Function at 0x421f27
Capabilities:
Check os version
Delete registry value
Persist via run registry key

Disassembly:
push 0x780
mov eax, 0x464160
call fcn.0043f4b0
mov edi, ecx
mov esi, dword [ebp + 0xc]
mov eax, dword [ebp + 0x14]
mov dword [ebp - 0x770], eax
lea eax, [esi + 4]
xor ebx, ebx
cmp dword [eax + 0x14], 8
mov dword [ebp - 0x758], esi
mov dword [ebp - 0x780], ebx
jb 0x421f5d
mov eax, dword [eax]
push eax
lea eax, [ebp - 0x760]
push str.Running_setup_prerequisites___s_...
push eax
mov dword [ebp - 0x760], 0x46d350
mov dword [ebp - 0x75c], 0x36
call fcn.0040b1f6
add esp, 0xc
lea eax, [ebp - 0x100]
push 0x64c
push eax
mov eax, dword [edi]
mov ecx, edi
call dword [eax + 0x2c]
mov ecx, eax
call fcn.0040a0a3
cmp dword [ebp - 0xe8], 8
lea eax, [ebp - 0xfc]
cmovae eax, dword [ebp - 0xfc]
push eax
push ebx
push 0xc
push 0x3eb
push dword [0x48532c]
mov dword [ebp - 4], ebx
call dword [sym.imp.USER32.dll_SendDlgItemMessageW]
push ebx
lea eax, [ebp - 0x751]
push eax
lea ecx, [ebp - 0xd0]
mov dword [ebp - 0xd0], 0x46be90
mov dword [ebp - 0xa8], 0x46c540
call fcn.004033a0
lea eax, [ebp - 0x40]
push eax
mov eax, dword [edi]
mov ecx, edi
mov byte [ebp - 4], 1
call dword [eax + 0x2c]
mov ecx, eax
call fcn.0040a007
add eax, 4
mov byte [ebp - 4], 2
cmp dword [eax + 0x14], 8
jb 0x422018
mov eax, dword [eax]
push eax
lea eax, [ebp - 0xd0]
push str.__IS_PREREQ____s
push eax
call fcn.0040aaa7
add esp, 0xc
lea ecx, [ebp - 0x40]
call fcn.00401500
push ebx
lea eax, [ebp - 0x751]
push eax
lea ecx, [ebp - 0xa0]
mov dword [ebp - 0xa0], 0x46be90
mov dword [ebp - 0x78], 0x46c540
call fcn.004033a0
lea eax, [ebp - 0x40]
push eax
mov eax, dword [edi]
mov ecx, edi
mov byte [ebp - 4], 3
call dword [eax + 0x2c]
mov ecx, eax
call fcn.0040a007
add eax, 4
mov byte [ebp - 4], 4
cmp dword [eax + 0x14], 8
jb 0x42207e
mov eax, dword [eax]
push eax
lea eax, [ebp - 0xa0]
push str.__IS_PREREQF____s
push eax
call fcn.0040aaa7
add esp, 0xc
lea ecx, [ebp - 0x40]
call fcn.00401500
mov dword [ebp - 0x76c], ebx
mov dword [ebp - 0x768], ebx
mov dword [ebp - 0x764], ebx
mov eax, dword [edi]
mov ecx, edi
mov byte [ebp - 4], 5
mov dword [ebp - 0x77c], ebx
call dword [eax]
test eax, eax
jne 0x4222df
push 0x2001f
push str.SoftwareMicrosoftWindowsCurrentVersion
push SysFreeString
lea ecx, [ebp - 0x76c]
call fcn.004013d0
mov dword [ebp - 0x77c], eax
cmp dword [esi + 0x14], ebx
jne 0x422201
test eax, eax
jne 0x422201
push ebx
lea eax, [ebp - 0x751]
push eax
lea ecx, [ebp - 0x70]
mov dword [ebp - 0x70], 0x46be90
mov dword [ebp - 0x48], 0x46c540
