Function at 0x403cf0
Capabilities:
Create process on windows
Read .ini file

Disassembly:
push 0xffffffffffffffff
push 0x426a06
mov eax, dword fs:[0]
push eax
mov dword fs:[0], esp
sub esp, 0x41c
push ebx
push esi
push edi
push str.LaunchSetupApp___r_n
push 0x434580
call fcn.00401370
mov ecx, 0x41
xor eax, eax
lea edi, [esp + 0x20]
add esp, 8
rep stosd dword es:[edi], eax
mov ecx, 0x41
lea edi, [esp + 0x11c]
rep stosd dword es:[edi], eax
push 0x4343b0
lea ecx, [esp + 0x14]
call fcn.0041c375
mov ecx, 0x41
xor eax, eax
lea edi, [esp + 0x220]
lea edx, [esp + 0x220]
rep stosd dword es:[edi], eax
mov edi, 0x434478
or ecx, 0xffffffff
repne scasb al, byte es:[edi]
not ecx
sub edi, ecx
mov dword [esp + 0x430], 0
mov esi, edi
mov ebx, ecx
mov edi, edx
or ecx, 0xffffffff
repne scasb al, byte es:[edi]
mov ecx, ebx
dec edi
shr ecx, 2
rep movsd dword es:[edi], dword [esi]
mov ecx, ebx
lea edx, [esp + 0x220]
and ecx, 3
rep movsb byte es:[edi], byte [esi]
mov edi, str.ModemShow.ini
or ecx, 0xffffffff
repne scasb al, byte es:[edi]
not ecx
sub edi, ecx
mov esi, edi
mov ebx, ecx
mov edi, edx
or ecx, 0xffffffff
repne scasb al, byte es:[edi]
mov ecx, ebx
dec edi
shr ecx, 2
rep movsd dword es:[edi], dword [esi]
mov ecx, ebx
lea eax, [esp + 0x220]
and ecx, 3
push eax
rep movsb byte es:[edi], byte [esi]
lea ecx, [esp + 0x120]
push 0x104
push ecx
push str.NULL
push str.SetupFileName
push str.Show
call dword [sym.imp.KERNEL32.dll_GetPrivateProfileStringA]
lea edx, [esp + 0x11c]
lea ecx, [esp + 0xc]
push edx
call fcn.0041c375
lea ecx, [esp + 0xc]
mov byte [esp + 0x430], 1
call fcn.0041c6aa
push str.NULL
lea ecx, [esp + 0x18]
call fcn.0041c375
mov eax, dword [eax]
push eax
mov eax, dword [esp + 0x10]
push eax
call fcn.0040c46d
add esp, 8
lea ecx, [esp + 0x14]
test eax, eax
sete bl
call fcn.0041c34b
test bl, bl
je 0x403e55
push str.ShowModem.ini_::__Show_.SetupFileName_not_find__r_n
push 0x434580
call fcn.00401370
add esp, 8
jmp 0x403fad
mov edi, 0x434478
or ecx, 0xffffffff
xor eax, eax
lea edx, [esp + 0x18]
repne scasb al, byte es:[edi]
not ecx
sub edi, ecx
mov esi, edi
mov ebx, ecx
mov edi, edx
or ecx, 0xffffffff
repne scasb al, byte es:[edi]
mov ecx, ebx
dec edi
shr ecx, 2
rep movsd dword es:[edi], dword [esi]
mov ecx, ebx
and ecx, 3
rep movsb byte es:[edi], byte [esi]
lea edi, [esp + 0x18]
or ecx, 0xffffffff
repne scasb al, byte es:[edi]
not ecx
dec ecx
cmp byte [esp + ecx + 0x17], 0x5c
jne 0x403ea8
lea edi, [esp + 0x18]
or ecx, 0xffffffff
xor eax, eax
repne scasb al, byte es:[edi]
not ecx
dec ecx
mov byte [esp + ecx + 0x17], al
lea eax, [esp + 0x18]
lea ecx, [esp + 0x11c]
push eax
push ecx
call fcn.00403810
add esp, 8
test al, al
je 0x403f8e
mov ecx, 0x41
xor eax, eax
lea edi, [esp + 0x324]
lea edx, [esp + 0x324]
rep stosd dword es:[edi], eax
or ecx, 0xffffffff
lea edi, [esp + 0x18]
repne scasb al, byte es:[edi]
not ecx
sub edi, ecx
mov eax, ecx
mov esi, edi
mov edi, edx
lea edx, [esp + 0x18]
shr ecx, 2
rep movsd dword es:[edi], dword [esi]
mov ecx, eax
xor eax, eax
and ecx, 3
rep movsb byte es:[edi], byte [esi]
mov edi, 0x4321b0
or ecx, 0xffffffff
repne scasb al, byte es:[edi]
not ecx
sub edi, ecx
mov esi, edi
mov ebx, ecx
mov edi, edx
or ecx, 0xffffffff
repne scasb al, byte es:[edi]
mov ecx, ebx
dec edi
shr ecx, 2
rep movsd dword es:[edi], dword [esi]
mov ecx, ebx
lea edx, [esp + 0x18]
and ecx, 3
rep movsb byte es:[edi], byte [esi]
lea edi, [esp + 0x11c]
or ecx, 0xffffffff
repne scasb al, byte es:[edi]
not ecx
sub edi, ecx
mov esi, edi
mov ebx, ecx
mov edi, edx
or ecx, 0xffffffff
repne scasb al, byte es:[edi]
mov ecx, ebx
dec edi
shr ecx, 2
rep movsd dword es:[edi], dword [esi]
mov ecx, ebx
lea eax, [esp + 0x18]
and ecx, 3
push eax
push str.Exec_install_File_:__s_r_n
push 0x434580
rep movsb byte es:[edi], byte [esi]
call fcn.00401370
add esp, 0xc
lea ecx, [esp + 0x324]
lea edx, [esp + 0x18]
push 5
push ecx
push 0
push edx
push str.open
push 0
call dword [sym.imp.SHELL32.dll_ShellExecuteA]
jmp 0x403fad
lea eax, [esp + 0x11c]
lea ecx, [esp + 0x18]
push eax
push ecx
push str.install_file_not_exist_:__s_s_r_n
push 0x434580
call fcn.00401370
add esp, 0x10
lea ecx, [esp + 0xc]
mov byte [esp + 0x430], 0
call fcn.0041c34b
lea ecx, [esp + 0x10]
mov dword [esp + 0x430], 0xffffffff
call fcn.0041c34b
mov ecx, dword [esp + 0x428]
pop edi
pop esi
pop ebx
mov dword fs:[0], ecx
add esp, 0x428
ret