Analytics Alerts

Browse the Cortex analytics alert reference.

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1 alert match the current filters. technique: T1041 ✕

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  • Uncommon recurring rare external host access Informational 6 variations

    A process has established recurring connections to an uncommon external host.

    Activation:
    14 Days
    Training:
    30 Days
    Test:
    N/A (single event)
    Deduplication:
    14 Days
    ATT&CK tactics: Command and Control (TA0011) Exfiltration (TA0010)
    ATT&CK techniques: Application Layer Protocol (T1071) Exfiltration Over C2 Channel (T1041) Remote Access Tools (T1219)
    Required data: XDR Agent
    Detector tags: Abnormal Communication Analytics
    Attacker's goals: Communicate with malware running on your network to control malware activities, perform software updates on the malware, or to take inventory of infected machines. Additionally, establish command and control channels for remote malware control, conduct discovery activities to gather information about the target environment, or exfiltrate sensitive data from compromised systems.
    Investigative actions: Identify the process contacting the remote host and determine whether the traffic is malicious. Look for other endpoints on your network that are also periodically contacting the same external host. Inspect the domain or URL for malicious indicators or its presence in threat intelligence feeds and reputation lists.

    Variations

    Uncommon recurring rare external host access by an automated penetration testing tool

    High overridden

    A process has established recurring connections to an uncommon external host. overridden

    Uncommon recurring rare external host access to a dynamic DNS domain

    Low overridden

    A process has established recurring connections to an uncommon external host. overridden

    Uncommon recurring rare external host access initiated by a cron job

    Low overridden

    A process has established recurring connections to an uncommon external host. overridden

    Uncommon recurring rare external host access with a rare top-level domain

    Low overridden

    A process has established recurring connections to an uncommon external host. overridden

    Uncommon recurring rare external host access using an exfiltration tool

    Low overridden

    A process has established recurring connections to an uncommon external host. overridden

    Uncommon recurring rare external host access with a sensitive file in actor or causality command line

    Low overridden

    A process has established recurring connections to an uncommon external host. overridden