call fcn.004033a0
push 0x105
lea eax, [ebp - 0x78c]
push eax
lea ecx, [ebp - 0x70]
mov byte [ebp - 4], 6
mov dword [ebp - 0x75c], 0x104
call fcn.0040756b
mov ecx, dword [eax]
mov byte [ebp - 4], 7
mov byte [eax + 4], 1
call fcn.00407510
cmp dword [ebp - 0x88], 8
lea edx, [ebp - 0x75c]
push edx
push dword [eax]
lea ecx, [ebp - 0x9c]
cmovae ecx, dword [ebp - 0x9c]
push ecx
lea ecx, [ebp - 0x76c]
call fcn.00401480
lea ecx, [ebp - 0x78c]
mov esi, eax
mov byte [ebp - 4], 6
call fcn.00406b4c
test esi, esi
jne 0x4221f3
mov eax, dword [edi]
push ebx
lea ecx, [ebp - 0x70]
push ecx
push 0x11
mov ecx, edi
call dword [eax + 0x18]
cmp dword [ebp - 0x88], 8
lea eax, [ebp - 0x9c]
cmovae eax, dword [ebp - 0x9c]
push eax
push dword [ebp - 0x76c]
call dword [sym.imp.ADVAPI32.dll_RegDeleteValueW]
mov esi, dword [ebp - 0x758]
cmp dword [esi + 0x14], ebx
jne 0x4221f9
push ebx
lea eax, [ebp - 0x774]
push str.Prerequisites_returning__d
push eax
mov dword [ebp - 0x774], 0x46d350
mov dword [ebp - 0x770], 0x5a
call fcn.0040b1f6
add esp, 0xc
lea ecx, [ebp - 0x70]
call fcn.00401500
jmp 0x422692
mov esi, dword [ebp - 0x758]
lea ecx, [ebp - 0x70]
call fcn.00401500
push ebx
lea eax, [ebp - 0x751]
push eax
lea ecx, [ebp - 0x40]
mov dword [ebp - 0x40], 0x46be90
mov dword [ebp - 0x18], 0x46c540
call fcn.004033a0
push 0x105
lea eax, [ebp - 0x78c]
push eax
lea ecx, [ebp - 0x40]
mov byte [ebp - 4], 8
mov dword [ebp - 0x75c], 0x104
call fcn.0040756b
mov ecx, dword [eax]
mov byte [ebp - 4], 9
mov byte [eax + 4], 1
call fcn.00407510
cmp dword [ebp - 0xb8], 8
lea edx, [ebp - 0x75c]
push edx
push dword [eax]
lea ecx, [ebp - 0xcc]
cmovae ecx, dword [ebp - 0xcc]
push ecx
lea ecx, [ebp - 0x76c]
call fcn.00401480
mov ebx, eax
neg ebx
lea ecx, [ebp - 0x78c]
sbb bl, bl
mov byte [ebp - 4], 8
call fcn.00406b4c
inc bl
je 0x4222d1
push 0xa
lea eax, [ebp - 0x75c]
push eax
lea ecx, [ebp - 0x40]
call fcn.0042d4e2
mov eax, dword [edi]
push dword [ebp - 0x75c]
mov ecx, edi
call dword [eax + 0x20]
cmp dword [ebp - 0xb8], 8
lea eax, [ebp - 0xcc]
cmovae eax, dword [ebp - 0xcc]
push eax
push dword [ebp - 0x76c]
call dword [sym.imp.ADVAPI32.dll_RegDeleteValueW]
lea ecx, [ebp - 0x40]
mov byte [ebp - 4], 5
call fcn.00401500
xor ebx, ebx
lea eax, [ebp - 0x752]
push eax
lea eax, [ebp - 0x751]
push eax
sub esp, 0x30
mov ecx, esp
push ebx
push esi
mov dword [ecx], 0x46be90
mov dword [ecx + 0x28], 0x46c540
call fcn.004043c0
mov ecx, edi
call fcn.00421732
test al, al
je 0x4225bd
mov eax, dword [edi]
mov ecx, edi
call dword [eax]
cmp eax, 1
jne 0x422454
mov eax, dword [edi]
