InvalidSign
InvalidSign is a security research tool that bypasses endpoint solutions by obtaining valid signed files with different hashes to evade signature-based detection mechanisms.
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Free6
InvalidSign
InvalidSign is a security research tool that bypasses endpoint solutions by obtaining valid signed files with different hashes to evade signature-based detection mechanisms.
Data verified May 2026
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InvalidSign is a security research tool designed to bypass endpoint detection and response (EDR) solutions that block execution of known malicious signed applications. The tool works by obtaining valid signed files with different hash values, effectively circumventing signature-based detection mechanisms that rely on file hashes to identify and block malicious executables. InvalidSign demonstrates this bypass technique through analysis of legitimate system files like cmd.exe and generates test files to validate the evasion method. The tool focuses on exploiting the gap between signature validation and hash-based detection, allowing researchers to understand how signed malware can evade certain security controls. This research tool helps security professionals understand the limitations of hash-based detection systems and the potential for abuse of legitimate code signing certificates.
InvalidSign FAQ
Common questions about InvalidSign including features, pricing, alternatives, and user reviews.
InvalidSign is InvalidSign is a security research tool that bypasses endpoint solutions by obtaining valid signed files with different hashes to evade signature-based detection mechanisms. It is a Security Operations solution designed to help security teams with Red Team, Security Research, Evasion.
InvalidSign is a free Security Operations tool. This makes it accessible for organizations of all sizes, from startups to enterprises. Visit https://github.com/vysec/Windows-SignedBinary/ for download and installation instructions.
Popular alternatives to InvalidSign include:
1.WebDAV Covert Channel - A covert channel technique that uses WebDAV protocol features to deliver malicious payloads and establish C2 communication while bypassing security controls. (Free)
2.Core Security Outflank Security Tooling - Red team toolkit for EDR evasion, initial access, and post-exploitation. (Commercial)
3.Havoc Framework - Open-source C2 framework for red team ops and adversary simulation. (Free)
4.EvilClippy - EvilClippy is a cross-platform tool that creates malicious MS Office documents with hidden VBA macros and evasion techniques for penetration testing and red team operations. (Free)
5.Macro_Pack - Macro_Pack automates the generation and obfuscation of Office documents and scripts for penetration testing and security assessments. (Free)
Compare these tools and more at https://cybersectools.com/categories/security-operations
InvalidSign is for security teams and organizations that need Red Team, Security Research, Evasion, Signature, Bypass. It's particularly suitable for small to medium-sized teams looking for cost-effective solutions. Other Security Operations tools can be found at https://cybersectools.com/categories/security-operations
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