Sublime Security low experimental mql
Link: URL shortener with copy-paste instructions and credential theft language
Detects messages containing only URL shorteners with copy-paste instructions and high-confidence credential theft language, typically used to evade URL analysis by requiring manual URL entry.
Detection Logic
type.inbound
and length(body.current_thread.links) > 0
and all(body.current_thread.links,
.href_url.domain.root_domain in $url_shorteners
)
and (
strings.icontains(body.current_thread.text, 'copy')
and (
strings.icontains(body.current_thread.text, 'pasting')
or strings.icontains(body.current_thread.text, 'paste')
)
)
and any(ml.nlu_classifier(body.current_thread.text).intents,
.name == 'cred_theft' and .confidence == 'high'
)
and (
// self sender
(
length(recipients.to) == 1
and sender.email.email == recipients.to[0].email.email
)
// or the sender is all undisclosed or there is no recipients
or (
length(recipients.to) == 0
or all(recipients.to, .email.domain.valid == false)
)
)
// negate display urls that match the sender root domain
and not any(body.current_thread.links,
.display_url.domain.root_domain == sender.email.domain.root_domain
) Field Validations
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