analyzing-cobaltstrike-malleable-c2-profiles

analyzing-cobaltstrike-malleable-c2-profiles is a skill for Claude Code from killvxk/cybersecurity-skills-zh. It costs 59 tokens per session (673 once invoked), scanned A, original, Apache-2.0.

A cybersecurity analysis workflow for reading Cobalt Strike Malleable C2 profiles, which control how an attack tool's Beacon traffic is disguised and how it behaves. It extracts communication and process-injection details and can produce network-detection rules.

In plain words
What is it for?
Use it to extract URLs, headers, user agents, timing, DNS, and injection settings, then create JSON reports and Suricata or Snort detection signatures.
Why use it?
It turns a configuration file into indicators that defenders can investigate and use to detect suspicious traffic or behavior. It also supports comparing profiles with known threat-actor configurations.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin.

Part of the cybersecurity-skills-zh plugin — 58 skills shipped together

Good fit Use it to extract URLs, headers, user agents, timing, DNS, and injection settings, then create JSON reports and Suricata or Snort detection signatures.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/killvxk/cybersecurity-skills-zh/analyzing-cobaltstrike-malleable-c2-profiles
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 killvxk/cybersecurity-skills-zh --skill analyzing-cobaltstrike-malleable-c2-profiles
Clone the repo
git clone --depth 1 https://github.com/killvxk/cybersecurity-skills-zh

Made for: Claude Code.

Or install cybersecurity-skills-zh, the plugin that ships this one along with the rest of its 58 skills.

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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<a href="https://agentmods.dev/skills/killvxk/cybersecurity-skills-zh/analyzing-cobaltstrike-malleable-c2-profiles"><img src="https://agentmods.dev/badge/skills/killvxk/cybersecurity-skills-zh/analyzing-cobaltstrike-malleable-c2-profiles.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 59 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 673 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 $0.00059 $0.00673
Opus 5 $0.00030 $0.00336
Sonnet 5 $0.00012 $0.00135
Haiku 4.5 $0.00006 $0.00067

Measured 12d ago against content hash 20a4ebbd6a0d, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

analyzing-cobaltstrike-malleable-c2-profiles 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/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.

skills/analyzing-cobaltstrike-malleable-c2-profiles/SKILL.md · 41 lines

What it actually says

分析 CobaltStrike Malleable C2 配置文件

概述

Cobalt Strike Malleable C2 配置文件是领域专用语言脚本,用于定制 Beacon 与团队服务器的通信方式,包括 HTTP 请求/响应转换、休眠间隔、抖动值、User Agent、URI 路径和进程注入行为。威胁行为者使用 Malleable C2 配置文件将 C2 流量伪装成合法服务(Amazon、Google、Slack)。分析这些配置文件可揭示用于检测的网络指标:URI 模式、HTTP 请求头、POST/GET 转换、DNS 设置和进程注入技术。dissect.cobaltstrike 库可解析配置文件并从 beacon 载荷中提取配置,而 pyMalleableC2 使用 Lark 语法提供基于 AST 的解析,用于程序化配置文件操作和验证。

前置条件

  • Python 3.9+,安装 dissect.cobaltstrike 和/或 pyMalleableC2
  • 示例 Malleable C2 配置文件(可从公开仓库获取)
  • 了解 HTTP 协议和 Cobalt Strike beacon 通信模型
  • 网络监控工具(Suricata/Snort)用于部署签名
  • PCAP 分析工具用于流量验证

工作流程

  1. 安装库:pip install dissect.cobaltstrikepip install pyMalleableC2
  2. 使用 C2Profile.from_path("profile.profile") 解析配置文件
  3. 提取 HTTP GET/POST 块配置(URI、请求头、参数)
  4. 识别 User Agent 字符串和伪装目标
  5. 提取休眠时间、抖动百分比和 DNS beacon 设置
  6. 分析进程注入设置(注入目标进程、分配技术)
  7. 从提取的网络指标生成 Suricata/Snort 签名
  8. 将配置文件与已知威胁行为者配置文件集合对比
  9. 提取分段 URI 和载荷投递机制
  10. 生成包含 IOC 和推荐网络签名的检测报告

输出格式

JSON 报告,包含提取的 C2 URI、HTTP 请求头、User Agent、休眠/抖动设置、进程注入配置、注入目标进程路径、DNS 设置和生成的 Suricata 兼容检测规则。

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 · 41 lines · 59 tokens per session scan A 20a4ebbd6a0d

Subscribe to this mod's changes

analyzing-cobaltstrike-malleable-c2-profiles is a skill published in the GitHub repository killvxk/cybersecurity-skills-zh (44 stars, last pushed 4mo ago), licensed Apache-2.0. It adds 59 tokens to every session and 673 once invoked, about $0.0003 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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Parse and analyze Cobalt Strike Malleable C2 profiles with dissect.cobaltstrike (profiles and beacon-payload configs) and pyMalleableC2 (AST parsing) to extract HTTP/DNS transforms, URIs, headers, sleep/jitter, and injection behavior, then generate network detection signatures. Use when reverse-engineering a captured…

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