IdentityLifter owns lifter:identity_* — currently R0003 (password
spraying). CredentialLifter owns lifter:credential_* — R0001 generic
auth brute, R0002 password guessing, R0004 credential reuse, R0005
valid-account use, R0006 default credentials.
YAMLs R0001/R0002/R0003/R0005/R0006 had their match.kind normalised
to fit the lifter prefix scheme — the design doc's promised "YAMLs
normalised in a separate refactor commit" lands here.
Identity-rollup tags null out attacker_uuid on emit so the worked-
example invariant holds (the tag belongs to the Identity, never to
one member IP).
Tests: test_identity_lifter.py + test_credential_lifter.py cover
each predicate's positive/negative path, state modulation
(disabled/clipped/expired), source-kind gating, and idempotent
replay. test_lifter_absence and test_lifters updated for the new
ctor signature.
SMTP message-level technique tagger per Appendix A.6: open relay abuse
(rcpt_count + foreign From), mass phishing (rcpt_count + body simhash),
phishing-kit X-Mailer, IDN/punycode URL, sender masquerade composite
(From/Return-Path/DKIM/SPF), malicious attachment (macro/.lnk/.iso/.img/
hash match), BEC subject+body composite, encoded payload in body.
PII discipline (TTP_TAGGING.md §'Hard parts §6') is enforced at the
lifter layer via _filter_evidence(): emitted TTPTag.evidence is
restricted to the EmailEvidence-allowed allowlist (body_sha256,
matched_headers — names only, rcpt_domain_set — domains only,
attachment_sha256s, rcpt_count) plus PII-safe match discriminators
(matched_kit, matched_trigger, matched_url_host, etc). Raw addresses,
raw body bytes, full URLs, and decoded base64 previews NEVER appear in
evidence — defense-in-depth over the YAML evidence_fields hint.
Tests: tests/ttp/test_email_lifter.py per-rule positive + negative +
PII allowlist guard + state modulation. tests/ttp/rule_precision/
test_email_rules.py xfail flipped to real precision (R0041-R0048
H-band ≥95%). Corpus rows updated to acknowledge that R0045 (masquerade)
co-fires with R0041 / R0047 when the sender-masquerade signals are
present alongside open-relay or BEC patterns — overlap is by design,
not a precision bug.
Browser-payload derivations per Appendix A.9: navigator.webdriver flag,
canvas/audio/WebGL automation hash matches (Puppeteer/Playwright/
Selenium/curl-impersonate), WebRTC IP leak, TZ/language vs source-IP
geo mismatch, navigator.platform vs userAgent vs WebGL renderer
inconsistency.
Evidence shape pinned to CanaryFingerprintEvidence (metric +
matched_signature) — raw fingerprint blobs (canvas hashes, full UAs,
navigator.platform values) explicitly NOT carried into TTPTag.evidence
per TTP_TAGGING.md §'Hard parts §7' (enrichment vs tag boundary). The
identity-merge guard rail is preserved: composite fp.id matches across
IPs are NOT a TTP, so no rule fires on the bare hash.
Tests: tests/ttp/test_canary_fingerprint_lifter.py per-rule positive +
negative + evidence-shape guard + state modulation.
tests/ttp/rule_precision/test_canary_rules.py xfail flipped to real
precision (R0049/R0050/R0051/R0053 H-band ≥95%; R0052 M-band ≥80%).
Per-provider verdict translator for AbuseIPDB, GreyNoise, Feodo Tracker,
and ThreatFox per Appendix A.10. Each rule's predicate inspects payload
fields produced by the enrich worker (no DB I/O, no decnet.intel.*
imports — E.2.7 decoupling guard preserved). AbuseIPDB confidence is
scaled by abuse_confidence_score / 100; categories drive per-technique
fan-out. R0058 aggregate-bump is a no-op in v0 (cross-tag bump deferred
to E.3.14 worker bootstrap).
Per-provider null tolerance is the steady state — a missing provider
column produces zero tags from that rule, never an error.
Tests:
- tests/ttp/test_intel_lifter.py — per-provider positive + negative +
state modulation + decoupling source-import guard.
- tests/ttp/rule_precision/test_intel_rules.py — xfail flipped, real
precision driven over seed_intel.jsonl (R0054-R0057 H-band ≥95%;
R0058 skipped as bump-only).
- tests/ttp/test_lifter_absence.py — IntelLifter all-populated test
flipped from xfail-strict to real assertion with realistic payload.
- tests/ttp/test_lifters.py — partial-null xfail flipped to real
assertion.
