Medium Severity

Link: Fraudulent state business filing notice

Labels

Credential Phishing

Free subdomain host

Social engineering

Impersonation: Brand

Content analysis

Natural Language Understanding

URL analysis

Description

Detects inbound messages impersonating official state business compliance communications, such as Statements of Information or Certificates of Good Standing, that contain links to free subdomain hosting services. These messages use urgent language around filing deadlines or business suspensions to pressure recipients into clicking credential-harvesting links.

References

No references.

Sublime Security

Created Jul 14th, 2026 • Last updated Jul 14th, 2026

Feed Source

Sublime Core Feed

Source

GitHub

type.inbound
and not subject.is_reply
and not subject.is_forward
and 2 of (
  strings.icontains(body.current_thread.text, "Statement of Information"),
  strings.icontains(body.current_thread.text, "Secretary of State"),
  regex.icontains(body.current_thread.text, 'filing (?:is )?overdue'),
  strings.icontains(body.current_thread.text, "Certificate of Good Standing"),
  strings.icontains(body.current_thread.text, "business suspension")
)
and any(body.current_thread.links,
        .href_url.domain.root_domain in $free_subdomain_hosts
)
and any(ml.nlu_classifier(body.current_thread.text).intents,
        .name == "cred_theft" and .confidence == "high"
)
// negate highly trusted sender domains unless they fail DMARC authentication
and not (
  sender.email.domain.root_domain in $high_trust_sender_root_domains
  and coalesce(headers.auth_summary.dmarc.pass, false)
)

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