Function at 0x420af0
Capabilities:
Check if file exists
Get file attributes
Query environment variable

Disassembly:
push ebp
lea ebp, [esp - 0xa6c]
sub esp, 0xa6c
push 0xffffffffffffffff
push 0x5003e0
mov eax, dword fs:[0]
push eax
push ecx
mov eax, dword [0x5500a4]
xor eax, ebp
mov dword [ebp + 0xa68], eax
push ebx
push esi
push edi
push eax
lea eax, [ebp - 0xc]
mov dword fs:[0], eax
mov esi, ecx
mov ebx, dword [ebp + 0xa74]
test ebx, ebx
je 0x420b62
push dword [esi]
lea ecx, [ebp + 0x5c]
mov dword [ebp + 0x5c], 0
call fcn.0040eb00
mov dword [ebp - 4], 0
mov eax, dword [esi]
cmp byte [eax + 0x48], 0
jne 0x420b69
mov dword [ebp - 4], 0xffffffff
lea ecx, [ebp + 0x5c]
call fcn.0040eb20
xor al, al
jmp 0x420db6
push str.COMCTL32.DLL
mov dword [ebp + 0x54], 8
mov dword [ebp + 0x58], 0xff
call dword [sym.imp.KERNEL32.dll_LoadLibraryA]
mov edi, dword [sym.imp.KERNEL32.dll_GetProcAddress]
push 0x52b33c
push eax
call edi
test eax, eax
je 0x420b9a
lea ecx, [ebp + 0x54]
push ecx
call eax
push str.User32.dll
call dword [sym.imp.KERNEL32.dll_LoadLibraryA]
push 0x52b364
push eax
call edi
mov dword [ebp - 0x10], eax
test eax, eax
je 0x420c33
mov edi, dword [esi]
lea ecx, [edi + 0x64]
call fcn.0040a730
test al, al
jne 0x420c33
lea ecx, [edi + 0x4c]
call fcn.0040a730
test al, al
jne 0x420c33
lea eax, [edi + 0x64]
push eax
lea ecx, [ebp + 0x3c]
call fcn.0040a8b0
mov byte [ebp - 4], 1
push 0x52b3dc
call fcn.0040acf0
add esp, 4
lea ecx, [ebp + 0x3c]
push eax
push 0x52b3dc
call fcn.0040c160
push ebx
call fcn.0040acf0
add esp, 4
lea ecx, [ebp + 0x3c]
push eax
push ebx
call fcn.0040c160
mov ecx, dword [esi]
push 0
add ecx, 0x4c
call fcn.0040a750
push eax
lea ecx, [ebp + 0x3c]
call fcn.0040a750
push eax
push 0
call dword [ebp - 0x10]
mov byte [ebp - 4], 0
lea ecx, [ebp + 0x3c]
call fcn.0040a7c0
push 0x208
lea eax, [ebp + 0x860]
push 0
push eax
call fcn.004d9580
mov ebx, dword [esi]
add esp, 0xc
lea ecx, [ebx + 0x7c]
call fcn.0040a750
mov edi, eax
lea edx, [ebp + 0x860]
mov eax, edx
mov esi, 0x103
sub edi, eax
lea ecx, [esi + 0x7ffffefb]
test ecx, ecx
je 0x420c82
movzx eax, word [edi + edx]
test ax, ax
je 0x420c82
mov word [edx], ax
add edx, 2
sub esi, 1
jne 0x420c64
test esi, esi
lea eax, [edx - 2]
cmovne eax, edx
xor ecx, ecx
mov word [eax], cx
cmp word [ebp + 0x860], cx
je 0x420da5
cmp byte [ebx + 0x94], cl
je 0x420cbd
lea ecx, [ebp + 0x860]
call fcn.00422520
xor eax, eax
mov word [ebp + 0x860], ax
jmp 0x420da5
push 0x800
lea eax, [ebp + 0x60]
push 0
push eax
call fcn.004d9580
mov edi, dword [sym.imp.KERNEL32.dll_ExpandEnvironmentStringsW]
lea eax, [ebp + 0x60]
add esp, 0xc
push 0x3fe
push eax
push str._programfiles_Internet_Exploreriexplore.exe
call edi
mov esi, dword [sym.imp.KERNEL32.dll_GetFileAttributesW]
dec eax
cmp eax, 0x3fd
ja 0x420d03
lea eax, [ebp + 0x60]
push eax
call esi
cmp eax, 0xffffffff
je 0x420d03
test al, 0x10
je 0x420d2e
push 0x3fe
lea eax, [ebp + 0x60]
push eax
push str._programfiles_x86__Internet_Exploreriexplore.exe
call edi
dec eax
cmp eax, 0x3fd
ja 0x420da5
lea eax, [ebp + 0x60]
push eax
call esi
cmp eax, 0xffffffff
je 0x420da5
test al, 0x10
jne 0x420da5
lea eax, [ebp + 0x60]
mov dword [ebp], 0x3c
xorps xmm0, xmm0
mov dword [ebp + 0x10], eax
lea eax, [ebp + 0x860]
movlpd qword [ebp + 0x20], xmm0
push str.Shell32.dll
movlpd qword [ebp + 0x28], xmm0
movlpd qword [ebp + 0x30], xmm0
mov dword [ebp + 4], 0
mov dword [ebp + 8], 0
mov dword [ebp + 0xc], 0
mov dword [ebp + 0x14], eax
mov dword [ebp + 0x18], 0
mov dword [ebp + 0x1c], 1
mov dword [ebp + 0x38], 0
call dword [sym.imp.KERNEL32.dll_LoadLibraryA]
test eax, eax
je 0x420da5
push 0x52aa24
push eax
call dword [sym.imp.KERNEL32.dll_GetProcAddress]
test eax, eax
je 0x420da5
lea ecx, [ebp]
push ecx
call eax
mov dword [ebp - 4], 0xffffffff
lea ecx, [ebp + 0x5c]
call fcn.0040eb20
mov al, 1
mov ecx, dword [ebp - 0xc]
mov dword fs:[0], ecx
pop ecx
pop edi
pop esi
pop ebx
mov ecx, dword [ebp + 0xa68]
xor ecx, ebp
call fcn.004d6ca5
lea esp, [ebp + 0xa6c]
pop ebp
ret 4