Sublime Security medium experimental mql

Open redirect: bestdeals.today

Message contains use of the bestdeals.today open redirect. This has been exploited in the wild.

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Detection Logic

type.inbound
and any(body.links,
        .href_url.domain.root_domain == "bestdeals.today"
        and strings.icontains(.href_url.path, '/redirect')
        and regex.icontains(.href_url.query_params, '(?:^
| &)url=')
)
and sender.email.domain.root_domain != 'bestdeals.today'
and headers.return_path.domain.root_domain != "bestdeals.today"

// negate highly trusted sender domains unless they fail DMARC authentication
and (
  (
    sender.email.domain.root_domain in $high_trust_sender_root_domains
    and not headers.auth_summary.dmarc.pass
  )
  or sender.email.domain.root_domain not in $high_trust_sender_root_domains
)

Field Validations

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