Function at 0x423b60
Capabilities:
Check os version
Query environment variable
Query or enumerate registry value

Disassembly:
push ebp
mov ebp, esp
sub esp, 0x230
mov eax, dword [0x4a3110]
xor eax, ebp
mov dword [ebp - 4], eax
mov eax, dword [ebp + 8]
push ebx
push esi
mov dword [ebp - 0x228], ecx
mov ecx, dword [ebp + 0x10]
push edi
mov dword [ebp - 0x214], eax
xor edi, edi
mov ebx, edx
mov dword [ebp - 0x224], ecx
xor esi, esi
mov eax, 0x4a2ec8
lea esp, [esp]
cmp ebx, dword [eax]
je 0x423bb4
add eax, 0x14
inc esi
cmp eax, 0x4a2f90
jl 0x423ba0
jmp 0x423de8
cmp esi, 0xffffffff
je 0x423de8
mov dword [ebp - 0x21c], edi
mov dword [ebp - 0x210], edi
cmp ecx, 0xffffffff
je 0x423bf7
push str.Userenv.dll
call dword [sym.imp.KERNEL32.dll_LoadLibraryW]
mov dword [ebp - 0x210], eax
cmp eax, edi
je 0x423bf7
push str.ExpandEnvironmentStringsForUserW
mov edx, eax
push edx
call dword [sym.imp.KERNEL32.dll_GetProcAddress]
mov dword [ebp - 0x21c], eax
lea edi, [esi + esi*4]
add edi, edi
mov eax, dword [edi + edi + 0x4a2ed8]
add edi, edi
test eax, eax
je 0x423c7a
mov ecx, dword [ebp - 0x21c]
test ecx, ecx
je 0x423c48
mov edx, dword [ebp + 0xc]
push edx
mov edx, dword [ebp - 0x214]
push edx
push eax
mov eax, dword [ebp - 0x224]
push eax
call ecx
mov eax, dword [ebp - 0x210]
push eax
call dword [sym.imp.KERNEL32.dll_FreeLibrary]
pop edi
pop esi
xor eax, eax
pop ebx
mov ecx, dword [ebp - 4]
xor ecx, ebp
call fcn.0042b571
mov esp, ebp
pop ebp
ret
mov ecx, dword [ebp + 0xc]
mov edx, dword [ebp - 0x214]
push ecx
push edx
push eax
call dword [sym.imp.KERNEL32.dll_ExpandEnvironmentStringsW]
mov eax, dword [ebp - 0x210]
push eax
call dword [sym.imp.KERNEL32.dll_FreeLibrary]
pop edi
pop esi
xor eax, eax
pop ebx
mov ecx, dword [ebp - 4]
xor ecx, ebp
call fcn.0042b571
mov esp, ebp
pop ebp
ret
cmp ebx, 0x23
jne 0x423ccc
push 0x110
lea ecx, [ebp - 0x114]
push 0
push ecx
call fcn.0042b970
add esp, 0xc
lea edx, [ebp - 0x118]
push edx
mov dword [ebp - 0x118], 0x114
call dword [sym.imp.KERNEL32.dll_GetVersionExW]
cmp dword [ebp - 0x114], 6
jae 0x423ccc
mov eax, dword [str.SOFTWAREMicrosoftWindowsCurrentVersionExplorerUser_Shell_Folders]
mov ecx, dword [str.Common_AppData]
mov dword [edi + str.SoftwareMicrosoftWindowsCurrentVersionExplorerUser_Shell_Folders], eax
mov dword [edi + str.AppData], ecx
cmp dword [ebp + 0x14], 0
mov dword [ebp - 0x220], 0
jle 0x423dd7
mov ebx, dword [ebp - 0x228]
mov dword [ebp - 0x218], 0
mov eax, ebx
test ebx, ebx
jne 0x423cfc
mov eax, dword [edi + 0x4a2ecc]
mov ecx, dword [edi + 0x4a2ed0]
lea edx, [ebp - 0x218]
push edx
push 1
push 0
push ecx
push eax
call dword [sym.imp.ADVAPI32.dll_RegOpenKeyExW]
mov esi, eax
test esi, esi
jne 0x423d9e
xor edx, edx
push 0x206
push edx
lea eax, [ebp - 0x20a]
push eax
mov word [ebp - 0x20c], dx
call fcn.0042b970
mov eax, dword [edi + 0x4a2ed4]
add esp, 0xc
lea ecx, [ebp - 0x22c]
push ecx
mov ecx, dword [ebp - 0x218]
lea edx, [ebp - 0x20c]
push edx
push esi
push esi
push eax
push ecx
mov dword [ebp - 0x22c], 0x208
call dword [sym.imp.ADVAPI32.dll_RegQueryValueExW]
mov esi, eax
test esi, esi
jne 0x423d91
lea eax, [ebp - 0x20c]
lea edx, [eax + 2]
lea ebx, [ebx]
mov cx, word [eax]
add eax, 2
test cx, cx
jne 0x423d80
sub eax, edx
sar eax, 1
jne 0x423dfe
mov edx, dword [ebp - 0x218]
push edx
call dword [sym.imp.ADVAPI32.dll_RegCloseKey]
push 0x64
call dword [sym.imp.KERNEL32.dll_Sleep]
test ebx, ebx
je 0x423dc1
cmp dword [ebp - 0x220], 5
jle 0x423dc1
test esi, esi
je 0x423dc1
mov dword [ebp - 0x228], 0
mov eax, dword [ebp - 0x220]
inc eax
mov dword [ebp - 0x220], eax
cmp eax, dword [ebp + 0x14]
jl 0x423ce0
mov eax, dword [ebp - 0x210]
test eax, eax
je 0x423de8
push eax
call dword [sym.imp.KERNEL32.dll_FreeLibrary]
pop edi
pop esi
mov eax, 0x80004005
pop ebx
mov ecx, dword [ebp - 4]
xor ecx, ebp
call fcn.0042b571
mov esp, ebp
pop ebp
ret
mov eax, dword [ebp - 0x21c]
test eax, eax
je 0x423e25
mov ecx, dword [ebp + 0xc]
mov edx, dword [ebp - 0x214]
push ecx
push edx
mov edx, dword [ebp - 0x224]
lea ecx, [ebp - 0x20c]
push ecx
push edx
call eax
jmp 0x423e3d
mov eax, dword [ebp + 0xc]
mov ecx, dword [ebp - 0x214]
push eax
push ecx
lea edx, [ebp - 0x20c]
push edx
call dword [sym.imp.KERNEL32.dll_ExpandEnvironmentStringsW]
mov eax, dword [ebp - 0x218]
push eax
call dword [sym.imp.ADVAPI32.dll_RegCloseKey]
mov eax, dword [ebp - 0x210]
test eax, eax
je 0x423e5b
push eax
call dword [sym.imp.KERNEL32.dll_FreeLibrary]
mov ecx, dword [ebp - 4]
pop edi
pop esi
xor ecx, ebp
xor eax, eax
pop ebx
call fcn.0042b571
mov esp, ebp
pop ebp
ret