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Security42k · #4788

threat-hunting

Empowers your agent to search for malicious activities on networks. It helps create detection systems and validate if threats are being identified correctly.

What it does

Helps find suspicious activities on computer systems, like a digital detective. It creates rules to identify attacks and checks if detections are working.

When to use it

  • ✓When you suspect an attacker is active on your network.
  • ✓To create alerts that warn about malicious activities.
  • ✓To verify if security alerts are working correctly.

Example of what to ask your AI

“Look for unusual activity from administrator accounts across multiple computers.”

Want more? Open the sections below.

How to use

The easiest way: copy the message below and paste it into Claude, ChatGPT, Cursor or any AI. It reads the skill and follows the instructions.

Skill link

https://github.com/zhaoxuya520/reverse-skill/blob/main/skills/threat-hunting/SKILL.md

Ready-to-paste message

Use this skill to help me: https://github.com/zhaoxuya520/reverse-skill/blob/main/skills/threat-hunting/SKILL.md Read the SKILL.md file at that link and follow its instructions for my task.
How it works

You describe what you're looking for (a hypothesis), and the AI helps create commands to search for it in system logs. Then, it helps turn these searches into automatic rules.

Installation

Easiest way: copy the skill link and paste it into Claude, ChatGPT or Cursor asking it to follow the instructions.

In the terminal (Claude Code, Codex, Cursor), in your project folder:

npx skills add zhaoxuya520/reverse-skill --skill threat-hunting

Or download just the file:

curl -L https://raw.githubusercontent.com/zhaoxuya520/reverse-skill/main/skills/threat-hunting/SKILL.md -o SKILL.md
Technical content (original SKILL.md)

Original text by the author, straight from GitHub.

Threat Hunting & Detection Engineering

ACTION REQUIRED(读完后立刻执行)

  1. NOW: 确认蓝队/狩猎授权与数据源范围(SIEM、EDR 导出)
  2. NOW: 明确假说(hypothesis)再查数,避免无脑刷告警
  3. NEXT: 工具与数据接入方式
  4. ACT: 假说 → 查询 → 验证 → 规则化

适用场景

  • 威胁狩猎(hypothesis-driven)
  • Sigma / YARA 检测工程
  • 告警调优、误报分析
  • 与 malware-analysis/:样本侧 IOC → 本 skill 落地检测
  • 与 digital-forensics/:案件伪影 → 横向狩猎

工作流

1. 建假说

例:攻击者用 living-off-the-land 做横向
→ 数据源:Sysmon 1/3/10、Windows Security 4624/4648
→ 成功标准:发现异常父进程或罕见账户日志源

2. 查询与堆叠

□ 基线:正常管理员行为时段与主机
□ 异常:新服务、编码 PowerShell、异常出站
□ 关联:同账号多主机短时登录

3. 规则化

# Sigma 骨架见 malware-analysis;本 skill 强调:
# - 误报面
# - 数据源字段映射
# - 响应 playbook 链接

4. 验证

□ 原子测试(Atomic Red Team)仅在授权实验室
□ 回放历史日志验证召回

工具链

工具 用途
Sigma CLI / sigmac 规则转换
YARA 文件/内存
SIEM(ELK/Splunk 等) 查询
osquery 端点狩猎
Atomic Red Team 检测验证(实验室)

参考

  • references/hunting-loop.md
  • ../malware-analysis/references/yara-sigma-rules.md
  • ../digital-forensics/

路由上下文

上游: MASTER R27
下游: 确认入侵 → forensics;恶意样本 → malware-analysis
MUST NOT: 在无授权生产环境跑攻击模拟

任务完成自检

  • 是否有明确假说与结论?
  • 规则是否注明误报与数据源?
  • Checklist?
FAQ

What is 'threat hunting'?

It's like being a detective to find digital threats that haven't been caught by security systems yet.

What are 'detection rules'?

These are instructions that tell the security system what to look for to identify an attack.

Can I use this on any computer?

No, you need permission and access to the correct data (like security logs) to use this tool.

Details

Original description by the author

Use for blue-team threat hunting, detection engineering with Sigma/YARA, SIEM query design, and incident detection validation.

repo: zhaoxuya520/reverse-skill

Popularity

GitHub stars
42k
Ranking position
#4788
License
MIT
Updated
9/22/2026

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