• Sublime Core Feed

Description

Impersonation of Wells Fargo Bank.

Sublime Security
Created Aug 17th, 2023 • Last updated Jan 15th, 2025
Source
type.inbound
and (
  sender.display_name =~ 'wellsfargo'
  or strings.ilevenshtein(strings.replace_confusables(sender.display_name), 'wellsfargo') <= 1
  or regex.icontains(strings.replace_confusables(sender.display_name), 'we(ll|ii)s?\s?farg(o|o͙)')
  or strings.ilike(sender.email.domain.domain, '*wellsfargo*')
  or strings.ilike(subject.subject, '*wells fargo security*')
  or strings.ilike(body.plain.raw, '*wells fargo security team*')
  or strings.ilike(body.html.inner_text, '*wells fargo security team*')
)
and sender.email.domain.root_domain not in~ (
  'wellsfargo.com',
  'wellsfargoadvisors.com',
  'transunion.com',
  'wellsfargoemail.com',
  'wellsfargorewards.com',
  'comcast-spectacor.com',
  'investordelivery.com',
  'comcastspectacor.com',
  'wfadvisors.com',
  'wellsfargomerchantservicesllc.com'
)
and (
  sender.email.email not in $recipient_emails
  or regex.icontains(sender.email.email, "no.?reply")
)

// 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
  or sender.email.email in ("drive-shares-noreply@google.com", "drive-shares-dm-noreply@google.com")  // Google Drive abuse has been observed
)
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