Analytics Alerts

Browse the Cortex analytics alert reference.

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1 alert match the current filters. technique: T1110 ✕

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  • First-time attachment exchange Informational Email

    Detects when an attachment is sent between individuals for the first time in 30 days.

    Activation:
    14 Days
    Training:
    30 Days
    Test:
    N/A (single event)
    Deduplication:
    1 Hour 30 Minutes
    ATT&CK tactics: Execution (TA0002) Credential Access (TA0006)
    ATT&CK techniques: User Execution (T1204) Brute Force: Password Cracking (T1110.002)
    Required data: Microsoft 365 Emails
    Detector tags: Phishing
    Attacker's goals: Trick the user on clicking the link or opening attachments, while avoiding detection.
    Investigative actions: Examine the sender's IP address and reputation. Verify whether the sender's IP address has appeared in different log sources before, and if it is recognizable. Scrutinize the attachments for any suspicious indications or malicious content. Check if the attachments have been seen before in the organization. Monitor further actions taken, such as file downloads or execution of attachment content.