Attack Mapping

Vulnetix ATT&CK Mapping Skill

Use when

• You need to know which ATT&CK techniques a CVE enables (Initial Access? Execution? Persistence?).
• Building an executive heatmap: which tactics dominate this repo's risk profile.
• Mapping current detection coverage gaps via ATT&CK → D3FEND.
• Correlating multiple CVEs to a shared technique chain (e.g. T1190 + T1059).
• Producing input for a purple-team exercise.

Don't use for

• Generating detection rules for the IDS — use /vulnetix:detection-rules.
• Single-CVE deep-dive — use /vulnetix:exploits.
• IOC pivots — use /vulnetix:ioc-pivot.

Conventions

This skill follows _lib/contract.md: the Vulnetix CLI is auto-installed by hooks, .vulnetix/capabilities.yaml is always present, every vulnetix vdb call is piped through a verified jq filter from _lib/jq/, independent calls run in parallel as concurrent Bash tool calls, and trailing follow-ups are limited to one line. See the contract for output style, memory write rules, and cooldowns.

Produces an ATT&CK technique view of repo risk. Run with a single vuln-id for a focused mapping, or --all-tracked to roll up every entry in .vulnetix/memory.yaml.

Step 1: Decide mode

If $ARGUMENTS matches a vuln-id pattern → single mode. Else if it contains --all-tracked → roll-up mode reading every vulnerabilities.* entry in .vulnetix/memory.yaml (skip those with status not_affected or fixed).

Step 2: Fetch ATT&CK data per vuln

vulnetix vdb attack-techniques "$VULN_ID" -o json | jq -f "${CLAUDE_PLUGIN_ROOT}/skills/_lib/jq/attack-techniques.jq"

Capture: technique IDs (T####), tactic, sub-technique, observed-in-wild count.

Step 3: Render

Single mode — table of techniques with tactic + observation count. Mermaid flowchart from kill-chain tactic → technique → vuln.

Roll-up mode — a heatmap-style table:

| Technique | Tactic | Vuln count | Top affected packages |
|-----------|--------|-----------|----------------------|
| T1190 | Initial Access | 5 | log4j-core, struts2 |

Ranking: by vuln count descending. Top 20 only; total in summary footer.

Step 4: Suggested follow-ups

• For high-frequency techniques → fetch detection rules for the top vulns: /vulnetix:detection-rules <id>
• For Initial Access / Execution tactics → /vulnetix:soc-triage --severity critical

Memory update

Append event: attack-mapping with technique IDs to each touched vuln entry.

Edge cases & gotchas

• vdb attack-techniques <id> (bare) returns help text. Use vdb attack-techniques get <id>.
• vdb attack-techniques get <id> -o json writes to file json; use -o /dev/stdout.
• .attackTechniques[] is OFTEN EMPTY for older CVEs (pre-2024 enrichment gap) — empty array does not mean "no techniques associated", it means "no mapping captured in this corpus".
• --all-tracked mode reads memory.yaml and can be slow for repos with 100+ tracked vulns; one network round-trip per vuln.
• Technique names (name field) are sometimes null in the response; the jq filter falls back gracefully.
• D3FEND counter-techniques are referenced but not inlined — the skill links to the MITRE D3FEND page rather than embedding the full counter-technique catalog.