push 0xe
mov ecx, edi
call dword [eax + 0x28]
test al, al
je 0x422454
mov eax, dword [edi + 8]
mov esi, dword [eax]
mov dword [ebp - 0x758], esi
cmp esi, eax
je 0x4225bd
mov eax, dword [edi]
push ebx
mov ecx, edi
call dword [eax + 0x2c]
push eax
push ebx
push ebx
lea ecx, [ebp - 0x750]
call fcn.00424051
push ebx
lea eax, [ebp - 0x751]
push eax
push 0x476040
lea ecx, [ebp - 0x40]
mov byte [ebp - 4], 0xa
mov dword [ebp - 0x40], 0x46be90
mov dword [ebp - 0x18], 0x46c540
call fcn.00403400
add esi, 0x1c
mov byte [ebp - 4], 0xb
cmp dword [esi + 0x14], 8
jb 0x422394
mov esi, dword [esi]
lea eax, [ebp - 0x40]
push eax
push ebx
push esi
lea ecx, [ebp - 0x750]
call fcn.004298e8
lea ecx, [ebp - 0x40]
mov byte [ebp - 4], 0xa
call fcn.00401500
push edi
lea ecx, [ebp - 0x2d8]
call fcn.0040b068
mov eax, dword [edi]
push 0xe
lea ecx, [ebp - 0x130]
push ecx
mov ecx, edi
mov byte [ebp - 4], 0xc
call dword [eax + 0x1c]
lea ecx, [ebp - 0x70]
push ecx
mov ecx, eax
mov byte [ebp - 4], 0xd
call fcn.0040f3ea
push ebx
push eax
lea eax, [ebp - 0x750]
push eax
lea eax, [ebp - 0x40]
push eax
lea ecx, [ebp - 0x2d8]
mov byte [ebp - 4], 0xe
call fcn.0040c002
lea ecx, [ebp - 0x40]
call fcn.00401500
lea ecx, [ebp - 0x70]
call fcn.00401500
lea ecx, [ebp - 0x130]
call fcn.00401500
lea ecx, [ebp - 0x2d8]
mov byte [ebp - 4], 0xa
call fcn.0040b17a
lea ecx, [ebp - 0x750]
mov byte [ebp - 4], 5
call fcn.004245af
lea ecx, [ebp - 0x758]
call fcn.00424885
mov esi, dword [ebp - 0x758]
cmp esi, dword [edi + 8]
jne 0x422348
jmp 0x4225bd
mov eax, dword [edi]
mov ecx, edi
call dword [eax]
test eax, eax
jne 0x4225bd
push edi
lea ecx, [ebp - 0x2d8]
call fcn.0040b068
mov eax, dword [ebp + 8]
mov dword [ebp - 0x1b4], eax
mov al, byte [ebp + 0x10]
mov byte [ebp - 4], 0xf
mov byte [ebp - 0x1b0], al
call fcn.00434769
cmp eax, 6
jb 0x4224ac
cmp byte [ebp - 0x751], 0
je 0x4224ac
call fcn.0043ae44
test al, al
jne 0x4224ac
mov byte [ebp - 0x1af], 1
jmp 0x422569
mov al, byte [ebp - 0x752]
mov byte [ebp - 0x1af], bl
test al, al
jne 0x42256f
mov eax, dword [edi]
push 0x10
mov ecx, edi
call dword [eax + 0x28]
test al, al
jne 0x422569
mov eax, dword [edi]
mov ecx, edi
call dword [eax + 0x34]
test eax, eax
jne 0x4224e3
push 2
jmp 0x422746
cmp byte [0x485248], 0
jne 0x4224f5
cmp byte [0x4868e4], 0
je 0x422569
push ebx
lea eax, [ebp - 0x751]
push eax
push 0x46d350
lea ecx, [ebp - 0x70]
mov dword [ebp - 0x70], 0x46be90
mov dword [ebp - 0x48], 0x46c540
call fcn.00403400
push ebx
lea eax, [ebp - 0x751]
push eax
push str.Showing_initialization_dialog_for_prerequisites.
