Undocumented functions of NTDLL

typedef struct _SYSTEM_MODULE_INFORMATION {


  ULONG                ModulesCount;
  SYSTEM_MODULE        Modules[0];


} SYSTEM_MODULE_INFORMATION, *PSYSTEM_MODULE_INFORMATION;

See SYSTEM_MODULE for details.
See NtQuerySystemInformation with SystemModuleInformation class for global module enumeration.
See LdrQueryProcessModuleInformation for process module enumeration.