Open Source C Anti-Malware Software

YARA is a tool aimed at (but not limited to) helping malware researchers to identify and classify malware samples. With YARA you can create descriptions of malware families (or whatever you want to describe) based on textual or binary patterns. Each description, a.k.a rule, consists of a set of strings and a boolean expression which determines its logic. YARA is multi-platform, running on Windows, Linux and Mac OS X, and can be used through its command-line interface or from your own Python scripts with the yara-python extension. YARA-CI may be a useful addition to your toolbelt. This is GitHub application that provides continuous testing for your rules, helping you to identify common mistakes and false positives. If you plan to use YARA to scan compressed files (.zip, .tar, etc) you should take a look at yextend, a very helpful extension to YARA developed and open-sourced by Bayshore Networks.

Clam sentinel is a program that detects file system changes and automatically scans the files added or modified using ClamWin. Require the installation of ClamWin. For Microsoft Windows 98/98SE/Me/2000/XP/Vista, Windows 7 and Windows 8.1.

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The FULL STACK COMPUTER SCANNER is a proprietary FREEWARE Windows system diagnostics tool designed to help users assess a computer’s overall security posture. The application performs read-only analysis across 50 system sectors, including hardware, firmware, boot, OS configuration, software, files, browser extensions, and network-related indicators. The scanner does not remove, block, quarantine, or modify anything. This is the initial 2026 public release of a transparency-first diagnostic tool focused on visibility, awareness, and education, rather than automated remediation. The project includes the application, full documentation, architecture disclosure, and detailed explanations of each scan area. Proprietary Freeware (not open source). See Freeware License 2026.txt for full terms. Optional independent written diagnostic reports are available for users who want professional interpretation of results. KCJ Tech Solutions Email Contact: computerscannerapp@gmail.com

readpe (formerly known as pev) is a multiplatform toolkit to work with PE (Portable Executable) binaries. Its main goal is to provide feature-rich tools for properly analyze binaries with a strong focus on suspicious ones.

Geo Firewall performs blocking of network traffic based on geography (geo IP), allows to add custom subnets, allows exceptions on ports for incoming traffic for specific geography, keeps visual and persistent logs, shows statistics, automatically updates geographical database.

Anoubis is a Security Suite which implements a secured environment for applications. The core of the suite is an Application Firewall alongside with a Sandbox. Mechanisms to assure the authenticity of files, directories and applications are provided.

Clam AntiVirus Client Library provides a simple API to the ClamAV daemon. ClamAVC does not require ClamAV to be installed. ClamAVC communicates with clamd using clamd's documented protocol using either TCP or a local Unix domain socket.

EaseFilter Folder Locker is a Windows file and folder protection solution built on the EaseFilter File Control, Encryption and Process Filter Driver SDK. It lets you lock, hide, and restrict access to files and folders in real time to prevent unauthorized access or modification. With the folder locker you can prevent your protected files being read,written,deleted, renamed, copied out of the protected folder, allow you to authorize or deny the file access to specific user or process, also allow you to hide the files or automatically encrypt/decrypt the files

Edit the Windows Registry from a Live CD to Remove Malware and fix problems that keeps your system from booting.

The EaseFilter Process Filter Driver SDK is a kernel-mode development kit designed to help developers monitor and control Windows process and thread activities. By intercepting process and thread operations at the kernel level, it enables the development of robust security applications that can prevent unauthorized or malicious processes from executing. With the Process Filter Driver, it allows you to prevent the untrusted executable binaries (malwares) from being launched, protect your data being damaged by the untrusted processes. It also enables your application to get the callback notification for the process/thread creation or termination, from the new process information you can get the parent process Id and thread Id of the new created process, you also can get the exact file name that is used to open the executable file and the command line that is used to execute the process if it is available.

This project is intended for generating a series of patches for the current version of QEMU to counter anti-detection and anti-debugging technics.

The EaseFilter Registry Filter Driver SDK is a powerful, kernel-mode development toolkit designed to help developers monitor, control, and protect Windows registry operations in real time. It enables the development of robust security, compliance, and system integrity solutions by intercepting and managing registry access before it reaches the Windows registry subsystem. The SDK allows your application to receive notifications before any registry operation is processed by the Windows Configuration Manager. By registering a RegistryCallback routine, your application can detect: Registry key creation, deletion, renaming Registry value changes Query operations

A packet dissector driven by machine learning algorithms. You train it to recognize specific types of packets by showing it examples and counterexamples of some packet type, and it will figure out which bits in the packet define it as the type you seek.

A hardware supported hypervisor originally built for malware analysis. Features: Linux VM introspection, minimal detectability, small (~150KB), simple, and well documented. Can be used for other purposes. Support for Intel-VT & Windows coming soon.

tpe-lkm is a Linux kernel module implementing Trusted Path Execution, a security feature that denies users from executing programs that are not owned by root, or are writable. This closes the door on a whole category of exploits where a malicious user tries to execute his or her own code to hack the system. Since the module doesn't use any kind of ACLs, it works out of the box with no configuration. It isn't complicated to test or deploy to current production systems. The module also has a few other grsecurity-inspired features implemented as "extras".

VirusTrap is an open source framework for penetration testers, network auditors, system administrators who need to analyze unknown binaries during their work. The scanner was made to help computer users identifying malicious files by scanning them with 25 antivirus engines.

Implement the Zero Trust File Access Control with encryption enabled, it can enhance the file security. By default all files will be encrypted automatically, all processes or users can't read the encrypted files, they will get the raw encrypted data. You can authorize the processes or users to access these encrypted files. EaseFilter File Control Filter Driver allows you to control the file I/O operations with the filter rule configuration by setting the whitelist and blacklist processes or users, you can allow or block the specific file I/O operation to the specific process or user, you can control who can read your file, allow or block the file modification, prevent your important file from being deleted, renamed.

Clamav-redirector is plug-in for Squid that uses the Google Safe Browsing database and, optionally, ClamAV to scan websites. It prevents you from accessing websites that contain malware such as viruses and trojans.

Is your server running slowly? Clamav-sniffer could help - it scans for malware such as phishes and viruses and configures your firewall to block the cracker.

mod_dnsblacklist is a Lighttpd module that use DNSBL in order to block spam relay via web forms, preventing URL injection, block http DDoS attacks from bots and generally protecting your web service denying access to a known bad IP address.

Final year project proposed malware detecting system for openwrt. Current develop environment: Hardware: Netgear WNDR3800 OS version: Openwrt Barrier Breaker

Common network dump analyzer tool to extract application data and pretty show. It reassembles and shows HTTP/SMTP/POP3/IMAP etc files. Please donate if you want this to be a candy.

EyeSpy is a is a PC/Windows based internet monitoring and visualization tool. It will scan and summarize all online activity, and display a realtime, interactive map showing the geographic location of all endpoints communicating online.

An Antispyware Application with optional realtime protection. Perfect for complimenting your existing AV!