This book will teach us how to create malware using MSFVENOM, NJRAT, and other malware development environments. After the creation of malware, we shall perform hybrid malware analysis on Kali, Windows, and REMNUX Virtual machines. These machines will work as a sandbox to protect our main operating system. REMNUX is a virtual machine specially designed for malware analysis and comes with a bundle of preinstall tools like SHA256SUm, TRID, FILE, YARA-RULES, SIGNSRCH, PEFRAME, PECHECK, STRINGS, PESTR, XORSEARCH, BRXOR.PY, BBCRACK, FLOSS, BINEE, CAPA, RETDEC-DECOMPILER, OBJDUMP, QLTOOL, PDFID, PEEPDF, PDF-PARSER, BASE64, ANDROGUARD, BAKSMALI, APKTOOL, JADX, Hex Editor. Along with these tools, this book covers a few more Windows tools such as PEID, PEDUMP, DIE, and Dependency Walker for malware analysis of WANNACRY Ransomware.