Conciseness

The workflow steps and example blocks are tight, but the 'Key Concepts' table (Process Hollowing, Beacon, Dropper, IOC) and the 'Tools & Systems' section explain standard malware terminology and tools Claude already knows — more than minor over-explanation, fitting anchor 3 ('some unnecessary explanation') rather than anchor 4.

Actionability

Each step carries concrete, specific guidance (named platforms, query targets, ATT&CK technique IDs) plus detailed example artifacts like the detection summary and report template, but no executable command/query syntax is given and the bundled agent.py automation is never surfaced — anchor 4's 'mostly executable guidance with minor gaps'.

Workflow Clarity

Six clearly sequenced steps with explicit validation checkpoints ('Run a full EDR scan to verify no artifacts remain', 'Monitor for 72 hours for any recurrence', 'Verify that C2 traffic has completely ceased'), a conditional recovery loop (reimage if eradication confidence is low), and an eradication checklist in the output format — matching anchor 5.

Progressive Disclosure

The body is well-sectioned, but the bundle's references/api-reference.md and scripts/agent.py are never referenced or signaled anywhere in SKILL.md, leaving relevant automation and API detail undiscoverable — anchor 3's 'references present but not clearly signaled' rather than anchor 4's 'references mostly clear'.

Specificity

Lists multiple concrete actions covering the full IR lifecycle — 'identifying the malware family, determining infection vectors, assessing spread, and executing containment, analysis, eradication, and recovery procedures' — in third-person voice with no coverage gaps, matching the comprehensive anchor rather than the 'minor gaps' anchor below it.

Completeness

Explicitly answers both 'what' (the full list of response actions aligned to MITRE ATT&CK) and 'when' ('Use when responding to a confirmed or suspected malware infection, including trojan/worm/ransomware outbreaks, malware triage, or infected endpoint remediation'), mirroring the anchor-5 example structure exactly.

Trigger Term Quality

Natural trigger phrases are comprehensively covered with synonyms: 'confirmed or suspected malware infection', 'trojan/worm/ransomware outbreaks', 'malware triage', 'infected endpoint remediation' — terms a user would actually say, matching the synonym-inclusive anchor 5 rather than anchor 4's 'a few natural terms missing'.

Distinctiveness Conflict Risk

The enterprise-endpoint malware IR niche is clear with distinct malware-specific triggers, but 'executing containment... procedures' overlaps with general incident-response/breach-containment skills and the boundary against research-oriented malware analysis (stated only in the body) is absent — fitting anchor 4's 'minor overlap risk with closely related skills' better than anchor 5's minimal conflict risk.