Fern Antivirus: Free, Lightweight Antivirus with Static & Dynamic Analysis

Next-Generation Protection without the Bloat

Traditional antivirus solutions are often slow, resource-heavy, and reactive, relying on outdated signature-based methods. Fern AV is a lightweight antivirus that combines static and dynamic analysis, leveraging ETW (Event Tracing for Windows) monitoring to detect malware in real-time—without slowing down your system.

Key Features

With zero-cost protection, minimal system impact, and cutting-edge detection, FERN-AV is the perfect solution for home users, businesses, and power users who need a fast, effective defense against modern cyber threats.

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AI-Powered Static Analysis (Pre-Execution Defense)

Uses machine learning models to analyze files before execution, detecting malware based on:

Code entropy and obfuscation patterns (packed, polymorphic, or encrypted malware).
Imported API functions that indicate malicious intent (e.g., VirtualAlloc, CreateRemoteThread).
Code similarity detection against a vast database of known threats.
Blocks zero-day malware without relying on signatures.
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Dynamic Analysis with ETW Monitoring (Behavior-Based Detection)

Uses ETW (Event Tracing for Windows) to monitor system events in real-time, detecting:

Process injections and hollowing (e.g., NtUnmapViewOfSection abuse).
Suspicious syscalls and API hooks (e.g., NtProtectVirtualMemory for self-modifying code).
File system and registry modifications linked to persistence mechanisms.
Identifies fileless malware and in-memory attacks that evade traditional AVs.
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Lightweight, Zero-Performance Impact

Consumes less than 50MB of RAM and runs efficiently in the background.

No intrusive pop-ups or bloatware—just pure protection.

Designed for low-resource environments, ideal for gaming, workstations, and older systems.

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Privacy-Focused

No telemetry, no data collection, no ads—your privacy is respected.

Use Cases

Lightweight Protection for Everyday Users
Ideal for casual users, gamers, and developers who need real-time protection without system slowdowns.
Advanced Security for Power Users
TProvides forensic-level threat detection using syscalls and ETW event tracing.
Business & Enterprise Security
A free alternative for small businesses and IT professionals needing low-impact, high-efficiency antivirus.

Impact & Results

malware detection rate using hybrid static & behavioral analysis with almost no false positives
Highly Accurate
zero slowdowns, runs efficiently on any system
Zero Bloat
blocks fileless malware and advanced threats that traditional AVs miss
Advanved Antivirus

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