: Command and Control (TA0011) Exfiltration (TA0010)
    ATT&CK techniques: Web Service (T1102) Exfiltration Over Web Service (T1567)
    Required data: Palo Alto Networks Firewall EAL Logs XDR Agent
    Attacker's goals: Data exfiltration, attack tool staging or command and control channel through a trusted service.
    Investigative actions: Examine the legitimacy of the application that produced this rare TLS fingerprint with the external server. Examine the parent process of this application. Check for anomalies at the time when the communication occurred. Verify if the outbound communication is being routed through a legitimate HTTP tunneling solution.

    Variations

    Abnormal communication with a rare combination of TLS and HTTP User Agent to an instant messaging server

    Low overridden

    Abnormal communication with a rare combination of TLS and HTTP User Agent to an instant messaging server. overridden

    Abnormal communication with a rare combination of TLS and HTTP User Agent to a globally rare domain

    Low overridden

    Abnormal communication with a rare combination of TLS and HTTP User Agent to a globally rare domain. overridden