PROOF OF CONCEPT

Proof & Scan Results

See XLL Builder in action and verify our FUD claims with real scan results.

XLL Builder - Full Tutorial

Watch the full 9-minute walkthrough to see every feature and learn how to generate FUD .XLL payloads.

Video Tutorials

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Local Mode 01:11
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Kleenscan Local File 02:16
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Local File Run (with Windows Defender) 03:05
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Web Stager Mode 04:17
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Kleenscan Web Stager File 06:04
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Web Stager & Memory Execution (Win Def) 06:45
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Local & Web Stager Run (Eset Smart Security) 07:26
VERIFICATION

Scan Results

Real-time detection rates from major antivirus engines.

FUD
January 2026
0 /36

Detection Rate (Kleenscan)

View Full Report
File Type XLL Add-in
Architecture x64
Encryption AES-256
Syscalls Hell's Gate

Antivirus Engines

✓ Windows Defender
✓ Kaspersky
✓ ESET-NOD32
✓ Bitdefender
✓ Avast
✓ AVG
✓ Malwarebytes
✓ McAfee
✓ Norton
✓ Sophos
✓ Trend Micro
✓ CrowdStrike

+ 24 more engines passed

⚠️ Detection rates may vary over time as AV vendors update their signatures. We provide regular updates to maintain FUD status.

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