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Simplify detection rules for GoDaddy service abuse #3746

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Simplify detection rules for GoDaddy service abuse #3746

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43 changes: 0 additions & 43 deletions detection-rules/service_abuse_godaddy_infra.yml
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Original file line number Diff line number Diff line change
Expand Up @@ -11,49 +11,6 @@ source: |
and headers.auth_summary.dmarc.pass
)
and any(body.links, .display_text in~ ("Pay Now", "Accept Access"))
and (
(
any(ml.nlu_classifier(body.current_thread.text).intents,
.name in~ ("callback_scam", "cred_theft", "extortion")
and .confidence == "high"
)
)
// manual extortion indicators
or (
regex.icontains(sender.display_name,
'big(\s|[[:punct:]])?brother|seeing(\s|[[:punct:]])?eye'
)
or regex.icontains(body.current_thread.text,
'((I|you).{0,25}(leak|compromise|hack|see|record|expose))|(dirty|little) secret'
)
)
// manual callback phishing indicators
or (
// phone number in display name or subject
any([sender.display_name, subject.base],
regex.icontains(.,
'\b\+?([ilo0-9]{1}.)?\(?[ilo0-9]{3}?\)?.[ilo0-9]{3}.?[ilo0-9]{4}\b'
)
)
// references commonly impersonated brands in body
or strings.ilike(strings.replace_confusables(body.current_thread.text),
"*Pay?Pal*",
"*Best?Buy*",
"*Geek?Squad*",
)
)
// emojis in link display text
or any(body.links,
regex.contains(.display_text,
'[\x{1F300}-\x{1F5FF}\x{1F600}-\x{1F64F}\x{1F680}-\x{1F6FF}\x{1F700}-\x{1F77F}\x{1F780}-\x{1F7FF}\x{1F900}-\x{1F9FF}\x{2600}-\x{26FF}\x{2700}-\x{27BF}\x{2300}-\x{23FF}]'
)
)
// links leading to cloudflare R2 or edge services
or any(body.links,
.href_url.domain.root_domain in~ ("r2.dev", "pages.dev", "workers.dev")
)
)

attack_types:
- "Callback Phishing"
- "Extortion"
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