Sublime Security medium experimental mql

Brand impersonation: PNC

Impersonation of PNC Financial Services

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Detection Logic

type.inbound
and (
  regex.icontains(sender.display_name, '\PNC\b')
  or strings.ilike(sender.email.domain.domain, '*PNC*')
  or strings.ilike(subject.subject, '*PNC*')
)
and sender.email.domain.root_domain not in~ ('pnc.com', 'pncbank.com')
and sender.email.domain.tld != "pnc"
and any(ml.logo_detect(file.message_screenshot()).brands,
        .name == "PNC" and .confidence in ("medium", "high")
)
and (
  profile.by_sender().prevalence in ("new", "outlier")
  or (
    profile.by_sender().any_messages_malicious_or_spam
    and not profile.by_sender().any_messages_benign
  )
)
// not forwards/replies
and not (
  (length(headers.references) > 0 or headers.in_reply_to is not null)
  and (subject.is_forward or subject.is_reply)
  and length(body.previous_threads) >= 1
)
// 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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