A proof-of-concept tool that generates Excel BIFF8 files with embedded 4.0 macros programmatically without requiring Microsoft Excel installation.
Checked October 2026.
XlsGen is a proof-of-concept tool designed to generate Excel BIFF8 files with embedded 4.0 macros without requiring Microsoft Excel to be installed.
The tool enables programmatic creation of xls files that contain macro functionality, bypassing the need for the actual Excel application during file generation.
This capability allows security researchers and penetration testers to create Excel files with embedded macros for testing purposes, social engineering simulations, or malware analysis scenarios.
The tool operates by directly manipulating the BIFF8 file format structure to embed macro code into the generated Excel files, providing a method to create macro-enabled spreadsheets through code rather than through the Excel interface.
No core features are listed for this product yet, so check the vendor's documentation for the full feature list.
No integrations are listed for this product yet. Check the vendor's documentation, or ask the vendor which integrations and APIs it supports.
Common questions about XlsGen: features, pricing and alternatives.
XlsGen is a product in the Red-Team & Adversary Emulation category. It covers Red Team, Proof of Concept and Payload Generation.
XlsGen is free. Download and setup instructions are at https://github.com/aaaddress1/xlsGen/.
Alternatives to XlsGen listed on CybersecTools:
Compare all XlsGen alternatives at https://cybersectools.com/alternatives/xlsgen
XlsGen is available as on-premises software. It is listed for startups, small businesses, mid-market companies and enterprises. It is free.
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