Medium Severity

Attachment: Encrypted ZIP containing VHDX file

Description

Detects ZIP attachments that are encrypted and contain VHDX files, which may be used to bypass security controls or deliver malicious payloads.

References

No references.

Sublime Security
Created Apr 3rd, 2026 • Last updated Apr 3rd, 2026
Source
type.inbound
and any(filter(attachments, .file_type == "zip"),
        any(file.explode(.),
            .scan.zip.encrypted == true
            and any(.scan.zip.all_paths, strings.ends_with(., "vhdx"))
        )
)
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