Analytics Alerts

Browse the Cortex analytics alert reference.

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3 alerts match the current filters. tactic: TA0010 ✕ technique: T1102 ✕

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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

  • Abnormal network communication with a rare combination of HTTP User Agent and HTTP Server Informational 1 variation

    Abnormal network communication with a rare combination of HTTP User Agent and HTTP Server 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 combination of HTTP User Agent with the external HTTP Server. Examine the parent process of this application. Check for anomalies at the time when the communication occurred.

    Variations

    Abnormal network communication with a rare combination of HTTP User Agent and HTTP Server where both the User Agent and the HTTP Server are rare

    Low overridden

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

  • HTTP with suspicious characteristics Low 3 variations

    Uncommon HTTP communication was performed by the host that might indicate its attempt to hide malicious activities.

    Activation:
    14 Days
    Training:
    30 Days
    Test:
    2 Hours
    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 uncommon connection. Examine the parent process of this application. Check for anomalies at the time when the communication occurred.

    Variations

    HTTP with suspicious characteristics which is repetitive

    Low overridden

    Repetitevne HTTP communication was performed by the host that might indicate its attempt to hide malicious activities. overridden

    HTTP with suspicious characteristics to an IP address

    Low overridden

    Uncommon HTTP communication to IP address was performed by the host that might indicate its attempt to hide malicious activities. overridden

    HTTP with suspicious characteristics that always fails

    Informational overridden

    Unsuccessful HTTP communication to IP address was performed by the host that might indicate its attempt to hide malicious activities. overridden