Files
DECNET/rules/ttp/R0043.yaml
anti 1ad15470a1 feat(ttp): E.3.8 R0041-R0048 email cohort
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.
2026-05-01 09:19:56 -04:00

23 lines
490 B
YAML

rule_id: R0043
rule_version: 1
name: phishing_kit_xmailer
description: |
X-Mailer header matches a curated phishing-kit signature DB
(PHPMailer-of-known-kits, GreatHorn known-bad, etc.).
applies_to:
- email
match:
kind: lifter:email_xmailer_kit
catalog: phishing_kits
emits:
- tactic: TA0001
technique_id: T1566
confidence: 0.9
- tactic: TA0042
technique_id: T1588
sub_technique_id: T1588.001
confidence: 0.85
evidence_fields:
- x_mailer
- matched_kit