Darkweb Collection

Dark Web Collection

A practical, defender-oriented methodology for collecting cyber threat intelligence from underground forums, marketplaces, and Telegram channels. The skill assumes you are a defensive analyst, not a covert operator, and recommends a vendor-first posture with self-hosted DIY collection documented as a fallback.

This SKILL.md is the entry point. The substantive material lives in references/ and scripts/:

• references/forums.md — 35+ sourced underground forums across 8 categories
• references/telegram-channels.md — 30+ sourced Telegram channels across 6 categories
• references/access-methods.md — vendor matrix + DIY playbook
• references/opsec.md — handler-side OPSEC primer
• references/passive-monitoring.md — selector strategy and tooling
• references/telegram-setup.md — step-by-step setup for telegram_monitor.py (api_id, burner, session file)
• scripts/onion_search.py — clearnet search of onion indexers (Ahmia, dark.fail, IntelligenceX)
• scripts/telegram_monitor.py — read-only Telethon channel monitor (requires --i-understand-opsec for live ops)
• scripts/keyword_match.py — local regex/keyword scanner over collected JSONL

Scope and explicit exclusions

In scope. Cybercrime-focused collection: ransomware leak sites and group communications, initial access broker (IAB) markets, infostealer log shops, malware and exploit forums, carding and financial-fraud platforms, breach and data-leak forums, hacktivist coordination channels (where defensible cyber TTPs are documented), and lightly-touched nation-state-cyber-adjacent activity (e.g., GRU-nexus hacktivist fronts, IRGC-aligned cyber operations).

Explicitly out of scope. This skill does not list, link, or guide access to:

• Child sexual abuse material (CSAM) — discovery is mandatory-reportable in most jurisdictions; report to NCMEC (US), IWF (UK), Project Arachnid (Canada), or national equivalent and stop further investigation.
• Terrorism-glorifying or terrorism-instructional content — refer to national counter-terrorism units and to specialist platforms (GIFCT, Tech Against Terrorism).
• Violent-extremist or live-violence material — refer to law enforcement immediately.
• Personal-physical-safety threats against named individuals — refer to law enforcement and physical-security teams.

If you encounter any of the above incidentally during cybercrime collection, log only the URL/identifier, do not screenshot or further analyse, route to the appropriate authority, and rotate analysts off the source if exposure was sustained. See references/opsec.md for the mental-health framing.

Recommended posture: vendor-first

Recommend commercial CTI vendors (KELA, Flashpoint, Intel471, DarkOwl Vision, Recorded Future, Cybersixgill / Searchlight, Webz.io, Cybersixgill, SOCRadar, Hudson Rock for infostealer-specifics) as the default access path. They operate at scale across forums, languages, and identity tiers a defensive team cannot match; they handle persona maintenance, vetting, language coverage, and legal cover; and they provide audit trails that hold up in regulatory or litigation contexts.

Self-hosted DIY (Tails/Whonix + Tor Browser + Telethon + sockpuppets) is documented as a fallback for budget-constrained teams or for narrow, time-bounded targeted collection where vendor onboarding cost would exceed analyst-hours. The full DIY playbook is in references/access-methods.md.

This skill itself never visits a .onion address. The bundled scripts/onion_search.py resolves current onion mirrors against clearnet indexers; scripts/telegram_monitor.py reads channels your account has already joined; scripts/keyword_match.py scans the resulting text. Tor browsing, Tails, sockpuppet maintenance, and any active engagement are the analyst's responsibility, performed off the host running Claude Code.

Collection workflow

A six-step flow you should drive when asked to "set up dark-web collection" or "monitor for X on the dark web":

1. Define PIRs and selectors. What do you actually need to know? Translate into selector families per passive-monitoring.md — brand strings, identity selectors, email/domain patterns, network selectors, technical artefacts. Compose; never use a bare common name.
2. Pick the access tier. Vendor (recommended), surface-web mirrors / /lookup-ransomwarelive, or DIY. Choose per the matrix in access-methods.md.
3. Collect. Configure vendor portal selectors; or run the bundled scripts under appropriate OPSEC; or pull surface-web indexer/leak-site data on cadence (see the cadence table in passive-monitoring.md).
4. Deduplicate and enrich. Pivot from raw hits via /lookup-misp, /lookup-virustotal, /lookup-shodan, /lookup-greynoise, /lookup-abuseipdb, /lookup-urlscan, /lookup-otx, /lookup-censys, /lookup-ransomwarelive. The keyword_match.py JSONL output is designed to feed cleanly into these.
5. Score the source. Apply /score-source (Admiralty source-reliability + information-credibility) to every artefact before it goes into a finished product. The source-rating table at the bottom of this file is the starting point.
6. Report. Apply /apply-tlp for handling, /confidence-language for analytical claims, /likelihood-language for forecasts. Hand off to /intelligence-writing or /threat-actor-profiling as appropriate.

