• Sublime Core Feed

Description

Impersonation of Chase Bank and related services to harvest credentials or related information such as dates of birth, phone numbers, social security numbers, ATM pin numbers, drivers license numbers, selfies, and ID card photos.

Sublime Security
Created Aug 17th, 2023 • Last updated Mar 2nd, 2026
Source
type.inbound
and (
  strings.ilike(sender.display_name,
                '*chase sapphire*',
                '*chase card services*',
                '*united mileageplus*',
                "echase*"
  )
  or strings.ilevenshtein(sender.display_name, 'chase sapphire') <= 2
  or strings.ilevenshtein(sender.display_name, 'chase card services') <= 2
  or strings.ilevenshtein(sender.display_name, 'united mileageplus') <= 2
  or (
    (
      strings.ilevenshtein(sender.display_name, 'echase') <= 1
      or (
        strings.icontains(sender.display_name, "bank")
        and strings.icontains(subject.base, "chase bank")
      )
    )
    // Negate Chase sender display name if cred theft, callback phishing, and a Chase logo isn't detected
    and not (
      strings.icontains(sender.display_name, 'chase')
      and not (
        any(ml.nlu_classifier(body.current_thread.text).intents,
            .name == "cred_theft" and .confidence in ("medium", "high")
        )
        or any(ml.nlu_classifier(body.current_thread.text).intents,
               .name == "callback_scam" and .confidence in ("medium", "high")
        )
        or any(ml.logo_detect(file.message_screenshot()).brands,
               strings.starts_with(.name, "Chase")
        )
      )
    )
  )
  or regex.icontains(body.current_thread.text,
                     '(Chase|J\.?\s?P\.?\sMorgan)\s(Privacy|Treasury)\sOperations|(Privacy|Treasury)\sOperations\s(Chase|J\.?\s?P\.?\sMorgan)'
  )
)
and not (
  sender.display_name is not null and sender.display_name in~ ("chaser", "case")
)
and sender.email.domain.root_domain not in~ (
  'chase.com',
  'united.com',
  'transunion.com',
  'shopping-chase.com',
  'chasetravel.com',
  'chaseoffers.com'
)

// 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
)
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