Reads pre-shaped session aggregates from TaggerEvent.payload and emits
techniques per Appendix A behavior tables. Per-rule predicates dispatch
on match.kind (lifter:behavioral_<name>); the lifter holds its own
RuleIndex watching the same RuleStore as the engine, so disable / clip /
TTL state reaches lifter-bound rules through the same atomic-swap path.
R0032/R0036/R0037/R0040 YAMLs had over-escaped regex strings (\\
instead of \\) — fixed in place.
Factory wired so default get_tagger() returns CompositeTagger with
BehavioralLifter shipped; remaining three lifters (E.3.10-E.3.12) land
in subsequent commits.
E.2.6 contract preserved via TolerantTagger: empty payload steady-state
yields [] with zero ERROR records. Disabled / clipped / expired state
verified.
5 YAMLs for the intel-verdict cohort per Appendix B / A.10:
AbuseIPDB category mapping, GreyNoise classification, Feodo
Tracker hit, ThreatFox IOC type, aggregate-malicious bump-only.
IntelLifter (E.3.10) consumes by rule_id and tolerates absence
silently (null provider column → no tag).
R0058 is the meta bump-only rule — emits a single confidence=0.0
sentinel so it validates and surfaces in the catalogue, but the
repository's sub-0.3 drop ensures no fresh tag persists if the
fanout fires accidentally. test_intel_rules.py pins that
zero-confidence invariant.
Marks E.3.8 done in development/TTP_TAGGING.md with the cohort-
split summary.
5 YAMLs for the canary-fingerprint cohort per Appendix B / A.9:
navigator.webdriver flag, automation canvas/audio/WebGL hash match,
WebRTC IP leak, TZ/lang vs geo mismatch, platform inconsistency.
CanaryFingerprintLifter (E.3.11) consumes by rule_id.
test_canary_rules.py: YAML-present + inert-in-v0 + xfail(strict)
gated on E.3.11.
10 YAMLs for the behavioral / cross-event cohort per Appendix B:
beaconing, data destruction, ransom note, web exfil, DB mass-read,
credentials-in-files, k8s SA token harvest, Docker host escape,
LLMNR poisoning, TFTP router-config retrieval.
Every rule is lifter-bound (BehavioralLifter / IdentityLifter) —
the v0 RuleEngine cannot count, aggregate, or compose cross-event
signals, so these YAMLs declare the technique mappings the lifter
will consume by rule_id at E.3.9. Their match specs use a
'kind: lifter:*' shape inert to the regex matcher.
test_behavioral_rules.py asserts each YAML compiles, none fire
from the v0 engine (FP regression guard against a YAML drifting
into a regex), and an xfail(strict=True, reason='impl phase E.3.9')
precision case that will flip green when the lifter lands.
30 YAMLs for the shell/command rule cohort per Appendix B (rules/ttp/).
Splits into engine-active (R0007-R0029, regex on command_text /
raw_url / user_agent) and lifter-bound (R0001-R0006, R0030 — the
v0 RuleEngine cannot count auth attempts, do identity rollups, or
parse fingerprint blobs; the BehavioralLifter / IdentityLifter /
CredentialLifter consume them by rule_id at E.3.9 / E.3.13).
test_command_rules.py asserts:
- every R000N has a YAML that compiles
- lifter-bound rules NEVER fire from the v0 engine (regression
guard against a YAML drifting into a regex match.spec)
- engine-active rules meet their Appendix-C precision target
against the seed corpus (≥0.95 high-conf, ≥0.80 medium)
Conftest fixes: precision_engine moved to module-scope so module-
scope precomputed dispatch fixture (fired_by_label) can request it;
_RULES_DIR path bumped from parents[2] to parents[3] so the loader
resolves the project root regardless of pytest cwd; make_event
synthesizes attacker_uuid so TTPTag's anchor invariant is satisfied.
Seed corpus broadened: positive examples for every regex rule plus
6 negative examples across innocuous shell verbs (ls, echo, cd, ps,
df, free) so FPs surface in precision rather than passing vacuously.
Sub-step preceding the rule-pack commits per TTP_TAGGING.md:2967.
Adds the per-rule precision suite scaffolding under
tests/ttp/rule_precision/:
- conftest.py: precision_engine fixture (RuleEngine populated from
./rules/ttp/), corpus_loader (real → seed → empty fallback),
precision_for() helper for TP/FP accounting.
- _build_corpus.py: extractor for a real prod corpus pull. Mandatory
--exclude-ip / DECNET_TTP_CORPUS_EXCLUDE_IPS — operator IPs never
end up in the committed exclusion list. Pulls both 'command' and
'unknown_command' event types.
- corpus/seed_*.jsonl: synthetic seed rows for each cohort so the
harness exercises in clean checkouts.
- corpus/*.jsonl (operator-built) is gitignored.
- test_corpus_loads.py: sentinel that every seed file parses.
