Function at 0x43eb90
Capabilities:
Check os version
Get common file path
Get file version info
Query or enumerate registry value

Disassembly:
mov eax, dword fs:[0]
push 0xffffffffffffffff
push 0x44c5d6
push eax
mov eax, dword [0x45bd20]
mov dword fs:[0], esp
sub esp, 0x348
push ebx
xor ebx, ebx
cmp eax, ebx
push esi
jne 0x43f049
mov esi, dword [sym.imp.KERNEL32.dll_GetVersionExW]
push ebp
push edi
mov ecx, 0x44
xor eax, eax
lea edi, [esp + 0x40]
mov dword [esp + 0x3c], 0x114
mov dword [0x45bd20], 1
rep stosd dword es:[edi], eax
lea eax, [esp + 0x3c]
push eax
call esi
test eax, eax
je 0x43ec8a
mov eax, dword [esp + 0x48]
mov ecx, dword [esp + 0x40]
mov edx, dword [esp + 0x44]
mov dword [0x45bd2c], eax
mov eax, dword [esp + 0x4c]
mov dword [0x45bd24], ecx
cmp eax, 2
mov dword [0x45bd28], edx
mov dword [0x45bd30], eax
jne 0x43ec8a
cmp ecx, 4
jb 0x43ec8a
mov ecx, 0x46
xor eax, eax
lea edi, [esp + 0x154]
mov dword [esp + 0x150], 0x11c
rep stosd dword es:[edi], eax
lea ecx, [esp + 0x150]
push ecx
call esi
test eax, eax
je 0x43ec8a
mov ax, word [esp + 0x266]
mov dx, word [esp + 0x264]
mov cx, word [esp + 0x268]
mov word [0x45be36], ax
mov ax, word [esp + 0x26a]
mov word [0x45be34], dx
mov byte [0x45be3a], al
mov word [0x45be38], cx
mov byte [0x45be3b], ah
push 0x104
push 0x45be3c
call dword [sym.imp.KERNEL32.dll_GetSystemDirectoryW]
push 0x45be3c
call dword [sym.imp.MSVCRT.dll_wcslen]
mov ebp, dword [sym.imp.ADVAPI32.dll_RegQueryValueExW]
add esp, 4
test eax, eax
jbe 0x43ee61
mov edi, dword [sym.imp.MSVCRT.dll_wcscpy]
push 0x45be3c
push 0x45c044
call edi
mov esi, dword [sym.imp.MSVCRT.dll_wcsrchr]
push 0x5c
push 0x45c044
call esi
add esp, 0x10
cmp eax, ebx
je 0x43ece1
mov word [eax], bx
push 0x45c044
call dword [sym.imp.MSVCRT.dll_wcslen]
add esp, 4
test eax, eax
jbe 0x43ee61
push 0x45c044
push 0x45c65c
call edi
push 0x5c
push 0x45c65c
call esi
add esp, 0x10
cmp eax, ebx
je 0x43ed16
mov word [eax], bx
lea edx, [esp + 0x14]
mov dword [esp + 0x14], ebx
push edx
push 0x20019
push ebx
push str.SoftwareMicrosoftWindowsCurrentVersion
push SysFreeString
call dword [sym.imp.ADVAPI32.dll_RegOpenKeyExW]
test eax, eax
jne 0x43ee01
mov eax, dword [esp + 0x14]
cmp eax, ebx
je 0x43ee01
lea ecx, [esp + 0x18]
lea edx, [esp + 0x10]
push ecx
push ebx
push edx
push ebx
push str.ProgramFilesDir
push eax
mov dword [esp + 0x28], ebx
mov dword [esp + 0x30], ebx
call ebp
test eax, eax
mov esi, 0x102
jne 0x43eda4
mov eax, dword [esp + 0x10]
cmp eax, 1
je 0x43ed86
cmp eax, 2
je 0x43ed86
cmp eax, 6
je 0x43ed86
cmp eax, 7
jne 0x43eda4
cmp dword [esp + 0x18], esi
ja 0x43eda4
mov ecx, dword [esp + 0x14]
lea eax, [esp + 0x18]
push eax
push 0x45c24c
push ebx
push ebx
push str.ProgramFilesDir
push ecx
call ebp
mov ecx, dword [esp + 0x14]
lea edx, [esp + 0x18]
push edx
lea eax, [esp + 0x14]
push ebx
push eax
push ebx
push str.CommonFilesDir
push ecx
call ebp
test eax, eax
jne 0x43edf6
mov eax, dword [esp + 0x10]
cmp eax, 1
je 0x43edd8
cmp eax, 2
je 0x43edd8
cmp eax, 6
je 0x43edd8
cmp eax, 7
jne 0x43edf6
cmp dword [esp + 0x18], esi
ja 0x43edf6
mov eax, dword [esp + 0x14]
lea edx, [esp + 0x18]
push edx
push 0x45c454
push ebx
push ebx
push str.CommonFilesDir
push eax
call ebp
mov ecx, dword [esp + 0x14]
push ecx
call dword [sym.imp.ADVAPI32.dll_RegCloseKey]
push 0x45c24c
