Analytics Alerts

Browse the Cortex analytics alert reference.

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1 alert match the current filters. tactic: TA0002 ✕ technique: T1204 ✕

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  • Email attachment with Right-to-Left Override Unicode character Low Email

    The email message contains an attachment with a hidden Right-to-Left Override Unicode character.

    Activation:
    14 Days
    Training:
    30 Days
    Test:
    N/A (single event)
    Deduplication:
    1 Hour 30 Minutes
    ATT&CK tactics: Stealth (TA0005) Execution (TA0002)
    ATT&CK techniques: Masquerading: Masquerade File Type (T1036.008) User Execution (T1204)
    Required data: Microsoft 365 Emails
    Detector tags: Evasion
    Attacker's goals: Bypass security filters and deliver malicious content to users Mislead recipients into opening a malicious file by obscuring its true nature Deploy malicious attachments through emails to compromise systems, gain unauthorized access, or facilitate cyber threats.
    Investigative actions: Carefully analyze attachments for any indications of suspicious or malicious behavior. Scrutinize the attachments for any suspicious indications. Confirm whether the attachments were successfully delivered to the recipient's mailbox. If the attachments were delivered successfully, verify whether the recipient downloaded them.