What to monitor

Short orientation per source type. Detail in the linked references.

Ransomware leak sites

Most groups maintain Tor leak sites; many also publish to Telegram. Monitor for new victim claims, countdowns, sample data, group operational announcements, affiliate recruitment posts. The bundled /lookup-ransomwarelive skill (free PRO tier, ~3000 calls/day) covers victim claims, group profiles, IOCs, YARA, and ransom notes for most active groups. Cross-reference with the Russian-speaking elite forums (forums.md § 1) for affiliate chatter.

Underground forums

35+ forums catalogued in forums.md across Russian-speaking elite, English-speaking general / data-leak, carding and fraud, infostealer log marketplaces, exploit / 0day brokers, hacktivist coordination, regional (Chinese, Spanish/LATAM, Persian, Turkish), and doxing/cybercrime overlap. Monitor for IAB listings naming your sector or geography, breach announcements, exploit sales for tech in your stack, malware development discussions, and reputation/vouching dynamics that indicate actor migrations.

Telegram channels

30+ channels catalogued in telegram-channels.md across ransomware group officials, IAB storefronts, infostealer log shops, hacktivist collectives (pro-Russia, pro-Ukraine, pro-Palestine/MENA, mixed-attribution), breach aggregators, and defender-run news aggregators (CyberKnow, FalconFeedsio, vx-underground). Monitor with scripts/telegram_monitor.py. Defender-run aggregators are the lowest-effort safe second-tier.

Paste sites

Pastebin and modern equivalents (DontPad, JustPasteIt, Ghostbin successors). Combo lists, leaked credentials, code-leak snippets, manifestos, IOC dumps from researchers. Vendor-mediated coverage is more reliable than DIY; for DIY, pair keyword_match.py against bulk paste-site dumps.

Marketplaces

Treat Russianmarket, Brian's Club, B1ack's Stash, BidenCash-successors, Exodus Marketplace, and Hudson Rock-tracked stealer log shops as forum-equivalent for monitoring purposes (they are listed in forums.md § 3-4). Monitor for credentials matching your domain selectors and for sector-specific listings.

Breach and data-leak corpora

HIBP, IntelligenceX, Constella, Hudson Rock free tier. Pivot from a hit (executive email, internal hostname, source-code snippet) into incident response.

OPSEC summary (top rules)

Read opsec.md before any DIY collection. The condensed top ten:

1. Three identities, never one. Real you ↔ work you ↔ research persona. They never share an email, phone, browser, VM, writing sample, or timezone tell.
2. Dedicated hardware or VM. Never the daily driver. Full-disk encryption, snapshot rollback after each session.
3. Always Tor or research-only VPN. Never your home/office IP. Defence in depth: VPN → Tor for sensitive targets.
4. Never reuse a handle, profile photo, or sockpuppet narrative across personae.
5. Strip EXIF from every image. Never post any image that exists elsewhere on the internet (reverse-image search will deanon you).
6. Tor Browser default settings. "Safer" or "Safest" slider, no JS, no plugins, no logging into real accounts.
7. Burner number for Telegram. Treat the session file as credentials. Never auto-join channels — joining is a deliberate event from the Telegram client, not from automation.
8. Linguistic credibility. Russian elite forums catch machine-translation tells fast; use a native-speaker collaborator or stay lurking.
9. No purchases without legal sign-off. Buying access or data can constitute receiving stolen property, funding criminal enterprises, or breaching sanctions.
10. Mental health is load-bearing. Rotate analysts off dark-web duty every 6-12 months; provide clinical support; mandatory time off after incidental exposure to illegal-content material.

Source assessment (Admiralty starting points)

Combined with /score-source for the final rating per artefact:

Composition

This skill invokes / chains with:

• /score-source — apply Admiralty rating to every artefact before reporting
• /apply-tlp — handle classification before any sharing
• /confidence-language, /likelihood-language — analytical language for the resulting product
• /lookup-ransomwarelive — primary path for ransomware victim/group monitoring; uses the bundled ransomware.live PRO API
• /lookup-misp — pivot from a hit into MISP (and back) for IOC enrichment and sharing
• /lookup-virustotal, /lookup-shodan, /lookup-greynoise, /lookup-abuseipdb, /lookup-urlscan, /lookup-otx, /lookup-censys — IOC enrichment for selectors that match
• /intelligence-writing — for the finished product
• /ransomware-ecosystem, /initial-access-brokers, /infostealers, /threat-actor-profiling — downstream analytical knowledge cells the collection feeds into

