Best GCTI Open Source Detection Signatures Alternatives & Competitors in 2026

Malware Signatures Overview

A collection of Yara signatures developed by Citizen Lab to detect malware used in targeted attacks against civil society organizations.

lw-yara

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

The Threat Hunter Playbook

A community-driven open source project providing interactive notebooks with detection logic, adversary tradecraft, and resources organized according to MITRE ATT&CK framework for threat hunting and detection development.

ocaml-yara

An OCaml Ctypes wrapper for the YARA matching engine that enables malware identification capabilities in OCaml applications.

YARA Public YARA rules

A community-maintained repository of YARA rules for detecting and classifying malware based on patterns and characteristics.

Binary Defense Threat Hunting

A managed security service that uses hypothesis-based threat hunting to proactively discover hidden threats, create new detection rules, and improve overall security posture.

detections.ai Detections

Community platform for sharing and creating detection rules with AI

Axur AI-Powered Cyber Threat Intelligence

AI-powered cyber threat intelligence platform with real-time monitoring

SOC Prime Threat Detection Marketplace

Threat detection marketplace with Sigma rules for SIEM and shift-left detection

Red Canary Threat Intelligence

Threat intelligence service providing threat profiles and analytics for MDR

Cythereal MAGIC EWS

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

Sesame IT HOSHI

Curated attack use case platform that feeds threat scenarios into Jizô AI.

Sigma Query

Searchable repository of Sigma detection rules for threat hunting and SIEM

Sublime Security Sublime Rules

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

Stamus Clear NDR Community

Open source Suricata-based NDR system with threat detection and analysis

InQuest Labs

The Trystero Project is a threat intelligence platform that measures email security efficacy and provides various tools and resources, while VMware Carbon Black offers endpoint protection and workload security solutions.

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.

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.

yara-rust

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

ThreatKB

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

KLara

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

Signature-Base

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

Sigma

Sigma is a generic and open signature format for SIEM systems and other security tools to detect and respond to threats.

Project Icewater

A project providing open-source YARA rules for malware and malicious file detection

Yara Rule Generator

A tool for quick and effective Yara rule creation to isolate malware families and malicious objects.

Yara Rules Project

A repository of Yara signatures under the GNU-GPLv2 license for the cybersecurity community.

BinaryAlert

BinaryAlert is an open-source serverless AWS pipeline that automatically scans files uploaded to S3 buckets with YARA rules and generates immediate alerts when malware is detected.

YLS Language Server for YARA Language

YLS Language Server for YARA Language with comprehensive features and Python 3.8 support.

Private Yara Rules Repository

A repository of freely usable Yara rules for detection systems, with automated error detection workflows.

YARA Rules Collection

Collection of YARA signatures from recent malware research.

Detection Content Repository

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

ocaml-yara by Elastic

OCaml bindings to the YARA scanning engine for integrating YARA scanning capabilities into OCaml projects

Elastic Security YARA Rules

Signature-based YARA rules for detecting and preventing threats within Linux, Windows, and macOS systems.

Malware Indicators of Compromise

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

Falco Rules

A repository of officially managed detection rules for the Falco runtime security monitoring system that identifies threats, abnormal behaviors, and compliance violations through syscall and container event analysis.

FireEye Red Team Tool Countermeasures

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

YARA-Signatures

A collection of public YARA signatures for various malware families.

Malpedia's YARA-Signator Rules

Repository of automatically generated YARA rules from Malpedia's YARA-Signator with detailed statistics.

VT_RuleMGR.py

Tool for managing Yara rules on VirusTotal

Splunk Attack Range

An open-source platform that builds instrumented environments, simulates attacks, and integrates with Splunk for detection rule development and testing.

Synthetic Adversarial Log Objects (SALO)

SALO is a framework that generates synthetic log events for security testing and research without requiring actual infrastructure or triggering real events.

Sublime Platform

A free and open platform for detecting and preventing email attacks like BEC, malware, and credential phishing, utilizing Message Query Language (MQL) for behavior description.

yara-rules

A repository of YARA rules for identifying and classifying malware through pattern-based detection.

Zircolite

Standalone SIGMA-based detection tool for EVTX, Auditd, Sysmon for Linux, XML or JSONL/NDJSON Logs.

Matano Open Source Security Data Lake

An open source cloud-native security data lake platform for AWS that normalizes security logs into structured data with Detection-as-Code capabilities and vendor-neutral storage using open standards.

Google Security Operations

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

LogCraft Detection Engineering

Detection-as-code platform for managing detection rules across SIEM/EDR/XDR