Sublime Security high experimental mql

Attachment: Office file contains OLE relationship to credential phishing page

Office file OLE relationship link is a credential page, or contains credential phishing language.

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Detection Logic

type.inbound
and any(attachments,
        (
          .file_extension in~ $file_extensions_macros
          or (
            .file_extension is null
            and .file_type == "unknown"
            and .content_type == "application/octet-stream"
            and .size < 100000000
          )
        )
        and length(file.oletools(.).relationships) < 500
        and any(file.oletools(.).relationships,
                (
                  any(ml.nlu_classifier(ml.link_analysis(.target_url).final_dom.display_text
                      ).intents,
                      .name == "cred_theft"
                      and .confidence in ("medium", "high")
                  )
                  and .target_url.domain.root_domain not in (
                    "google.com",
                    "goo.gl"
                  )
                  and ml.link_analysis(.target_url).effective_url.domain.domain != "login.microsoftonline.com"
                )
                or ml.link_analysis(.target_url).credphish.disposition == "phishing"
        )
)
and (
  (
    profile.by_sender().prevalence in ("new", "outlier")
    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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