Scripts

All three live in scripts/. Stdlib-only except telegram_monitor.py (Telethon). All support --dry-run to preview without making network calls. All emit JSONL.

onion_search.py — clearnet search of onion indexers

# Status: list backends and auth state
python3 scripts/onion_search.py --status

# Search for current LockBit mirrors via Ahmia + dark.fail
python3 scripts/onion_search.py --query "lockbit" --backends ahmia,darkfail --limit 25

# Add IntelligenceX backend (requires INTELX_API_KEY env var; free tier ~50 queries/day)
INTELX_API_KEY=... python3 scripts/onion_search.py --query "breachforums" --backends ahmia,intelx

You do not need Tor to run this script — it queries clearnet indexers — but you do need Tor (Tails / Whonix / torsocks) to actually visit any .onion URL it returns. Onion URLs returned may be hijacked phishing mirrors; cross-check via PGP-signed mirror lists (Tor Project, dark.fail's signed list).

telegram_monitor.py — read-only Telethon channel monitor

First-time setup (api_id/api_hash, burner number, session file, dedicated venv for telethon): walk through references/telegram-setup.md. Do not skip the burner-number step. Telethon must be installed into a dedicated venv (~/.cache/cti-skills/venv is the convention used in the setup guide); pip install --user is fragile on systems with multiple python3 interpreters.

# Offline self-test — no Telegram, no network, no telethon needed.
# Works with the system python3 because the script imports telethon lazily.
python3 scripts/telegram_monitor.py --self-test

# Validate config without connecting (still no telethon required)
python3 scripts/telegram_monitor.py --dry-run \
  --channels-file channels.txt --selectors-file selectors.txt

# Pull last 200 messages from each channel — uses the venv interpreter.
~/.cache/cti-skills/venv/bin/python3 scripts/telegram_monitor.py \
  --i-understand-opsec --once --history 200 \
  --channels-file channels.txt --selectors-file selectors.txt --out hits.jsonl

# Watch mode: stream new messages forever (use behind systemd / supervisor)
~/.cache/cti-skills/venv/bin/python3 scripts/telegram_monitor.py \
  --i-understand-opsec --watch \
  --channels-file channels.txt --selectors-file selectors.txt --out hits.jsonl

Env vars (TELEGRAM_API_ID, TELEGRAM_API_HASH, TELEGRAM_SESSION, TELEGRAM_PHONE) are read from .claude/settings.local.json's env block when invoked from a Claude Code session, or from the surrounding shell when invoked directly.

Guardrails enforced by the script:

• Live operations (--once / --watch) refuse without --i-understand-opsec and exit 5 with a printed checklist.
• Pre-connect 5-second banner with the channel list and abort window (suppress only with --skip-pre-connect-banner for vetted unattended runs).
• --self-test exercises the parser and matcher against a synthetic fixture and exits PASS/FAIL — no Telegram, no network, no credentials.

Strictly read-only: never sends messages, never auto-joins channels (you must have manually joined every target channel from your Telegram client first; the script will skip and warn on any handle the session is not a member of). Light dep: pip install telethon. The session file is equivalent to your Telegram credentials — store on encrypted disk, never check in.

keyword_match.py — local regex/keyword scanner

# Validate selectors and file count without scanning
python3 scripts/keyword_match.py --dry-run --input ./collected --selectors-file selectors.txt

# Scan a directory of JSONL hits against selectors with 200-char context
python3 scripts/keyword_match.py --input ./collected --selectors-file selectors.txt --context 200

# Scan a single file with deduplication off
python3 scripts/keyword_match.py --input msgs.jsonl --selectors-file selectors.txt --dedupe-by none

Selector file format (shared with telegram_monitor.py): one selector per line, # comments allowed, optional prefix literal: (default), regex:, domain: (word-boundary anchored), or email: (word-boundary anchored on a tail). Pure stdlib, fast, safe to run from any host (no network).

Legal and ethical

Conduct collection within applicable law (jurisdiction varies — EU defenders should run retention practices by counsel against GDPR Art. 6 / Art. 9 even for "publicly available" data). Do not participate in criminal activity to acquire intelligence. Do not purchase access, data, or services without explicit legal sign-off and (often) law-enforcement coordination. Mandatory-reportable content (CSAM in particular) must be reported to the appropriate authority and investigation halted; that work belongs to law enforcement and trained NGO units, not defensive CTI teams. Document retention periods, access controls, and disposal procedures with counsel; default to 90-365 days for raw collection.