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FP fix: Update link_credential_phishing_intent_and_other_indicators.yml #790

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merged 2 commits into from
Sep 18, 2023
Merged

FP fix: Update link_credential_phishing_intent_and_other_indicators.yml #790

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c77b714
Update link_credential_phishing_intent_and_other_indicators.yml
morriscode Sep 13, 2023
855c918
Merge branch 'main' into sam.fp.credphish.otherindicators
morriscode Sep 18, 2023
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7 changes: 4 additions & 3 deletions detection-rules/link_credential_phishing_intent_and_other_indicators.yml
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Original file line number Diff line number Diff line change
Expand Up @@ -279,7 +279,8 @@ source: |
// this is common in link tracking, both for
// benign marketing traffic but also attackers
any(recipients.to,
strings.icontains(..href_url.url, .email.local_part)
.email.domain.valid
and strings.icontains(..href_url.url, .email.local_part)
and strings.icontains(..href_url.url, .email.domain.domain)
)
)
Expand All @@ -290,12 +291,12 @@ source: |
and (
// freemail providers should never be sending this type of email
sender.email.domain.domain in $free_email_providers

// if not freemail, it's suspicious if the sender's root domain
// doesn't match any links in the body
or all(body.links, .href_url.domain.root_domain != sender.email.domain.root_domain)
)

// first-time sender
and (
(
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