lea ecx, [ebp - 0x40]
mov byte [ebp - 4], 0x10
mov dword [ebp - 0x40], 0x46be90
mov dword [ebp - 0x18], 0x46c540
call fcn.00403400
push 0x8d
lea eax, [ebp - 0x70]
push eax
lea eax, [ebp - 0x40]
push eax
mov byte [ebp - 4], 0x11
call fcn.00402270
lea ecx, [ebp - 0x40]
call fcn.00401500
lea ecx, [ebp - 0x70]
mov byte [ebp - 4], 0xf
call fcn.00401500
mov al, byte [ebp - 0x752]
push dword [ebp - 0x770]
test al, al
sete al
movzx eax, al
push eax
mov eax, dword [edi]
push esi
mov ecx, edi
call dword [eax + 0x2c]
lea ecx, [ebp - 0x2d8]
push dword [eax + 0x20]
call fcn.0040b47d
push 2
pop ecx
sub eax, ecx
je 0x4225a8
sub eax, 5
je 0x4226c8
sub eax, ecx
jne 0x4225ae
mov dword [ebp - 0x780], ecx
lea ecx, [ebp - 0x2d8]
mov byte [ebp - 4], 5
call fcn.0040b17a
mov eax, dword [edi]
mov ecx, edi
call dword [eax]
test eax, eax
jne 0x422663
cmp dword [ebp - 0x77c], eax
jne 0x422611
cmp dword [ebp - 0xb8], 8
mov esi, dword [ebp - 0x76c]
lea eax, [ebp - 0xcc]
cmovae eax, dword [ebp - 0xcc]
push eax
push esi
call dword [sym.imp.ADVAPI32.dll_RegDeleteValueW]
cmp dword [ebp - 0x88], 8
lea eax, [ebp - 0x9c]
cmovae eax, dword [ebp - 0x9c]
push eax
push esi
call dword [sym.imp.ADVAPI32.dll_RegDeleteValueW]
cmp byte [ebp + 0x10], 0
je 0x422663
push 0x2001f
push str.SoftwareMicrosoftWindowsCurrentVersionRunOnce
push SysFreeString
lea ecx, [ebp - 0x76c]
mov dword [ebp - 0x778], ebx
mov dword [ebp - 0x774], ebx
mov dword [ebp - 0x770], ebx
call fcn.004013d0
test eax, eax
jne 0x422658
push str.__ISSetupPrerequisistes
push dword [ebp - 0x76c]
call dword [sym.imp.ADVAPI32.dll_RegDeleteValueW]
lea ecx, [ebp - 0x778]
call fcn.004013a0
mov ebx, dword [ebp - 0x780]
push ebx
lea eax, [ebp - 0x774]
push str.Prerequisites_returning__d
push eax
mov dword [ebp - 0x774], 0x46d350
mov dword [ebp - 0x770], 0xb3
call fcn.0040b1f6
add esp, 0xc
lea ecx, [ebp - 0x76c]
call fcn.004013a0
lea ecx, [ebp - 0xa0]
call fcn.00401500
lea ecx, [ebp - 0xd0]
call fcn.00401500
lea ecx, [ebp - 0x100]
call fcn.00401500
mov eax, ebx
call fcn.0043f45f
ret 0x10
cmp byte [0x485248], 0
jne 0x4226da
cmp byte [0x4868e4], 0
je 0x422744
push ebx
lea eax, [ebp - 0x751]
push eax
mov esi, 0x46be90
mov edi, 0x46c540
push 0x46d350
lea ecx, [ebp - 0x70]
mov dword [ebp - 0x70], esi
mov dword [ebp - 0x48], edi
call fcn.00403400
push ebx
lea eax, [ebp - 0x751]
push eax
push str.Prerequisites_rebooting
lea ecx, [ebp - 0x40]
mov byte [ebp - 4], 0x12
mov dword [ebp - 0x40], esi
mov dword [ebp - 0x18], edi
call fcn.00403400
push 0x96
lea eax, [ebp - 0x70]
push eax
lea eax, [ebp - 0x40]
push eax
mov byte [ebp - 4], 0x13
call fcn.00402270
lea ecx, [ebp - 0x40]
call fcn.00401500
lea ecx, [ebp - 0x70]
call fcn.00401500
push 7
pop ebx
lea ecx, [ebp - 0x2d8]
mov byte [ebp - 4], 5
call fcn.0040b17a
jmp 0x422692