VX-API
Collection of various malicious functionality
...The repository covers areas such as anti-debugging, cryptographic helpers, fingerprinting, process creation, process injection, networking, library loading, and string handling. It also includes examples involving shellcode execution, privilege-related behavior, and Windows internals. Individual components can be examined separately rather than used as one monolithic program. Because the code can enable harmful behavior, it is best handled only in isolated, authorized security research environments.