Medium Severity

Attachment: ZIP containing Office binary with embedded DLL

Description

Detects inbound messages with a ZIP attachment that contains an office binary and an unknown DLL.

References

No references.

Sublime Security
Created Aug 24th, 2026 • Last updated Aug 24th, 2026
Source
type.inbound
and any(filter(attachments, .file_type == "zip"),
        any(file.explode(.),
            any(.scan.yara.matches, .name == "zip_office_bin_dll")
        )
)
MQL Rule Console
DocsLearning Labs

Playground

Test against your own EMLs or sample data.

Share

Post about this on your socials.

Get Started. Today.

Managed or self-managed. No MX changes.

Deploy and integrate a free Sublime instance in minutes.
Get Started