What is YARA? Get to know this malware research tool

**Executive summary:** This blog post provides a concise introduction to YARA rule creation, covering rule sections (meta, strings, condition), string types and modifiers (ascii, wide, base64, XOR), and conditional expressions, illustrated with a simple "hello_world" rule and a sample FuxSocy ransomware detection rule to show practical application. The intent is to teach readable, effective YARA rules for malware detection without requiring advanced reverse-engineering skills.