CVE-2025-29824-Exploit

🚨 CVE-2025-29824 Exploit: PipeMagic Ransomware Chain

📌 Critical Vulnerability Overview

Privilege Escalation Flaw in Windows CLFS → SYSTEM Privilege Hijack
Exploited in Active Ransomware Attacks by Storm-2460 Threat Group

🖥️ Affected Systems

Expand System List

🧩 Exploit Chain Workflow

graph LR A[Initial Access] -->|certutil| B[Malicious MSBuild Payload] B --> C[PipeMagic Trojan] C -->|CVE-2025-29824| D[CLFS Kernel Exploit] D -->|RtlSetAllBits| E[Token Overwrite 0xFFFFFFFF] E --> F[SYSTEM Privileges] F --> G[LSASS Dumping] G --> H[Ransomware Deployment]

1. Initial Access
   Unknown vector → Compromised sites via certutil

2. PipeMagic Loader
   Modular trojan (active since 2022)

3. Kernel Exploit
   // Core vulnerability logic CLFS_Trigger_Corruption(); RtlSetAllBits(exploit_process_token, 0xFFFFFFFF);

4. Post-Exploitation
   • LSASS memory dump → Credential theft

   • File encryption with .random_extension

   • RansomEXX TOR note deployment

🌩️ Attack Attribution & History

CVE Year Ransomware Vector

CVE-2023-28252 2023 Nokoyawa PipeMagic → CLFS

CVE-2025-24983 2025 Unknown PipeMagic → Win32K

CVE-2025-29824 2025 RansomEXX PipeMagic → CLFS

Targeted Industries:
🏢 US IT/Real Estate • 🇻🇪 Venezuela Finance • 🇪🇸 Spanish Software • 🇸🇦 Saudi Retail

🛡️ Mitigation Requirements

• Patch Applied: MS April 2025 Patch Tuesday ! Detection Priority: certutil -> MSBuild activity

• Block Pattern: RtlSetAllBits token manipulation

Win11 24H2 Immunity:
NtQuerySystemInformation restricted to SeDebugPrivilege accounts

⚠️ Legal & Ethical Warning

This exploit is published FOR RESEARCH PURPOSES ONLY.

Active ransomware deployment confirmed in:

https://thehackernews.com/2025/04/pipemagic-trojan-exploits-windows-zero.html

!https://img.shields.io/badge/RISK-CRITICAL-red !https://img.shields.io/badge/PATCHED-April_2025-green !https://img.shields.io/badge/SCOPE-Win7→Server_2025-orange