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    AP-C-60 VDHX Attachment In Email

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    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/)
    Tim Peck@timpeck
    •updated Oct 27, 2025•1•0•74

    Detects inbound emails with a Virtual Hard Disk (VHDX) file attachment. This technique has been used by APT-C-60 to deliver the SpyGlace backdoor, often disguised as a job application.

    YARA-L

    Tags

    G0099 - APT-C-36T1566.001 - Spearphishing AttachmentTA0001 - Initial AccessT1553.005 - Mark-of-the-Web BypassTA0005 - Defense EvasionEmail Malware DetectedEmail Attachment DownloadedEmail Phishing DetectedNetwork GenericM365 Unified Audit LogGoogle Workspace Admin LogsAPT-C-60SPYGLACEVHDXEMAILPHISHINGWINDOWS

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