• Sublime Core Feed
Medium Severity

Brand impersonation: QuickBooks notification from Intuit themed company name

Description

This detection rule matches on QuickBooks notifications that feature company names impersonating Intuit and QuickBooks.

References

No references.

Sublime Security
Created Dec 16th, 2024 • Last updated Aug 5th, 2025
Source
type.inbound

// Legitimate Intuit sending infratructure
and sender.email.email == "quickbooks@notification.intuit.com"
and headers.auth_summary.spf.pass
and headers.auth_summary.dmarc.pass
and strings.ends_with(headers.auth_summary.spf.details.designator,
                      '.intuit.com'
)
and (
  // the reply-to contains Inuit Themes
  any(headers.reply_to,
         (
           strings.icontains(.email.email, 'intuit')
           or strings.icontains(.email.domain.domain, 'quickbooks')
         )
         and not (.email.domain.root_domain in ('intuit.com', 'quickbooks.com'))
  )
  // the "company" part of the message
  or regex.icontains(body.html.raw,
                     '<(?:div|p) class="company(?:Name|Details)[^\"]*\"[^\>]*\>[^\<]*(?:Intuit|Quickbooks).*</(?:p|div)>'
  )
)
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