Analytics Alerts

Browse the Cortex analytics alert reference.

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1 alert match the current filters.

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  • Possible multistage attack in Microsoft Teams Low Identity Threat Module 1 variation

    Possible multistage attack in Microsoft Teams.

    Activation:
    14 Days
    Training:
    30 Days
    Test:
    12 Hours
    Deduplication:
    1 Day
    ATT&CK tactics: Initial Access (TA0001)
    ATT&CK techniques: Phishing (T1566)
    Required data: Office 365 Audit
    Detector tags: Microsoft Teams
    Attacker's goals: Attackers may leverage Microsoft Teams to conduct phishing attacks by exploiting trusted communication channels with users inside the organization.
    Investigative actions: Verify the suspicious activity to validate the legitimacy of the user's actions. Review Teams chat logs and meeting invites for interactions with external tenants, focusing on unusual file sharing or unsolicited links. Hunt for known phishing indicators (suspicious domains, URL patterns, or IPs) in the Teams messages and linked content. Evaluate the external tenant reputation. Check for anomalous MS Teams actions like suspicious application installation, message extraction, policy changes or internal spear phishing attempts linked to the user post-login. Follow further actions done by the account.

    Variations

    Malicious activity had been detected with strong indicators

    Medium overridden

    Malicious Microsoft Teams activity detected across multiple indicators, the activities have strong indications of a malicious action. overridden