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Description

Message contains use of the qrxtech.com open redirect. This has been exploited in the wild.

References

No references.

Sublime Security
Created Jan 28th, 2025 • Last updated Jan 12th, 2026
Source
type.inbound
and any(body.links,
        .href_url.domain.root_domain == "qrxtech.com"
        and strings.iends_with(.href_url.path, 'XMLServer.aspx')
        and strings.icontains(.href_url.query_params, 'HREF=')
        and strings.icontains(.href_url.query_params, 'FUNC=')
        and not strings.icontains(.href_url.query_params,
                                  'HREF=(?:https?(?:%3a|:))?(?:%2f|\/){2}[^&]*qrxtech\.com(?:\&|\/|$)'
        )
)
// remove uses that originate from qrxtech.com
and not any(headers.domains, .root_domain == "qrxtech.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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