Function at 0x4480c0
Capabilities:
Create process on windows
Delete file
Get common file path
Write and execute a file
Write file on windows

Disassembly:
push ebp
mov ebp, esp
and esp, 0xfffffff0
mov eax, 0x10a8
call fcn.004887b0
mov eax, dword [0x4db06c]
xor eax, esp
mov dword [esp + 0x10a4], eax
push esi
push edi
lea eax, [esp + 0x68]
mov edi, ecx
push eax
push 0x104
call dword [sym.imp.KERNEL30.dll_GetTempPathW]
test eax, eax
je 0x448119
push SysReAllocString
push str.fastcopy_upd32.exe
xor edx, edx
lea ecx, [esp + 0x70]
call fcn.00462880
add esp, 8
lea eax, [esp + 0x68]
push eax
call dword [sym.imp.KERNEL30.dll_DeleteFileW]
sub esp, 0xc
lea ecx, [esp + 0x27c]
call fcn.0045ef80
add esp, 0xc
test eax, eax
je 0x448199
push SysReAllocString
push str.fastcopy_upd32.exe
lea edx, [esp + 0x278]
lea ecx, [esp + 0x70]
call fcn.00462880
add esp, 8
lea eax, [esp + 0x68]
push 0
push 0x80
push 2
push 0
push 0
push 0x40000000
push eax
call dword [sym.imp.KERNEL30.dll_CreateFileW]
mov esi, eax
cmp esi, 0xffffffff
jne 0x4481af
mov esi, dword [edi]
call dword [sym.imp.KERNEL30.dll_GetLastError]
push eax
lea eax, [esp + 0x6c]
push eax
push str.Update_CreateFile_err__s___d
call fcn.00463290
add esp, 0xc
mov ecx, edi
push eax
push 0xbcd
call dword [esi + 0xf8]
xor eax, eax
pop edi
pop esi
mov ecx, dword [esp + 0x10a4]
xor ecx, esp
call fcn.00487555
mov esp, ebp
pop ebp
ret
push 0
lea eax, [esp + 0x10]
mov dword [esp + 0x10], 0
push eax
push dword [edi + 0x409c]
push dword [edi + 0x4094]
push esi
call dword [sym.imp.KERNEL30.dll_WriteFile]
push esi
test eax, eax
jne 0x4481f1
call dword [sym.imp.KERNEL30.dll_CloseHandle]
mov esi, dword [edi]
call dword [sym.imp.KERNEL30.dll_GetLastError]
push eax
lea eax, [esp + 0x6c]
push eax
push str.Update_WriteFile_err__s___d
jmp 0x448183
call dword [sym.imp.KERNEL30.dll_CloseHandle]
push 0x410
lea eax, [esp + 0x47c]
push 0
push eax
call fcn.0048b570
add esp, 0xc
call fcn.00461a70
mov esi, eax
test esi, esi
je 0x448258
push str.fastcopy.exe
push esi
call fcn.004958b1
add esp, 8
test eax, eax
je 0x448258
push str.fcp.exe
push esi
call fcn.004958b1
add esp, 8
test eax, eax
je 0x448258
push esi
push str._SELFNAME__s_
lea eax, [esp + 0x480]
push 0x208
push eax
call fcn.00462ec0
add esp, 0x10
lea eax, [esp + 0x478]
push eax
call fcn.00461c00
cmp dword [edi + 0x1c88], 3
mov ecx, str._UPDATE
push eax
mov eax, str._SILENT__EXTRACT__NOSUBDIR
cmovne eax, ecx
push eax
lea eax, [esp + 0x74]
push eax
push str.__s___s__SELFDELDIR__DIR__s___s
lea eax, [esp + 0x89c]
push 0x410
push eax
call fcn.00462ec0
add esp, 0x1c
mov dword [esp + 0x20], 0x44
lea eax, [esp + 0x24]
push 0x40
push 0
push eax
call fcn.0048b570
add esp, 0xc
lea eax, [esp + 0x10]
xorps xmm0, xmm0
movaps xmmword [esp + 0x10], xmm0
push eax
lea eax, [esp + 0x24]
push eax
call fcn.00461c00
push eax
push 0
push 0x8000000
push 0
push 0
push 0
lea eax, [esp + 0x8a8]
push eax
push 0
call dword [sym.imp.KERNEL30.dll_CreateProcessW]
test eax, eax
je 0x4481dc
push dword [esp + 0x14]
mov esi, dword [sym.imp.KERNEL30.dll_CloseHandle]
call esi
push dword [esp + 0x10]
call esi
lea ecx, [edi + 0x4068]
call fcn.00433520
mov eax, dword [edi]
mov ecx, edi
push 0
push 0
push 0x10
call dword [eax + 0x140]
mov ecx, dword [esp + 0x10ac]
mov eax, 1
pop edi
pop esi
xor ecx, esp
call fcn.00487555
mov esp, ebp
pop ebp
ret