anti
1ad15470a1
8 YAMLs for the email cohort per Appendix B: open-relay abuse, mass phishing, phishing-kit X-Mailer signatures, IDN/punycode URLs, sender masquerade, malicious attachment, BEC, encoded payload in body. EmailLifter (E.3.12) consumes by rule_id. test_email_rules.py: YAML-present + inert-in-v0 + xfail(strict) precision case gated on E.3.12.
24 lines
528 B
YAML
24 lines
528 B
YAML
rule_id: R0044
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rule_version: 1
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name: idn_homoglyph_url
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description: |
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IDN / Punycode (xn--) URL in email body. Two emits: masquerade
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(T1036.005) and credential-harvest landing-page (T1566.002).
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applies_to:
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- email
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match:
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kind: lifter:email_idn_url
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punycode_prefix: 'xn--'
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emits:
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- tactic: TA0005
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technique_id: T1036
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sub_technique_id: T1036.005
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confidence: 0.9
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- tactic: TA0001
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technique_id: T1566
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sub_technique_id: T1566.002
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confidence: 0.9
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evidence_fields:
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- matched_url
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- decoded_idn
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