RTL_PROCESS_MODULES

The RTL_PROCESS_MODULES structure is what a successful call to ZwQuerySystemInformation or NtQuerySystemInformation produces in its output buffer when given the information class SystemModuleInformation (0x0B).

Documentation Status

The RTL_PROCESS_MODULES structure is not documented.

Microsoft does publish the practical equivalent of a C-language definition as type information in public symbol files, though not for the kernel, where the structure is prepared, nor even for low-level user-mode DLLs that interpret the structure, but for various higher-level user-mode DLLs such as URLMON.DLL and only then starting with version 6.2.

Two earlier disclosures of type information are known, though not in symbol files but in statically linked libraries: GDISRVL.LIB from the Device Driver Kit (DDK) for Windows NT 3.51; and SHELL32.LIB from the DDK for Windows NT 4.0.

Layout

The RTL_PROCESS_MODULES is 0x0120 and 0x0130 in 32-bit and 64-bit Windows, respectively.

Offset (x86) Offset (x64) Definition
0x00 0x00
ULONG NumberOfModules;
0x04 0x08
RTL_PROCESS_MODULE_INFORMATION Modules [ANYSIZE_ARRAY];