Malware Analysis & Reverse Engineering
Sandboxes, disassemblers, debuggers and related tooling for examining suspicious binaries and scripts in controlled environments. Endpoint detection products belong in Defensive Security & Monitoring; exploit frameworks belong in Offensive Security & Pentesting.

VirusTotal
Online multi-engine scanner for analysing files, URLs, domains and IPs for malware signals, with free public and paid tiers.
Malware Analysis & Reverse EngineeringFreemium