YaraHunter is a malware detection tool that scans container images, running Docker containers, and filesystems using YARA rulesets to identify indicators of malware and potential compromises. The tool operates across multiple deployment scenarios: - Build-and-test environments: integrates into CI/CD pipelines to scan build artifacts for malware indicators - At-rest scanning: examines local container images before deployment to verify they are free from malware - Runtime scanning: monitors running Docker containers when unusual network traffic or CPU activity is detected - Filesystem scanning: performs on-demand scans of local filesystems for indicators of compromise Key technical capabilities include scanning both running and static containers, filesystem analysis, and CI/CD integration support. The tool is packaged as a portable Docker container and provides JSON output for automated processing and integration with other security tools. YaraHunter is designed for integration into the ThreatMapper threat discovery platform and supports automated deployment scenarios through its standardized output format.