type.inbound
and (
(
// few links
0 < length(body.links) < 20
// fewer unique root domain links
and length(distinct(body.links, .href_url.domain.root_domain)) < 10
// sender domain matches no body domains
and all(body.links,
.href_url.domain.root_domain != sender.email.domain.root_domain
)
)
or beta.scan_qr(file.message_screenshot()).found
)
// negate bouncebacks and undeliverables
and not any(attachments,
.content_type in (
"message/global-delivery-status",
"message/delivery-status"
)
)
// suspicious subject or display name
and (
regex.icontains(subject.subject,
"termination.*notice",
"38417",
":completed",
"[il1]{2}mit.*ma[il1]{2} ?bo?x",
"[il][il][il]egai[ -]",
"[li][li][li]ega[li] attempt",
"[ng]-?[io]n .*block",
"[ng]-?[io]n .*cancel",
"[ng]-?[io]n .*deactiv",
"[ng]-?[io]n .*disabl",
"action.*required",
"abandon.*package",
"about.your.account",
"acc(ou)?n?t (is )?on ho[li]d",
"acc(ou)?n?t.*terminat",
"acc(oun)?t.*[il1]{2}mitation",
"access.*limitation",
"account (will be )?block",
"account.*de-?activat",
"account.*locked",
"account.*re-verification",
"account.*security",
"account.*suspension",
"account.has.been",
"account.has.expired",
"account.will.be.blocked",
"account v[il]o[li]at",
"activity.*acc(oun)?t",
"almost.full",
"app[li]e.[il]d",
"authenticate.*account",
"been.*suspend",
"clos.*of.*account.*processed",
"confirm.your.account",
"courier.*able",
"crediential.*notif",
"deactivation.*in.*progress",
"delivery.*attempt.*failed",
"document.received",
"documented.*shared.*with.*you",
"dropbox.*document",
"e-?ma[il1]+ .{010}suspen",
"e-?ma[il1]{1} user",
"e-?ma[il1]{2} acc",
"e-?ma[il1]{2}.*up.?grade",
"e.?ma[il1]{2}.*server",
"e.?ma[il1]{2}.*suspend",
"email.update",
"faxed you",
"fraud(ulent)?.*charge",
"from.helpdesk",
"fu[il1]{2}.*ma[il1]+[ -]?box",
"has.been.*suspended",
"has.been.limited",
"have.locked",
"he[li]p ?desk upgrade",
"heipdesk",
"i[il]iega[il]",
"ii[il]ega[il]",
"incoming e?mail",
"incoming.*fax",
"lock.*security",
"ma[il1]{1}[ -]?box.*quo",
"ma[il1]{2}[ -]?box.*fu[il1]",
"ma[il1]{2}box.*[il1]{2}mit",
"ma[il1]{2}box stor",
"mail on.?hold",
"mail.*box.*migration",
"mail.*de-?activat",
"mail.update.required",
"mails.*pending",
"messages.*pending",
"missed.*shipping.*notification",
"missed.shipment.notification",
"must.update.your.account",
"new [sl][io]g?[nig][ -]?in from",
"new voice ?-?mail",
"notifications.*pending",
"office.*3.*6.*5.*suspend",
"office365",
"on google docs with you",
"online doc",
"password.*compromised",
"periodic maintenance",
"potential(ly)? unauthorized",
"refund not approved",
"report",
"revised.*policy",
"scam",
"scanned.?invoice",
"secured?.update",
"security breach",
"securlty",
"signed.*delivery",
"statement is ready",
"status of your .{314}? ?delivery",
"susp[il1]+c[il1]+ous.*act[il1]+v[il1]+ty",
"suspicious.*sign.*[io]n",
"suspicious.activit",
"temporar(il)?y deactivate",
"temporar[il1]{2}y disab[li]ed",
"temporarily.*lock",
"un-?usua[li].activity",
"unable.*deliver",
"unauthorized.*activit",
"unauthorized.device",
"undelivered message",
"unread.*doc",
"unusual.activity",
"upgrade.*account",
"upgrade.notice",
"urgent message",
"urgent.verification",
"v[il1]o[li1]at[il1]on security",
"va[il1]{1}date.*ma[il1]{2}[ -]?box",
"verification ?-?require",
"verification( )?-?need",
"verify.your?.account",
"web ?-?ma[il1]{2}",
"web[ -]?ma[il1]{2}",
"will.be.suspended",
"your (customer )?account .as",
"your.office.365",
"your.online.access"
)
or any($suspicious_subjects, strings.icontains(subject.subject, .))
