analyzing-ransomware-network-indicators

analyzing-ransomware-network-indicators is a skill for Claude Code, Codex from adriannoes/awesome-agentic-ai. It costs 45 tokens per session (728 once invoked), scanned A, original, MIT.

A procedure for finding network signs of ransomware, malicious software that encrypts files and may steal data. It uses Zeek connection logs and NetFlow records, which describe network connections and traffic flows.

In plain words
What is it for?
Use it to inspect connection timing, Tor exit-node contacts, large outbound transfers, suspicious DNS activity, and known ransomware command-and-control indicators.
Why use it?
It gives security analysts a structured way to spot ransomware activity before or during an incident. The indicators can reveal hidden command channels, data theft, suspicious DNS, and encryption-key traffic.

Skill for Claude CodeCodex

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

Good fit Use it to inspect connection timing, Tor exit-node contacts, large outbound transfers, suspicious DNS activity, and known ransomware command-and-control indicators.

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Install with agentmods
npx agentmods add skills/adriannoes/awesome-agentic-ai/analyzing-ransomware-network-indicators
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 adriannoes/awesome-agentic-ai --skill analyzing-ransomware-network-indicators
Clone the repo
git clone --depth 1 https://github.com/adriannoes/awesome-agentic-ai

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.

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README.md
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Your own site
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Your own site · 80×15
<a href="https://agentmods.dev/skills/adriannoes/awesome-agentic-ai/analyzing-ransomware-network-indicators"><img src="https://agentmods.dev/badge/skills/adriannoes/awesome-agentic-ai/analyzing-ransomware-network-indicators.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 45 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 728 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. Third-party audits
  • NVIDIA SkillSpector pass 7 Sept 2026
How audits are shown
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 $0.00045 $0.00728
Opus 5 $0.00023 $0.00364
Sonnet 5 $0.00009 $0.00146
Haiku 4.5 $0.00005 $0.00073

Measured 11d ago against content hash f7125b12ba48, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

analyzing-ransomware-network-indicators 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 11d ago.

The scan reads SKILL.md. This mod also ships 1 executable file (scripts/agent.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.

Origin

Copies of this mod

5 near-identical copies found in the catalogue:

cursor-claude-codex/skills/anthropic-cybersecurity-skills/skills/analyzing-ransomware-network-indicators/SKILL.md · 93 lines

What it actually says

Analyzing Ransomware Network Indicators

Overview

Before and during ransomware execution, adversaries establish C2 channels, exfiltrate data, and download encryption keys. This skill analyzes Zeek conn.log and NetFlow data to detect beaconing patterns (regular-interval callbacks), connections to known TOR exit nodes, large outbound data transfers, and suspicious DNS activity associated with ransomware families.

When to Use

  • When investigating security incidents that require analyzing ransomware network indicators
  • When building detection rules or threat hunting queries for this domain
  • When SOC analysts need structured procedures for this analysis type
  • When validating security monitoring coverage for related attack techniques

Prerequisites

  • Zeek conn.log files or NetFlow CSV/JSON exports
  • Python 3.8+ with standard library
  • TOR exit node list (fetched from Tor Project or threat intel feeds)
  • Optional: Known ransomware C2 IOC list

Steps

  1. Parse Connection Logs — Ingest Zeek conn.log (TSV) or NetFlow records into structured format
  2. Detect Beaconing Patterns — Calculate connection interval statistics (mean, stddev, coefficient of variation) to identify periodic callbacks
  3. Check TOR Exit Node Connections — Cross-reference destination IPs against current TOR exit node list
  4. Identify Data Exfiltration — Flag connections with unusually high outbound byte ratios to external IPs
  5. Analyze DNS Patterns — Detect DGA-like domain queries and high-entropy subdomains
  6. Score and Correlate — Apply composite risk scoring across all indicator types
  7. Generate Report — Produce structured report with timeline and MITRE ATT&CK mapping

Expected Output

  • JSON report with beaconing detections and interval statistics
  • TOR exit node connection alerts
  • Data exfiltration flow analysis
  • Composite ransomware risk score with MITRE mapping (T1071, T1573, T1041)
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. 11d ago First seen · 93 lines · 45 tokens per session scan A f7125b12ba48

Subscribe to this mod's changes

analyzing-ransomware-network-indicators is a skill published in the GitHub repository adriannoes/awesome-agentic-ai (57 stars, last pushed 13d ago), licensed MIT. It adds 45 tokens to every session and 728 once invoked, about $0.0002 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.

Related

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analyzing-ransomware-network-indicators

Identify ransomware network indicators including C2 beaconing patterns, TOR exit node connections, data exfiltration flows, and encryption key exchange via Zeek conn.log and NetFlow analysis.

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Identify ransomware network indicators including C2 beaconing patterns, TOR exit node connections, data exfiltration flows, and encryption key exchange via Zeek conn.log and NetFlow analysis.

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analyzing-ransomware-network-indicators

Identify ransomware network indicators including C2 beaconing patterns, TOR exit node connections, data exfiltration flows, and encryption key exchange via Zeek conn.log and NetFlow analysis.

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analyzing-ransomware-network-indicators

Identify ransomware-related network indicators, including C2 beaconing patterns, TOR exit node connections, data exfiltration flows, and encryption key exchange, by analyzing Zeek conn.log and NetFlow data. Use when threat hunting for active ransomware network activity or investigating suspected pre-encryption…

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analyzing-ransomware-network-indicators

Identify ransomware network indicators including C2 beaconing patterns, TOR exit node connections, data exfiltration flows, and encryption key exchange via Zeek conn.log and NetFlow analysis.

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