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    Outlook .msg open followed by OUTLOOK.EXE outbound SMB/WebDAV to public 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/)
    Akhil Sable@kayshika
    •updated today•4•0•17

    Detects potential NTLM credential leaks where Outlook processes (.msg file handling or execution) are followed closely by outbound network connections on ports 445 (SMB) or 80 (HTTP/WebDAV) to external IP addresses.

    Splunk (SPL)

    Tags

    T1187 - Forced AuthenticationT1566.001 - Spearphishing AttachmentTA0006 - Credential AccessTA0001 - Initial AccessFile EventNetwork Connection OutboundCredential AccessWindowsWindows SysmonCVE-2026-124194spl

    Found in

    • Microsoft Outlook Zero-Day Spoofing Vulnerability (CVE-2026-124194)Last updated yesterday
    • Cybersecurity Threat Roundup: AI Infrastructure and EspionageLast updated 2 days ago

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