Analytics Alerts

Browse the Cortex analytics alert reference.

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1 alert match the current filters. tactic: TA0001 ✕ technique: T1566 ✕

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  • Numerous emails sent by a single sender to multiple internal recipients Informational Email

    Numerous emails were sent to multiple internal recipients. This may indicate spam or any other malicious attempt.

    Activation:
    14 Days
    Training:
    30 Days
    Test:
    10 Minutes
    Deduplication:
    1 Day
    ATT&CK tactics: Initial Access (TA0001)
    ATT&CK techniques: Phishing (T1566)
    Required data: Microsoft 365 Emails
    Detector tags: Phishing, Spam
    Attacker's goals: Trick the user into clicking a link, 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. If the message contains attachments or links, scrutinize them for any suspicious indications. Monitor further actions taken, such as file downloads or access to potentially malicious links.