Medium Severity
Brand impersonation: Interac
Description
Impersonation of the Canadian interbanking network Interac. Seen in the wild impersonating carbon tax rebates and tax return refunds.
References
No references.
Sublime Security
Created Sep 16th, 2024 • Last updated Sep 16th, 2024
Feed Source
Sublime Core Feed
Source
type.inbound
and (
strings.ilike(sender.display_name, '*interac e-transfer*')
or strings.ilike(sender.display_name, "*interac e?trasfer*")
or strings.ilike(subject.subject, '*interac e-transfer*')
or strings.ilevenshtein(sender.display_name, 'interac e-transfer') <= 2
)
and sender.email.domain.root_domain not in ('interac.ca')
and 1 of (
any(ml.nlu_classifier(body.current_thread.text).entities,
.name == "org" and strings.icontains(.text, "interac")
),
any(ml.nlu_classifier(body.current_thread.text).entities,
.name == "financial"
),
)
and not profile.by_sender().solicited
// 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
)
Playground
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