Sublime Security medium experimental mql

Attachment with auto-opening VBA macro (unsolicited)

Recursively scans files and archives to detect embedded VBA files with an auto open exec.

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Detection Logic

type.inbound
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 any(file.explode(.), any(.scan.vba.auto_exec, . == "AutoOpen"))
)
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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