Best Detection and Hunting Signatures Alternatives & Competitors in 2026

FireEye Red Team Tool Countermeasures

A set of rules for detecting threats in various formats, including Snort, Yara, ClamAV, and HXIOC.

YaraDbg

A free web-based Yara debugger for security analysts to write hunting or detection rules with ease.

yara-rust

Bindings for the Yara library from VirusTotal with support for Yara v4.2 and various features like rule compilation and scanning.

yara-parser

A Go library for manipulating YARA rulesets with the ability to programatically change metadata, rule names, and more.

yaramod

Yaramod is a library for parsing YARA rules into AST and building new YARA rulesets with C++ programming interface.

Shotgunyara

A tool that generates Yara rules for strings and their XOR encoded versions, as well as base64-encoded variations with different padding possibilities.

Detection Content Repository

Repository for detection content with various types of rules and payloads.

Malware Indicators of Compromise

Provides indicators of compromise (IOCs) to combat malware with Yara and Snort rules.

FireEye Mandiant SunBurst Countermeasures

FireEye Mandiant SunBurst Countermeasures: freely available rules for detecting malicious files and activity

YARA Rules for ProcFilter

YARA rules for ProcFilter to detect malware and threats

YARA Matches Correspondance Array (YMCA)

Tool for visualizing correspondences between YARA ruleset and samples

yaml2yara

A tool for creating custom detection rules from YAML input

Yara-Java

Embeddable Yara library for Java with support for loading rules and scanning data.

ReversingLabs YARA Rules

Official repository of YARA rules for threat detection and hunting

yara_repo

Repository of Yara Rules created by TjNel.

Google Security Operations

Cloud-native SIEM, SOAR, and threat intel platform for SecOps teams

Defender Lens

Turn Any Threat into a Detection Rule

aDolus FACT - Malware Detection

FACT detects malware & ransomware in packages using AV scans & YARA rules.

Cythereal MAGIC™

Malware hunting platform that auto-generates YARA rules from shared code analysis.

Cythereal MAGIC EWS

Analyzes stopped attacks to auto-generate YARA rules and IoCs against APTs.

PhishingKit-Yara-Rules

A StalkPhish Project YARA repository for Phishing Kits zip files.

OCyara

OCyara performs OCR on images and PDF files to extract text content and scan it against Yara rules for malware detection.

Yara Pattern Scanner

A Windows context menu integration tool that scans files and folders for malware patterns, crypto signatures, and malicious documents using Yara rules and PEID signatures.

Sublime Security Sublime Rules

Open-source detection rules for email attacks like BEC, phishing, and malware

THOR Lite

A free, fast, and flexible multi-platform IOC and YARA scanner for Windows, Linux, and macOS.

Yara Manager

A program to manage yara ruleset in a database with support for different databases and configuration options.

Yabin

Yabin creates Yara signatures from malware to find similar samples.

yextend

yextend extends Yara's functionality by automatically handling archived and compressed content inflation, enabling pattern matching on files buried within multiple layers of archives.

YaraParser

Python 3 tool for parsing Yara rules with ongoing development.

Mquery

Blazingly fast Yara queries for malware analysts with an analyst-friendly web GUI.

Factual Rules Generator

An open source tool that generates YARA rules from installed software on running operating systems for efficient software identification in digital forensic investigations.

Yara Validator

A tool for validating and repairing Yara rules

CrowdFMS

CrowdFMS is a CrowdStrike framework that automates malware sample collection from VirusTotal using YARA rule-based notifications and the Private API system.

CDI_yara

A collection of YARA rules for public use, built from intelligence profiles and file work.

Canadian Centre for Cyber Security CCCS YARA Specification

Define and validate YARA rule metadata with CCCS YARA Specification.

Yara4Pentesters

A collection of YARA rules designed to identify files containing sensitive information such as usernames, passwords, and credit card numbers for penetration testing and forensic analysis.

base64_substring

A tool that generates YARA rules to search for specific terms within base64-encoded malware samples by enumerating all possible encoding variations.

YAYA - Yet Another Yara Automaton

Automatically curate open-source Yara rules and run scans with YAYA.

Yara-Repo

Collects Yara rules from over 150 free resources, a free alternative to Valhalla.

lw-yara

A Yara ruleset designed to detect PHP shells and other webserver malware for malware analysis and threat detection.

ThreatKB

Knowledge base workflow management dashboard for YARA rules and C2 artifacts.

InQuest YARA Rules

A collection of YARA rules for research and hunting purposes.

KLara

KLara is a distributed system written in Python that helps Threat Intelligence researchers hunt for new malware using Yara.

Yara Rules by Malgamy

Collection of Yara rules for file identification and classification

Androguard module for Yara

Integrates static APK analysis with Yara and requires re-compilation of Yara with the androguard module.

Fnord

Fnord is a pattern extraction tool that analyzes obfuscated code using sliding window techniques to identify frequent byte sequences and generate experimental YARA rules for malware analysis.

LOKI

LOKI is a simple IOC and YARA Scanner for Indicators of Compromise Detection.

Signature-Base

YARA signature and IOC database for LOKI and THOR Lite scanners with high quality rules and IOCs.