Analytics Alerts

Browse the Cortex analytics alert reference.

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1 alert match the current filters. tactic: TA0011 ✕

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  • Unusual SSH activity that resembles SSH proxy Informational 3 variations

    A host initiated and received an unusual SSH connection, which is consistent with being an SSH proxy. This behavior may indicate an attempt to establish covert command and control communication or to exfiltrate data.

    Activation:
    14 Days
    Training:
    30 Days
    Test:
    N/A (single event)
    Deduplication:
    1 Day
    ATT&CK tactics: Command and Control (TA0011)
    ATT&CK techniques: Proxy: Internal Proxy (T1090.001)
    Required data: Palo Alto Networks Firewall traffic Logs XDR Agent
    Attacker's goals: Attackers aim to establish a covert command and control channel or relay communications through a compromised SSH connection.
    Investigative actions: Review the SSH connections to identify any unusual proxy activity or traffic patterns. Investigate the user accounts involved in the SSH connections to determine if credentials were compromised. Additionally, examine logs for any unexpected data transfers or commands that may indicate malicious intent.

    Variations

    High Volume Unusual SSH activity that resembles SSH proxy

    Low overridden

    A host initiated and received an unusual SSH connection, which is consistent with being an SSH proxy. This behavior may indicate an attempt to establish covert command and control communication or to exfiltrate data. overridden

    Suspicious SSH activity that resembles SSH proxy

    Low overridden

    A host initiated and received an unusual SSH connection, which is consistent with being an SSH proxy. This behavior may indicate an attempt to establish covert command and control communication or to exfiltrate data. overridden

    Unusual SSH activity that resembles SSH proxy detected

    Low overridden

    A host initiated and received an unusual SSH connection, which is consistent with being an SSH proxy. This behavior may indicate an attempt to establish covert command and control communication or to exfiltrate data. overridden