Sublime Security medium experimental mql

Brand impersonation: Blockchain.com

Impersonation of Blockchain.com, usually for credential theft.

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Detection Logic

type.inbound
and (
  regex.imatch(sender.display_name, '\bblockchain\b')
  or strings.ilevenshtein(sender.display_name, 'blockchain') <= 1
  or strings.ilike(sender.email.domain.domain, '*blockchain.com*')
  or any(body.links,
         strings.ilevenshtein(.href_url.domain.root_domain, 'blockchain') == 1
  )
)
and not any(ml.nlu_classifier(body.current_thread.text).topics,
            .name in ("Educational and Research", "Advertising and Promotions")
            and .confidence == "high"
)
and not (
  sender.email.domain.root_domain in~ (
    'blockchain.com',
    'wxblockchain.com',
    'ai-blockchain.com',
    'envisionblockchain.com'
  )
  and coalesce(headers.auth_summary.dmarc.pass, false)
)
and not profile.by_sender_email().solicited

Field Validations

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