enriching-iocs-with-threat-intel-sources

enriching-iocs-with-threat-intel-sources is a skill for Claude Code, Codex from meltedinhex/analyst-ai-pack. It costs 75 tokens per session (741 once invoked), scanned A, original, Apache-2.0.

A threat-intelligence workflow for adding background information to indicators of compromise (IOCs), such as suspicious domains, IP addresses, URLs, and file hashes. It uses passive sources including reputation records, passive DNS, WHOIS, and malware-sample databases.

In plain words
What is it for?
Use it to plan safe lookups for suspicious indicators, find related infrastructure and past sightings, and score confidence before reporting or taking action.
Why use it?
It helps determine how trustworthy an indicator is and what systems or activity it may be linked to without alerting an attacker. It also flags risks such as exposing an internal sample to a public sandbox.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it to plan safe lookups for suspicious indicators, find related infrastructure and past sightings, and score confidence before reporting or taking action.

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Install with agentmods
npx agentmods add skills/meltedinhex/analyst-ai-pack/enriching-iocs-with-threat-intel-sources
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add meltedinhex/analyst-ai-pack --skill enriching-iocs-with-threat-intel-sources
Clone the repo
git clone --depth 1 https://github.com/meltedinhex/analyst-ai-pack

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for enriching-iocs-with-threat-intel-sources

README.md
[![agentmods](https://agentmods.dev/badge/skills/meltedinhex/analyst-ai-pack/enriching-iocs-with-threat-intel-sources/github.svg)](https://agentmods.dev/skills/meltedinhex/analyst-ai-pack/enriching-iocs-with-threat-intel-sources)
Your own site
<a href="https://agentmods.dev/skills/meltedinhex/analyst-ai-pack/enriching-iocs-with-threat-intel-sources"><img src="https://agentmods.dev/badge/skills/meltedinhex/analyst-ai-pack/enriching-iocs-with-threat-intel-sources/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for enriching-iocs-with-threat-intel-sources

Your own site · 80×15
<a href="https://agentmods.dev/skills/meltedinhex/analyst-ai-pack/enriching-iocs-with-threat-intel-sources"><img src="https://agentmods.dev/badge/skills/meltedinhex/analyst-ai-pack/enriching-iocs-with-threat-intel-sources.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 75 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 741 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00075 $0.00741
Opus 5 $0.00037 $0.00370
Sonnet 5 $0.00015 $0.00148
Haiku 4.5 $0.00007 $0.00074

Measured 12d ago against content hash 327a3c2b9c09, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

enriching-iocs-with-threat-intel-sources scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 12d ago.

The scan reads SKILL.md. This mod also ships 1 executable file (scripts/analyst.py), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

skills/enriching-iocs-with-threat-intel-sources/SKILL.md · 98 lines

How it starts

The opening of the file, as written. The whole thing — 98 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Enriching IOCs with Threat Intel Sources

When to Use

  • You have atomic indicators and need context: reputation, related infrastructure, first/last seen, and known associations.
  • You are scoring indicator confidence before acting or reporting.
  • You must plan lookups without leaking your investigation to the adversary.

Do not use active interaction (visiting a C2 URL, resolving a live domain from your own network) for enrichment — use passive sources to avoid tipping off the adversary.

Prerequisites

  • Defanged indicators (from the defanging skill) and access to enrichment sources/APIs.
  • Awareness of each source's operational-security implications.

Safety & Handling

  • Prefer passive sources (passive DNS, sample DBs, reputation feeds) over active probing.
  • Never submit a customer/internal sample to a public sandbox without authorization — it becomes publicly retrievable and can expose sensitive data.

Workflow

Step 1: Group indicators by type

Separate hashes, domains, IPs, and URLs; each maps to different enrichment sources.

Step 2: Plan the right lookups

Map each type to passive sources: hashes → sample/AV databases; domains → passive DNS, WHOIS, reputation; IPs → ASN/geo, passive DNS, reputation; URLs → URL reputation/sandbox history.

python scripts/analyst.py plan iocs.json

Step 3: Score confidence

Combine source agreement, age, and prevalence into a confidence score; a single hit on one feed is weaker than corroboration across independent sources.

Step 4: Annotate and pivot

Attach context (first seen, related infrastructure, family) and pivot on strong links (shared registrant, hosting, certificate) to expand the picture.

Step 5: Record provenance

Note which source provided each piece of context and when, so the enrichment is auditable and re-checkable.

Validation

  • Each indicator is routed to type-appropriate, passive sources.
  • Confidence reflects corroboration across independent sources, not a single feed.
  • Every enrichment carries source and timestamp provenance.

Read the full file on GitHub · 98 lines

Files

What ships with it

3 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 12d ago First seen · 98 lines · 75 tokens per session scan A 327a3c2b9c09

Subscribe to this mod's changes

enriching-iocs-with-threat-intel-sources is a skill published in the GitHub repository meltedinhex/analyst-ai-pack (22 stars, last pushed 2mo ago), licensed Apache-2.0. It adds 75 tokens to every session and 741 once invoked, about $0.0004 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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