Function at 0x401000
Capabilities:
Accept command line arguments
Create process on windows
Create process suspended
Create thread
Inject thread
Resume thread
Set current directory
Terminate process
Use process replacement

Disassembly:
lea ecx, [esp + 4]
and esp, 0xfffffff0
push dword [ecx - 4]
push ebp
mov ebp, esp
push esi
push ebx
push ecx
sub esp, 0xac
mov dword [ebp - 0x28], 0x104
mov eax, dword [ebp - 0x28]
lea ebx, [eax + eax]
mov eax, dword [sym.imp.KERNEL32.DLL_GetProcessHeap]
call eax
mov dword [esp + 8], ebx
mov dword [esp + 4], 8
mov dword [esp], eax
mov eax, dword [sym.imp.KERNEL32.DLL_HeapAlloc]
call eax
sub esp, 0xc
mov dword [ebp - 0x1c], eax
jmp 0x40107e
mov eax, dword [ebp - 0x28]
add eax, 0x104
mov dword [ebp - 0x28], eax
mov eax, dword [ebp - 0x28]
add eax, eax
mov dword [esp + 0xc], eax
mov eax, dword [ebp - 0x1c]
mov dword [esp + 8], eax
mov dword [esp + 4], 8
mov eax, dword [ebp - 0x1c]
mov dword [esp], eax
mov eax, dword [sym.imp.KERNEL32.DLL_HeapReAlloc]
call eax
sub esp, 0x10
mov dword [ebp - 0x1c], eax
mov eax, dword [sym.imp.KERNEL32.DLL_GetCurrentProcess]
call eax
lea edx, [ebp - 0x28]
mov dword [esp + 0xc], edx
mov edx, dword [ebp - 0x1c]
mov dword [esp + 8], edx
mov dword [esp + 4], 0
mov dword [esp], eax
mov eax, dword [sym.imp.KERNEL32.DLL_QueryFullProcessImageNameW]
call eax
sub esp, 0x10
test eax, eax
je 0x401048
mov eax, dword [ebp - 0x1c]
mov dword [esp], eax
mov eax, dword [sym.imp.KERNEL32.DLL_lstrlenW]
call eax
sub esp, 4
mov dword [ebp - 0x20], eax
jmp 0x4010fb
mov eax, dword [ebp - 0x20]
lea edx, [eax + eax]
mov eax, dword [ebp - 0x1c]
add eax, edx
movzx eax, word [eax]
cmp ax, 0x5c
jne 0x4010f7
mov eax, dword [ebp - 0x20]
lea edx, [eax + eax]
mov eax, dword [ebp - 0x1c]
add eax, edx
mov word [eax], 0
mov eax, dword [ebp - 0x1c]
mov dword [esp], eax
mov eax, dword [sym.imp.KERNEL32.DLL_SetCurrentDirectoryW]
call eax
sub esp, 4
jmp 0x401101
sub dword [ebp - 0x20], 1
cmp dword [ebp - 0x20], 0xffffffff
jne 0x4010c1
pxor xmm0, xmm0
movups xmmword [ebp - 0x38], xmm0
pxor xmm0, xmm0
movups xmmword [ebp - 0x7c], xmm0
movups xmmword [ebp - 0x6c], xmm0
movups xmmword [ebp - 0x5c], xmm0
movups xmmword [ebp - 0x4c], xmm0
movd dword [ebp - 0x3c], xmm0
mov eax, dword [sym.imp.KERNEL32.DLL_GetCommandLineW]
call eax
mov ebx, eax
mov eax, dword [sym.imp.KERNEL32.DLL_GetCommandLineW]
call eax
mov dword [esp], eax
mov eax, dword [sym.imp.KERNEL32.DLL_lstrlenW]
call eax
sub esp, 4
add eax, 0x52
lea esi, [eax + eax]
mov eax, dword [sym.imp.KERNEL32.DLL_GetProcessHeap]
call eax
mov dword [esp + 8], esi
mov dword [esp + 4], 8
mov dword [esp], eax
mov eax, dword [sym.imp.KERNEL32.DLL_HeapAlloc]
call eax
sub esp, 0xc
mov dword [esp + 4], str.steam.exe__cef_single_process__cef_disable_breakpad__cef_disable_gpu_compositing
mov dword [esp], eax
mov eax, dword [sym.imp.KERNEL32.DLL_lstrcpyW]
call eax
sub esp, 8
mov dword [esp + 4], ebx
mov dword [esp], eax
mov eax, dword [sym.imp.KERNEL32.DLL_lstrcatW]
call eax
sub esp, 8
lea edx, [ebp - 0x38]
mov dword [esp + 0x24], edx
lea edx, [ebp - 0x7c]
mov dword [esp + 0x20], edx
mov dword [esp + 0x1c], 0
mov dword [esp + 0x18], 0
mov dword [esp + 0x14], 4
mov dword [esp + 0x10], 0
mov dword [esp + 0xc], 0
mov dword [esp + 8], 0
mov dword [esp + 4], eax
mov dword [esp], 0
mov eax, dword [sym.imp.KERNEL32.DLL_CreateProcessW]
call eax
sub esp, 0x28
mov dword [ebp - 0x28], 0x2a
mov edx, dword [ebp - 0x28]
mov eax, dword [ebp - 0x38]
mov dword [esp + 0x10], 4
mov dword [esp + 0xc], 0x1000
mov dword [esp + 8], edx
mov dword [esp + 4], 0
mov dword [esp], eax
mov eax, dword [sym.imp.KERNEL32.DLL_VirtualAllocEx]
call eax
sub esp, 0x14
mov dword [ebp - 0x24], eax
mov edx, dword [ebp - 0x28]
mov eax, dword [ebp - 0x38]
mov dword [esp + 0x10], 0
mov dword [esp + 0xc], edx
mov dword [esp + 8], str.NoSteamWebHelper.dll
mov edx, dword [ebp - 0x24]
mov dword [esp + 4], edx
mov dword [esp], eax
mov eax, dword [sym.imp.KERNEL32.DLL_WriteProcessMemory]
call eax
sub esp, 0x14
mov eax, dword [ebp - 0x38]
mov dword [esp + 0x18], 0
mov dword [esp + 0x14], 0
mov edx, dword [ebp - 0x24]
mov dword [esp + 0x10], edx
mov edx, dword [sym.imp.KERNEL32.DLL_LoadLibraryW]
mov dword [esp + 0xc], edx
mov dword [esp + 8], 0
mov dword [esp + 4], 0
mov dword [esp], eax
mov eax, dword [sym.imp.KERNEL32.DLL_CreateRemoteThread]
call eax
sub esp, 0x1c
mov dword [esp], eax
mov eax, dword [sym.imp.KERNEL32.DLL_CloseHandle]
call eax
sub esp, 4
mov eax, dword [ebp - 0x34]
mov dword [esp], eax
mov eax, dword [sym.imp.KERNEL32.DLL_ResumeThread]
call eax
sub esp, 4
mov eax, dword [ebp - 0x34]
mov dword [esp], eax
mov eax, dword [sym.imp.KERNEL32.DLL_CloseHandle]
call eax
sub esp, 4
mov eax, dword [ebp - 0x38]
mov dword [esp], eax
mov eax, dword [sym.imp.KERNEL32.DLL_CloseHandle]
call eax
sub esp, 4
mov dword [esp], 0
mov eax, dword [sym.imp.KERNEL32.DLL_ExitProcess]
call eax
nop
nop
nop