Function at 0x41a660
Capabilities:
Check os version
Create directory
Delete file
Get common file path
Get startup folder
Persist via run registry key
Query or enumerate registry value
Set registry value

Disassembly:
push ebp
mov ebp, esp
push 0xffffffffffffffff
push 0x4928db
mov eax, dword fs:[0]
push eax
sub esp, 0x47c
mov eax, dword [0x4b33c0]
xor eax, ebp
mov dword [ebp - 0x10], eax
push ebx
push eax
lea eax, [ebp - 0xc]
mov dword fs:[0], eax
lea eax, [ebp - 0x478]
push eax
push 0x101
push 0
push str.SOFTWAREMicrosoftCryptography
push reloc.WS2_32.dll_bind
call dword [sym.imp.ADVAPI32.dll_RegOpenKeyExA]
test eax, eax
je 0x41a6c6
push 0
push 0
push str.GetGUID_err1
call fcn.00412140
add esp, 0xc
xor al, al
jmp 0x41ab51
mov dword [ebp - 0x47c], 0x28
mov ecx, dword [ebp - 0x47c]
push ecx
push 0
lea edx, [ebp - 0x38]
push edx
call fcn.0046f9a0
add esp, 0xc
lea eax, [ebp - 0x47c]
push eax
lea ecx, [ebp - 0x38]
push ecx
push 0
push 0
push str.MachineGuid
mov edx, dword [ebp - 0x478]
push edx
call dword [sym.imp.ADVAPI32.dll_RegQueryValueExA]
mov eax, dword [ebp - 0x478]
push eax
call dword [sym.imp.ADVAPI32.dll_RegCloseKey]
lea ecx, [ebp - 0x38]
mov dword [ebp - 0x474], ecx
mov dword [ebp - 0x470], 0
jmp 0x41a737
mov edx, dword [ebp - 0x470]
add edx, 1
mov dword [ebp - 0x470], edx
cmp dword [ebp - 0x470], 0x20
jge 0x41a84b
mov eax, dword [ebp - 0x474]
movsx ecx, byte [eax]
cmp ecx, 0x2d
jne 0x41a761
mov edx, dword [ebp - 0x474]
add edx, 1
mov dword [ebp - 0x474], edx
mov eax, dword [ebp - 0x474]
mov cl, byte [eax]
mov byte [ebp - 0x469], cl
mov edx, dword [ebp - 0x474]
add edx, 1
mov dword [ebp - 0x474], edx
mov byte [ebp - 0x46a], 0
movsx eax, byte [ebp - 0x469]
cmp eax, 0x30
jl 0x41a7af
movsx ecx, byte [ebp - 0x469]
cmp ecx, 0x39
jg 0x41a7af
movsx edx, byte [ebp - 0x469]
sub edx, 0x30
mov byte [ebp - 0x46a], dl
jmp 0x41a7f2
movsx eax, byte [ebp - 0x469]
cmp eax, 0x61
jl 0x41a7c7
movsx ecx, byte [ebp - 0x469]
cmp ecx, 0x66
jle 0x41a7df
movsx edx, byte [ebp - 0x469]
cmp edx, 0x41
jl 0x41a7f2
movsx eax, byte [ebp - 0x469]
cmp eax, 0x46
jg 0x41a7f2
movsx ecx, byte [ebp - 0x469]
and ecx, 0xf
add ecx, 9
mov byte [ebp - 0x46a], cl
mov edx, dword [ebp - 0x470]
and edx, 1
je 0x41a82b
movzx ecx, byte [ebp - 0x46a]
mov eax, dword [ebp - 0x470]
cdq
sub eax, edx
sar eax, 1
movzx ebx, byte [eax + 0x4d5dd8]
or ebx, ecx
mov eax, dword [ebp - 0x470]
cdq
sub eax, edx
sar eax, 1
mov byte [eax + 0x4d5dd8], bl
jmp 0x41a846
movzx ecx, byte [ebp - 0x46a]
shl ecx, 4
mov eax, dword [ebp - 0x470]
cdq
sub eax, edx
sar eax, 1
mov byte [eax + 0x4d5dd8], cl
jmp 0x41a728
call fcn.004021c0
movzx edx, al
test edx, edx
jne 0x41a86f
push 0
push 0
push str.Dll_is_not_installed
call fcn.00412140
add esp, 0xc
xor al, al
jmp 0x41ab51
call fcn.0041bb10
movzx eax, al
test eax, eax
jne 0x41a893
push 0
push 0
push str.Config_installation_failed
call fcn.00412140
add esp, 0xc
xor al, al
jmp 0x41ab51
lea ecx, [ebp - 0x478]
push ecx
push 3
push 0
push str.SoftwareMicrosoftWindowsCurrentVersionRun
push reloc.WS2_32.dll_bind
call dword [sym.imp.ADVAPI32.dll_RegOpenKeyExW]
test eax, eax
jne 0x41a905
push 0x4d54d8
call fcn.00471a21
add esp, 4
lea edx, [eax + eax + 2]
