ColdWer - Cobalt Strike BOF to freeze EDR/AV processes and d

项目说明

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<img src=" alt="ColdWer"/>
<br>
<i>A cold war on your endpoint.</i>
</p>

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<a href=" src=" alt="Stars"></a>
<a href=" src=" alt="Forks"></a>
<a href=" src=" alt="License"></a>
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🥶 ColdWer

ColdWer le WerFaultSecure.exe PPL bypass to freeze EDR/A and dump LSASS memory on modern Windows systems.

> *Freeze your EDR/A what you need. Stay cold.*

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👤 Author

Sh3llf1r3 (@0xsh3llf1r3)

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🙏 Credits

This project builds upon research by TwoSe ():

| Project | Description |
|---------|-------------|
| EDR-Freeze | Original EDR freeze technique |
| WSASS | LSASS dump |

All credit for the underlying techniques goes to TwoSe.

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🔥 Features

| Feature | Description |
|---------|-------------|
| ❄️ Freeze | Put EDR/A into a coma state |
| 🔓 Dump | Extract LSASS memory bypassing PPL |
| 🛡️ PPL Bypass | Le WerFaultSecure.exe at WinTcb level |
| ⚡ Fast | Inline BOF execution |
| 🎯 Manual Control | You decide when to freeze and unfreeze |

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🚀 Getting Started

📋 Prerequisites

<br>

💾 Installation

1. Clone the repository:

2. Load the aggressor script in Cobalt Strike:
- Go to Cobalt Strike → Script Manager
- Click Load
- Select cw/coldwer.cna

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📦 Building from Source

<br>

📥 Quick Download

1. Go to Releases
2. Download coldwer.o and coldwer.cna
3. Place both in the same folder
4. Load coldwer.cna in Cobalt Strike

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🖥️ Usage

❄️ Freeze EDR/AV

🔓 Dump LSASS

🔧 After Download

Change the file header to restore the minidump format:

| Original (PNG) | Change to (MDMP) |
|----------------|------------------|
| 89 50 4E 47 | 4D 44 4D 50 |

Restore Header Commands:

| Method | Command |
|--------|---------|
| Python | open('lsass.dmp','r+b').write(b'MDMP') |
| Bash | printf '\x4d\x44\x4d\x50' \| dd of=lsass.dmp bs=1 count=4 con |
| PowerShell | $f=[IO.File]::Open("lsass.dmp","Open","Write");$f.Write([byte[]](0x4D,0x44,0x4D,0x50),0,4);$f.Close() |

Then parse with Mimikatz:

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📋 Commands

| Command | Description |
|---------|-------------|
| cw-freeze <PID> [Path] | Freeze process |
| cw-unfreeze | Unfreeze pre frozen process |
| cw-dump <PID> <Path> | Dump LSASS memory |

📝 Examples

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✅ Supported Targets

| Target | Status |
|--------|--------|
| Windows Defender (MsMpEng.exe) | ✅ Works |
| LSASS (lsass.exe) | ✅ Works |
| Other PPL processes | ✅ Works |

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⚠️ Limitations

Does NOT work against EDRs with kernel-mode self-protection:

| EDR | Status |
|-----|--------|
| Elastic Endpoint | ❌ Blocked |
| CrowdStrike Falcon | ❌ Blocked |
| SentinelOne | ❌ Blocked |
| Carbon Black | ❌ Blocked |

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⚙️ How It Works

🔑 Why Win8.1 WerFaultSecure?

| | Output |
|---------|--------|
| Windows 10/11 | Encrypted dump only |
| Windows 8.1 | Raw unencrypted dump |

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🔍 Troubleshooting

| Error | Cause | Solution |
|-------|-------|----------|
| File not found | Invalid path | Check WerFaultSecure.exe path |
| Access denied | Low pri | Run as Administrator/SYSTEM |
| Invalid signature | Unsigned binary | Use properly signed WerFaultSecure.exe |
| Process does not exist | Wrong PID | PID with ps command |
| Target protected | Kernel protection | EDR has self-protection (not bypassable) |
| Already frozen | State stuck | Run cw-unfreeze first |

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⚖️ Disclaimer

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📜 License

MIT License - See LICENSE

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<p align="center">
<b>🥶 Stay Cold. Stay Quiet. 🥶</b>
<br><br>
⭐ Star this repo if you find it useful! ⭐
</p>

项目信息

开发语言：C

Star 数：145

技术要点

该项目属于红蓝攻防方向的开源资源，代码结构清晰，适合安全研究人员学习参考。项目围绕Cobalt Strike BOF to freeze EDR/AV processes and dump LSASS using WerFaultSecure.exe PPL bypass展开，提供了可运行的实现，对理解相关安全机制、工具原理与攻防技术具有较高的研究价值。

从技术实现角度看，此类项目的核心在于对底层原理的深入理解与工程化落地。开发者在研究过程中可以结合官方文档与社区讨论，梳理项目的初始化流程、核心模块职责与数据流转，逐步掌握其中的技术细节与设计思路。

使用与学习建议

1. 下载源码压缩包，解压到本地环境。

2. 根据项目类型准备对应的运行环境与依赖。

3. 按照 README 中的步骤完成配置与部署。

4. 在隔离的测试环境中运行验证，避免影响生产系统。

免责声明

本资源来源于开源社区，仅供安全研究、技术学习与合法授权范围内的攻防演练使用，请勿用于任何非法或侵害他人权益的用途。使用本项目产生的一切后果由使用者自行承担。