call dword [sym.imp.MSVCRT.dll_wcslen]
mov esi, dword [sym.imp.MSVCRT.dll_wcscat]
add esp, 4
test eax, eax
jne 0x43ee34
push 0x45c65c
push 0x45c24c
call edi
push str.Program_Files
push 0x45c24c
call esi
add esp, 0x10
push 0x45c454
call dword [sym.imp.MSVCRT.dll_wcslen]
add esp, 4
test eax, eax
jne 0x43ee61
push 0x45c24c
push 0x45c454
call edi
push str.Common_Files
push 0x45c454
call esi
add esp, 0x10
xor esi, esi
mov dword [esp + 0x14], esi
lea ecx, [esp + 0x20]
mov dword [esp + 0x360], ebx
call sub.MFC42u.DLL_CString::CString_3
lea edx, [esp + 0x10]
mov byte [esp + 0x360], 1
push edx
push 0x20019
push ebx
push str.SYSTEMCurrentControlSetControlNlsLanguage
push SysFreeString
mov dword [esp + 0x24], ebx
call dword [sym.imp.ADVAPI32.dll_RegOpenKeyExW]
cmp eax, ebx
jne 0x43ef0c
xor eax, eax
mov esi, dword [esp + 0x10]
mov dword [esp + 0x26], eax
lea ecx, [esp + 0x1c]
mov dword [esp + 0x2a], eax
lea edx, [esp + 0x24]
mov dword [esp + 0x2e], eax
push ecx
mov dword [esp + 0x36], eax
push edx
mov dword [esp + 0x3e], eax
lea eax, [esp + 0x18]
push eax
push ebx
push str.InstallLanguage
push esi
mov dword [esp + 0x2c], esi
mov dword [esp + 0x34], 0xa
mov word [esp + 0x3c], bx
mov dword [esp + 0x28], ebx
call ebp
cmp eax, ebx
jne 0x43eefb
lea ecx, [esp + 0x24]
push ecx
lea ecx, [esp + 0x24]
call sub.MFC42u.DLL_CString::operator
cmp esi, ebx
je 0x43ef0c
push esi
call dword [sym.imp.ADVAPI32.dll_RegCloseKey]
xor esi, esi
mov dword [esp + 0x14], esi
mov eax, dword [esp + 0x20]
cmp dword [eax - 8], ebx
jle 0x43ef2e
push 0x45c864
push 0x459894
push eax
call dword [sym.imp.MSVCRT.dll_swscanf]
add esp, 0xc
jmp 0x43f02c
mov ecx, 0x81
xor eax, eax
lea edi, [esp + 0x152]
mov word [esp + 0x150], bx
rep stosd dword es:[edi], eax
push 0x45be3c
lea edx, [esp + 0x154]
push str._suser.exe
push edx
stosw word es:[edi], ax
call dword [sym.imp.MSVCRT.dll_swprintf]
add esp, 0xc
lea eax, [esp + 0x18]
lea ecx, [esp + 0x150]
mov dword [esp + 0x18], ebx
push eax
push ecx
call sub.VERSION.dll_GetFileVersionInfoSizeW
push eax
mov dword [esp + 0x14], eax
call sub.MFC42u.DLL_operatornew
mov ebp, eax
add esp, 4
cmp ebp, ebx
je 0x43f02c
mov ecx, dword [esp + 0x10]
xor eax, eax
mov edx, ecx
mov edi, ebp
shr ecx, 2
rep stosd dword es:[edi], eax
mov ecx, edx
push ebp
and ecx, 3
lea edx, [esp + 0x154]
rep stosb byte es:[edi], al
mov eax, dword [esp + 0x14]
mov ecx, dword [esp + 0x1c]
push eax
push ecx
push edx
call sub.VERSION.dll_GetFileVersionInfoW
test eax, eax
je 0x43f023
lea eax, [esp + 0x10]
lea ecx, [esp + 0x1c]
push eax
push ecx
push 0x457288
push ebp
mov dword [esp + 0x2c], ebx
call sub.VERSION.dll_VerQueryValueW
test eax, eax
je 0x43f023
mov edx, dword [esp + 0x1c]
xor ecx, ecx
mov ax, word [edx]
mov word [0x45c864], ax
mov edx, dword [0x45c864]
mov eax, 0x4597e2
mov di, word [eax + 2]
and edi, edx
cmp di, word [eax]
je 0x43f011
add eax, 6
inc ecx
cmp eax, 0x45987e
jb 0x43eff9
jmp 0x43f023
lea ecx, [ecx + ecx*2]
mov dx, word [ecx*2 + 0x4597e0]
mov word [0x45c864], dx
push ebp
call sub.MFC42u.DLL_operatordelete
add esp, 4
lea ecx, [esp + 0x20]
mov byte [esp + 0x360], bl
call sub.MFC42u.DLL_CString::CString
pop edi
cmp esi, ebx
pop ebp
je 0x43f049
push esi
call dword [sym.imp.ADVAPI32.dll_RegCloseKey]
mov ecx, dword [esp + 0x350]
pop esi
mov eax, 1
pop ebx
mov dword fs:[0], ecx
add esp, 0x354
ret