This repository provides a curated collection of warning lists designed to enhance threat intelligence analysis within the MISP (Malware Information Sharing Platform) ecosystem. It helps users identify potential false positives, common false positives, and other contextual information related to indicators of compromise (IOCs) by flagging known benign or frequently encountered entities. The lists are valuable for security analysts, incident responders, and researchers seeking to refine their threat detection and analysis workflows.

How It Works

The warning lists are structured JSON files, each containing a collection of indicators (IP addresses, domains, file hashes, etc.) categorized by their nature (e.g., known cloud provider IPs, common dynamic DNS domains, EICAR test file hashes). These lists are integrated into MISP, where they are matched against attributes within events and indicators. When a match occurs, MISP displays a warning, allowing analysts to quickly assess the context and potential validity of an IOC, thereby reducing noise and improving analysis efficiency.

Quick Start & Requirements

• Installation: Clone the repository: git clone https://github.com/MISP/misp-warninglists.git
• Usage: The lists are typically consumed by MISP instances. For programmatic access or integration into other tools, the PyMISPWarningLists Python library is available.
• Dependencies: Python 3.x for PyMISPWarningLists. MISP instance for direct integration.
• Resources: The repository itself is small, but the integrated lists can grow.

Highlighted Details

• Comprehensive coverage of various categories including cloud provider IPs (AWS, Azure, GCP), popular services (Cloudflare, Fastly), top websites (Alexa, Tranco), security-related domains, and known false positives.
• Supports multiple matching types: perfect match, substring, hostname, CIDR, and regex, offering flexible integration.
• Lists are sourced from reputable providers and projects, including Cisco Umbrella, Mozilla, and various security research communities.
• Reused across multiple open-source projects beyond MISP, indicating broad utility and community adoption.

Maintenance & Community

The project is maintained by the MISP community. Specific contributors are not highlighted in the README, but the project benefits from the broader MISP ecosystem.

Licensing & Compatibility

• License: CC0 1.0 Universal (Public Domain Dedication).
• Compatibility: The CC0 license permits unrestricted use, modification, and distribution, making it highly compatible with commercial and closed-source applications.

Limitations & Caveats

The effectiveness of the warning lists is dependent on their regular updating to reflect current IP ranges, domain registrations, and evolving threat landscapes. Some lists may require specific attribute matching configurations within MISP to function optimally.