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Update Corporate Impersonation Key Phrasing #3722

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Update Corporate Impersonation Key Phrasing #3722

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fc20a23
Refine regex patterns for phishing detection
missingn0pe Dec 30, 2025
83480fb
Enhance detection rules for credential phishing
missingn0pe Jan 9, 2026
41270b7
Update NCG in display_text
missingn0pe Jan 9, 2026
14cc3e8
Update ilike wildcard
missingn0pe Jan 9, 2026
62720bb
Update negation readability
missingn0pe Jan 9, 2026
0639b06
Merge branch 'main' into missingn0pe-corporate-impersonation-1
aidenmitchell Jan 12, 2026
8d74ccb
Auto-format MQL and add rule IDs
Jan 12, 2026
e250caf
Merge branch 'main' into missingn0pe-corporate-impersonation-1
missingn0pe Jan 15, 2026
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12 changes: 6 additions & 6 deletions ...ction-rules/credential_phishing_corporate_services_impersonation_with_suspicious_link.yml
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Original file line number Diff line number Diff line change
Expand Up @@ -20,7 +20,7 @@ source: |
(
length(subject.subject) > 20
and regex.icontains(subject.subject,
'(time.{0,4}sheet)|(employ|complete|update(?:d| to)).{0,30}(benefit|handbook|comp\b|compensation|salary|\bpay(?:roll)?\b|policy|conduct|acknowl|PTO|vacation|assess|eval)|(HR|Human Resources).{0,5}ADM[il]N',
'(time.{0,4}sheet)|(employ|complete|update(?:d| to| regarding our)).{0,30}(benefit|handbook|comp\b|compensation|salary|\bpay(?:roll)?\b|policy|policies|conduct|acknowl|PTO|vacation|assess|eval)|(HR|Human Resources).{0,5}ADM[il]N',
// shorten the distance to 3 or less words for the word "review"
// special handling of benefits
'\breview\b(?:\w+(?:\s\w+)?|[[:punct:]]+|\s+){0,3}(benefits?(?:$|.?(?:statement|enrollment))|handbook|comp\b|compensation|salary|bonus|\bpay(?:roll)?\b)',
Expand Down Expand Up @@ -65,10 +65,11 @@ source: |
and (
any(body.links,
regex.icontains(.display_text,
'((verify|view|click|download|goto|keep|Vιew|release|access|open|allow|deny).{0,10}(request|here|report|attachment|current|download|fax|file|document|message|same|doc|access)s?)'
'(?:verify|view|click|download|goto|keep|Vιew|release|access|open|allow|deny|new).{0,10}(?:request|here|report|attachment|current|download|fax|file|document|message|same|doc|access|polic(?:y|ie))s?'
)
and not strings.ilike(.display_text, "*unsub*")
and not strings.ilike(.href_url.url, "*privacy-policy*")
and not strings.ilike(.display_text, "*privacy?policy*")
and not strings.ilike(.href_url.url, "*privacy?policy*")
and not strings.ilike(.display_text, "*REGISTER*")

// from a low reputation link
Expand Down Expand Up @@ -190,9 +191,8 @@ source: |
or (
profile.by_sender().any_messages_malicious_or_spam
and profile.by_sender().any_messages_benign
and (
not headers.auth_summary.dmarc.pass or not headers.auth_summary.spf.pass
)
and not headers.auth_summary.dmarc.pass
and not headers.auth_summary.spf.pass
)
)
// negate instances where proofpoint sends a review of a reported message via analyzer
Expand Down
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