High Severity
VIP impersonation with charitable donation fraud
Description
Fake email thread shows a VIP requesting a donation to a charity, usually addressed to Accounts Payable departments. Can result in monetary loss.
References
No references.
Sublime Security
Created Oct 8th, 2024 • Last updated Oct 8th, 2024
Feed Source
Sublime Core Feed
Source
type.inbound
and strings.ilike(body.current_thread.text, "*charity*", "*gala*", "*donation*", "*donor*")
and any(ml.nlu_classifier(body.current_thread.text).entities,
.name == "financial"
)
and any(ml.nlu_classifier(body.current_thread.text).entities,
.name == "request"
)
and (
any($org_vips, strings.icontains(body.html.inner_text, .display_name))
or any($org_vips, strings.icontains(body.plain.raw, .display_name))
)
and (
(
(
strings.istarts_with(subject.subject, "RE:")
or strings.istarts_with(subject.subject, "FW:")
or strings.istarts_with(subject.subject, "FWD:")
)
and (
(length(headers.references) == 0 and headers.in_reply_to is null)
or not any(headers.hops,
any(.fields, strings.ilike(.name, "In-Reply-To"))
)
)
)
// fake thread, but no indication in the subject line
// current_thread pulls the recent thread, but the full body contains the fake "original" email
or (
not (
(
strings.istarts_with(subject.subject, "RE:")
or strings.istarts_with(subject.subject, "FWD:")
)
)
and 3 of (
strings.icontains(body.html.display_text, "from:"),
strings.icontains(body.html.display_text, "to:"),
strings.icontains(body.html.display_text, "sent:"),
strings.icontains(body.html.display_text, "subject:")
)
and (
length(body.current_thread.text) + 100 < length(body.html.display_text)
)
// negating bouncebacks
and not any(attachments,
.content_type in ("message/delivery-status", "message/rfc822")
)
)
)
and (
profile.by_sender().prevalence in ("new", "rare")
or profile.by_sender().days_known > 30
)
and not profile.by_sender().any_false_positives
Playground
Test against your own EMLs or sample data.