Fenrir Simple Bash IOC Scanner
A lightweight bash script IOC scanner for Linux/Unix/macOS systems that detects malicious indicators through hash matching, filename analysis, string searches, and C2 server identification without requiring installation.
Free774
Free774
Fenrir Simple Bash IOC Scanner
A lightweight bash script IOC scanner for Linux/Unix/macOS systems that detects malicious indicators through hash matching, filename analysis, string searches, and C2 server identification without requiring installation.
Data verified May 2026
ADYour product here. Reach security decision-makers.Launch a campaignFenrir Simple Bash IOC Scanner Description
Fenrir is a bash script-based IOC (Indicators of Compromise) scanner designed for Linux, Unix, and macOS systems. The tool performs scanning operations without requiring installation or agent deployment, utilizing common system utilities to extract and analyze file attributes. The scanner supports multiple IOC detection methods including hash-based detection for MD5, SHA1, and SHA256 values using standard system tools like md5sum, sha1sum, and sha commands. It performs filename matching by checking for substring matches within full file paths and conducts string-based searches using grep to identify suspicious content within files. Fenrir includes C2 server detection capabilities by analyzing output from lsof commands to identify potential command and control communications. The tool features a Hot Time Frame function that uses stat commands to identify files created within specified epoch timestamp ranges. The scanner implements smart exclusions based on file size, extensions, and directory paths to optimize scan performance and reduce processing time. It operates with a low system footprint and can be deployed using Ansible playbooks with RAM drive solutions for enhanced performance. The tool is positioned as the third iteration in a series that includes THOR (commercial APT scanner) and LOKI (YARA-based IOC scanner), designed to address limitations found in its predecessors while maintaining simplicity and broad system compatibility.
Fenrir Simple Bash IOC Scanner FAQ
Common questions about Fenrir Simple Bash IOC Scanner including features, pricing, alternatives, and user reviews.
Fenrir Simple Bash IOC Scanner is A lightweight bash script IOC scanner for Linux/Unix/macOS systems that detects malicious indicators through hash matching, filename analysis, string searches, and C2 server identification without requiring installation. It is a Security Operations solution designed to help security teams with C2, Linux, IOC.
Fenrir Simple Bash IOC Scanner is a free Security Operations tool. This makes it accessible for organizations of all sizes, from startups to enterprises. Visit https://github.com/Neo23x0/Fenrir/ for download and installation instructions.
Popular alternatives to Fenrir Simple Bash IOC Scanner include:
1.Managed Agentic Threat Hunting - Managed Agentic Threat Hunting Service (IOC sweeps and hypothesis based hunting) (Commercial)
2.plast - Modular Threat Hunting Tool & Framework (Free)
3.Censys Threat Hunting - Proactive threat hunting platform for detecting adversary infrastructure (Commercial)
4.Confluera Proactive Threat Hunting - Real-time threat hunting using behavioral analytics & Continuous Attack Graphs. (Commercial)
5.Cythereal MAGIC™ - Malware hunting platform that auto-generates YARA rules from shared code analysis. (Commercial)
Compare all Fenrir Simple Bash IOC Scanner alternatives at https://cybersectools.com/alternatives/fenrir-simple-bash-ioc-scanner
Fenrir Simple Bash IOC Scanner is for security teams and organizations that need C2, Linux, IOC, Mac Os, Scanner. It's particularly suitable for small to medium-sized teams looking for cost-effective solutions. Other Security Operations tools can be found at https://cybersectools.com/categories/security-operations
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