Sublime Security high experimental mql

Attachment with VBA macros from employee impersonation (unsolicited)

Attachment contains a VBA macro from a sender your organization has never sent an email to. Sender is using a display name that matches the display name of someone in your organization. VBA macros are a common phishing technique used to deploy malware.

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Detection Logic

type.inbound

// ensure the display name contains a space to avoid single named process accounts eg. 'billing, payment'
and strings.contains(sender.display_name, " ")
and sender.display_name in~ $org_display_names
and any(attachments,
        (
          .file_extension in~ $file_extensions_macros
          or .file_extension in~ $file_extensions_common_archives
          or (
            .file_extension is null
            and .file_type == "unknown"
            and .content_type == "application/octet-stream"
            and .size < 100000000
          )
        )
        and file.oletools(.).indicators.vba_macros.exists
)
and (
  not profile.by_sender().solicited
  or (
    profile.by_sender().any_messages_malicious_or_spam
    and not profile.by_sender().any_messages_benign
  )
)

Field Validations

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