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Security48k · #4365

threat-hunting

Helps find and investigate suspicious activities in systems. It creates ways to detect attacks and verifies if detections work correctly.

What it does

This tool helps search for suspicious activities on computer systems. It creates rules to identify unusual behaviors and checks if these rules work correctly.

When to use it

  • ✓When you want to actively hunt for signs of an intrusion.
  • ✓When creating or validating threat detection rules.
  • ✓To tune alerts and analyze false positives.

Example of what to ask your AI

“Hunt for signs that an attacker is using common system tools to move between 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/sickn33/agentic-awesome-skills/blob/main/plugins/agentic-awesome-skills-claude/skills/threat-hunting/SKILL.md

Ready-to-paste message

Use this skill to help me: https://github.com/sickn33/agentic-awesome-skills/blob/main/plugins/agentic-awesome-skills-claude/skills/threat-hunting/SKILL.md Read the SKILL.md file at that link and follow its instructions for my task.
How it works

It works by defining a hypothesis (an idea of what to look for), then searching data for evidence, and finally creating or validating rules to detect these activities.

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 sickn33/agentic-awesome-skills --skill threat-hunting

Or download just the file:

curl -L https://raw.githubusercontent.com/sickn33/agentic-awesome-skills/main/plugins/agentic-awesome-skills-claude/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

When to Use

  • Proactively hunting for adversary activity in telemetry.
  • Writing or validating detection rules mapped to ATT&CK techniques.

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?

Limitations

  • Hypothesis quality bounds results; weak telemetry yields weak hunts.
  • Rule tuning is continuous; expect false positives initially.

Adapted from zhaoxuya520/reverse-skill (MIT).

FAQ

What are detection rules?

They are like alarms that go off when suspicious behavior is detected on a system.

What is 'threat hunting'?

'Threat hunting' is the process of actively searching for threats that might have bypassed security systems.

Can I use this on any system?

It's important to only use this in environments where you have permission to test, to avoid causing issues.

Details

Original description by the author

Blue-team threat hunting: detection engineering with Sigma/YARA, SIEM query design, and validation of incident detections against known technique patterns.

repo: sickn33/agentic-awesome-skills

Popularity

GitHub stars
48k
Ranking position
#4365
License
MIT
Updated
10/15/2026

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