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    Suspicious Rejected SMB Guest Logon From IP

    avatar
    GlassDiceBearhttps://www.dicebear.comhttps://creativecommons.org/publicdomain/zero/1.0/„Glass” (https://www.dicebear.com) by „DiceBear”, licensed under „CC0 1.0” (https://creativecommons.org/publicdomain/zero/1.0/)
    SigmaHQ Detections@sigmaHQ
    •updated Nov 24, 2025•0•0•0

    Detect Attempt PrintNightmare (CVE-2021-1675) Remote code execution in Windows Spooler Service

    Sigma

    Tags

    TA0006 - Credential AccessT1110.001 - Password GuessingAuthentication FailureWindowsWindows Smb ClientCVE-2021-1675attack.credential-accessattack.t1110.001

    Found in

    • INC and The Gentlemen Ransomware AI-Driven InfrastructureLast updated 8 days ago
    • Device-code OAuth Phishing Exploiting Microsoft Identity FlowsLast updated Sep 3, 2026

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