#ifndef _NTPSAPI_H
//
// Processes
//
#if (PHNT_MODE != PHNT_MODE_KERNEL)
/**
 * Suspends the specified process.
 *
 * \param ProcessHandle A handle to the process to be suspended.
 * \return NTSTATUS Successful or errant status.
 * \remarks Use NtCreateProcessStateChange instead.
 */
NTSYSCALLAPI
NTSTATUS
NTAPI
NtSuspendProcess(
    _In_ HANDLE ProcessHandle
    );
View code on GitHub#ifndef _NTZWAPI_H
NTSYSCALLAPI
NTSTATUS
NTAPI
ZwSuspendProcess(
    _In_ HANDLE ProcessHandle
    );
View code on GitHubSuspends all threads in the process.
ProcessHandle - a handle to a process granting PROCESS_SUSPEND_RESUME access.This function enumerates and suspends threads one-by-one and is, therefore, prone to race conditions.
The function ignores threads created with the THREAD_CREATE_FLAGS_BYPASS_PROCESS_FREEZE flag.
This functionality is not exposed in Win32 API.