mov dword [ebp - 0x480], edx
mov eax, dword [ebp - 0x478]
mov dword [ebp - 0x484], eax
mov ecx, dword [ebp - 0x480]
push ecx
push 0x4d54d8
push 1
push 0
push 0x49858c
mov edx, dword [ebp - 0x484]
push edx
call dword [sym.imp.ADVAPI32.dll_RegSetValueExW]
mov eax, dword [ebp - 0x478]
push eax
call dword [sym.imp.ADVAPI32.dll_RegCloseKey]
nop
push 0
push 0x18
lea ecx, [ebp - 0x238]
push ecx
push 0
call dword [sym.imp.SHELL32.dll_SHGetSpecialFolderPathW]
push 0x49859c
push 0x100
lea edx, [ebp - 0x238]
push edx
call fcn.00473149
add esp, 0xc
lea eax, [ebp - 0x238]
push eax
call dword [sym.imp.KERNEL32.dll_DeleteFileW]
push 0
push 0x17
lea ecx, [ebp - 0x238]
push ecx
push 0
call dword [sym.imp.SHELL32.dll_SHGetSpecialFolderPathW]
push 0x4985b8
push 0x100
lea edx, [ebp - 0x238]
push edx
call fcn.00473149
add esp, 0xc
push 0
lea eax, [ebp - 0x238]
push eax
call dword [sym.imp.KERNEL32.dll_CreateDirectoryW]
push str.VKSaver.lnk
lea ecx, [ebp - 0x238]
push ecx
push 0x4985e4
lea edx, [ebp - 0x438]
push edx
call dword [sym.imp.USER32.dll_wsprintfW]
add esp, 0x10
lea eax, [ebp - 0x438]
push eax
call dword [sym.imp.KERNEL32.dll_DeleteFileW]
push str.Launch_VKSaver.lnk
lea ecx, [ebp - 0x238]
push ecx
push 0x498618
lea edx, [ebp - 0x438]
push edx
call dword [sym.imp.USER32.dll_wsprintfW]
add esp, 0x10
push 0xffffffffffffff95
push 0x498624
lea eax, [ebp - 0x438]
push eax
push 0x498628
push 0x4d54d8
call fcn.00419c80
add esp, 0x14
push str.Uninstall.lnk
lea ecx, [ebp - 0x238]
push ecx
push 0x498668
lea edx, [ebp - 0x438]
push edx
call dword [sym.imp.USER32.dll_wsprintfW]
add esp, 0x10
push 0xffffff78
push str._uninstall
lea eax, [ebp - 0x438]
push eax
push 0x49868c
push 0x4d54d8
call fcn.00419c80
add esp, 0x14
call dword [sym.imp.KERNEL32.dll_GetVersion]
and eax, 0xff
mov dword [ebp - 0x488], eax
cmp dword [ebp - 0x488], 6
jb 0x41aa74
movzx ecx, byte [ebp + 8]
push ecx
call fcn.0041abe0
add esp, 4
movzx edx, al
test edx, edx
jne 0x41aa72
push 0
push 0
push str.Install_for_Vista_failed
call fcn.00412140
add esp, 0xc
xor al, al
jmp 0x41ab51
jmp 0x41aaa0
movzx eax, byte [ebp + 8]
push eax
call fcn.0041b350
add esp, 4
movzx ecx, al
test ecx, ecx
jne 0x41aaa0
push 0
push 0
push str.Install_for_XP_failed
call fcn.00412140
add esp, 0xc
xor al, al
jmp 0x41ab51
push 0x4d54d8
lea ecx, [ebp - 0x468]
call fcn.00405690
mov dword [ebp - 4], 0
push 0x4b3014
lea ecx, [ebp - 0x450]
call fcn.00405690
mov byte [ebp - 4], 1
lea edx, [ebp - 0x468]
push edx
lea eax, [ebp - 0x450]
push eax
call fcn.00412e50
add esp, 8
mov byte [ebp - 4], 0
lea ecx, [ebp - 0x450]
call fcn.004070e0
mov dword [ebp - 4], 0xffffffff
lea ecx, [ebp - 0x468]
call fcn.004070e0
nop
movzx ecx, byte [ebp + 0xc]
test ecx, ecx
je 0x41ab4f
movzx edx, byte [0x4d5094]
test edx, edx
je 0x41ab35
push str._popup
push 0x4d54d8
call fcn.00419d90
add esp, 8
movzx eax, al
test eax, eax
jne 0x41ab33
xor al, al
jmp 0x41ab51
jmp 0x41ab4f
push 0
push 0x4d54d8
call fcn.00419d90
add esp, 8
movzx ecx, al
test ecx, ecx
jne 0x41ab4f
xor al, al
jmp 0x41ab51
mov al, 1
mov ecx, dword [ebp - 0xc]
mov dword fs:[0], ecx
pop ecx
pop ebx
mov ecx, dword [ebp - 0x10]
xor ecx, ebp
call fcn.0046c5de
mov esp, ebp
pop ebp
ret