The Ultimate Tool for
Native Excel Payloads
Build undetectable XLL add-ins with in-memory execution, AES-256 encryption, and advanced evasion techniques. Written in 100% Rust for maximum performance.
Enterprise-Grade Features
Built with cutting-edge technology to deliver unmatched performance and reliability.
Memory Execution
Execute payloads directly from memory using our advanced reflective loader. No disk writes, no traces.
- Reflective DLL injection
- PE header manipulation
- Import reconstruction
Advanced Evasion
Bypass modern security solutions with Hell's Gate syscalls and automatic AMSI/ETW patching.
- Direct syscalls (Hell's Gate)
- AMSI & ETW bypass
- Anti-VM detection
Military Encryption
Protect your payloads with AES-256 encryption and runtime decryption for maximum security.
- AES-256-GCM encryption
- Runtime decryption
- Key derivation (PBKDF2)
Web Stager
Host payloads remotely with secure TLS 1.3 download and in-memory execution capabilities.
- Remote payload hosting
- TLS 1.3 encryption
- Proxy support
Zero Dependencies
100% Rust implementation with no external dependencies. Runs on any Windows 10+ machine.
- No .NET required
- No C runtime
- Minimal footprint
Process Injection
Choose from multiple injection targets including svchost, notepad, and custom processes.
- Multiple target options
- Process hollowing
- Thread hijacking
Simple 3-Step Process
From executable to undetectable XLL in seconds.
Select Your Payload
Choose your compiled executable or provide a remote URL for web stager mode.
Configure Options
Enable encryption, evasion techniques, persistence, and other advanced features.
Build & Deploy
Generate your XLL add-in ready for deployment. One click, instant results.
Choose Your Plan
Flexible licensing options for individuals and teams.
Single Build
1 XLL build - one time
- ✓ 1 XLL build
- ✓ Local & Web stager mode
- ✓ x64 & x86 support
- ✓ AES-256 encryption
- ✓ Advanced evasion
- ✓ Direct syscalls
- ✓ Anti-VM / Anti-Sandbox
- ✓ Telegram support
Weekly License
7 days - Unlimited builds
- ✓ Unlimited builds
- ✓ Local & Web stager mode
- ✓ x64 & x86 support
- ✓ AES-256 encryption
- ✓ Advanced evasion
- ✓ Direct syscalls
- ✓ Anti-VM / Anti-Sandbox
- ✓ Priority support
Monthly License
30 days - Unlimited builds
- ✓ Unlimited builds
- ✓ Local & Web stager mode
- ✓ x64 & x86 support
- ✓ AES-256 encryption
- ✓ Advanced evasion
- ✓ Direct syscalls
- ✓ Anti-VM / Anti-Sandbox
- ✓ Priority support
Frequently Asked Questions
XLL is a native Excel add-in format that runs compiled code directly within the Excel process. Unlike VBA macros, XLL files execute native machine code, providing better performance and more capabilities.
Our tool generates FUD (Fully Undetectable) outputs using advanced techniques including polymorphic code, string encryption, and direct syscalls. Detection rates are typically 0/65 on VirusTotal at release.
The builder runs on Windows 10/11 (64-bit). Generated XLL files work with Microsoft Excel 2013, 2016, 2019, 2021, and Microsoft 365 on Windows. Both x64 and x86 Office architectures are supported.
Licenses are subscription-based and tied to your hardware. Upon purchase, you'll receive a license key that activates the software. The license includes all updates during your subscription period.
Due to the nature of digital products, all sales are final. We encourage you to review the features and documentation before purchasing. Our support team is available to answer any questions prior to your purchase.
We accept cryptocurrency (BTC, LTC, ETH) for maximum privacy. All transactions are encrypted and confidential.
Ready to Get Started?
Join thousands of security professionals using XLL Builder for their operations.