or regex.icontains(sender.display_name,
"Admin",
"Administrator",
"Alert",
"Assistant",
"Billing",
"Benefits",
"Bonus",
"CEO",
"CFO",
"CIO",
"CTO",
"Chairman",
"Claim",
"Confirm",
"Critical",
"Customer Service",
"Deal",
"Discount",
"Director",
"Exclusive",
"Executive",
"Fax",
"Free",
"Gift",
"/bHR/b",
"Helpdesk",
"Human Resources",
"Immediate",
"Important",
"Info",
"Information",
"Invoice",
'\bIT\b',
"Legal",
"Lottery",
"Management",
"Manager",
"Member Services",
"Notification",
"Offer",
"Operations",
"Order",
"Partner",
"Payment",
"Payroll",
"President",
"Premium",
"Prize",
"Receipt",
"Refund",
"Registrar",
"Required",
"Reward",
"Sales",
"Secretary",
"Security",
"Service",
"Signature",
"SSA",
"Storage",
"Support",
"Sweepstakes",
"System",
"Tax",
"Tech Support",
"Update",
"Upgrade",
"Urgent",
"Validate",
"Verify",
"VIP",
"Webmaster",
"Winner",
)
or any(body.links, strings.ends_with(.href_url.url, ".exe"))
)
// link can't be scanned due to Cloudflare captcha
and (
any(body.links,
(
strings.icontains(ml.link_analysis(., mode="aggressive").final_dom.display_text,
"cloudflare"
)
// includes the turnstile CAPTCHA
or (
strings.icontains(ml.link_analysis(., mode="aggressive").final_dom.raw,
'https://challenges.cloudflare.com/turnstile/'
)
// has a short body length indicating the page is gated behind the turnstile instead
// of just including the turnstile
and length((
ml.link_analysis(., mode="aggressive").final_dom.display_text
)
) < 200
)
)
and not (
( // a Cloudflare error page
strings.ilike(ml.link_analysis(., mode="aggressive").final_dom.display_text,
"*error code*"
)
and any(ml.link_analysis(., mode="aggressive").final_dom.links,
strings.icontains(.href_url.query_params,
"utm_source=errorcode"
)
)
) // a cookie warning mentioning Cloudflare
or regex.icontains(ml.link_analysis(., mode="aggressive").final_dom.display_text,
"cookie.{0,50}Cloudflare"
)
or ml.link_analysis(., mode="aggressive").effective_url.domain.root_domain in (
"marketbeat.com"
)
)
)
or any(beta.scan_qr(file.message_screenshot()).items,
.type == "url"
and (
strings.icontains(ml.link_analysis(.url, mode="aggressive").final_dom.display_text,
"cloudflare"
)
// includes the turnstile CAPTCHA
or (
strings.icontains(ml.link_analysis(.url, mode="aggressive").final_dom.raw,
'https://challenges.cloudflare.com/turnstile/'
)
// has a short body length indicating the page is gated behind the turnstile instead
// of just including the turnstile
and length((
ml.link_analysis(.url, mode="aggressive").final_dom.display_text
)
) < 200
)
)
and not (
( // a Cloudflare error page
strings.ilike(ml.link_analysis(.url, mode="aggressive").final_dom.display_text,
"*error code*"
)
and any(ml.link_analysis(.url, mode="aggressive").final_dom.links,
strings.icontains(.href_url.query_params,
"utm_source=errorcode"
)
)
) // a cookie warning mentioning Cloudflare
or regex.icontains(ml.link_analysis(.url, mode="aggressive").final_dom.display_text,
"cookie.{0,50}Cloudflare"
)
or ml.link_analysis(.url, mode="aggressive").effective_url.domain.root_domain in (
"marketbeat.com"
)
)
)
)
and (
not profile.by_sender_email().solicited
or (
profile.by_sender().any_messages_malicious_or_spam
and not profile.by_sender().any_messages_benign
)
)
// 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
)
and not profile.by_sender().any_messages_benign
Playground
Test against your own EMLs or sample data.