Function at 0x4391e0
Capabilities:
Check if file exists
Check os version
Get file attributes
Persist via run registry key
Query or enumerate registry value

Disassembly:
mov eax, dword fs:[0]
push 0xffffffffffffffff
push 0x5c2d83
push eax
mov eax, dword [0x691b84]
mov dword fs:[0], esp
sub esp, 0x2e8
push ebx
push ebp
push esi
xor esi, esi
cmp eax, esi
push edi
jne 0x439217
call fcn.00437180
test al, al
je 0x4398c0
mov ecx, 0x82
xor eax, eax
lea edi, [esp + 0xf0]
mov edx, dword [0x691b84]
rep stosd dword es:[edi], eax
mov ebx, dword [sym.imp.ADVAPI32.dll_RegQueryValueExA]
lea eax, [esp + 0x18]
lea ecx, [esp + 0xf0]
push eax
push ecx
push esi
push esi
push str.LocalPathW
push edx
mov dword [esp + 0x30], 0x208
call ebx
test eax, eax
jne 0x439271
mov ecx, dword [esp + 0x308]
lea eax, [esp + 0xf0]
push eax
call fcn.00401ee0
mov al, 1
jmp 0x4398c2
mov ecx, dword [0x68d01c]
mov dword [esp + 0x28], ecx
mov eax, dword [0x691b84]
lea edx, [esp + 0x18]
push edx
push esi
push esi
push esi
push 0x669e3c
push eax
mov dword [esp + 0x318], esi
call ebx
test eax, eax
jne 0x4392ed
mov ecx, dword [esp + 0x18]
push ecx
lea ecx, [esp + 0x2c]
call fcn.005ae01a
lea edx, [esp + 0x18]
mov edi, eax
mov eax, dword [0x691b84]
push edx
push edi
push esi
push esi
push 0x669e3c
push eax
call ebx
test eax, eax
jne 0x4392ed
mov ecx, dword [esp + 0x308]
push esi
push edi
call fcn.00402800
lea ecx, [esp + 0x28]
mov dword [esp + 0x300], 0xffffffff
call fcn.005adc4d
mov al, 1
jmp 0x4398c2
lea ecx, [esp + 0x5c]
mov dword [esp + 0x5c], 0x94
push ecx
call dword [sym.imp.KERNEL32.dll_GetVersionExA]
mov ebx, dword [esp + 0x308]
test eax, eax
je 0x439559
cmp dword [esp + 0x6c], 2
jne 0x439559
cmp dword [esp + 0x60], 6
jb 0x439559
push str.shell32
call dword [sym.imp.KERNEL32.dll_LoadLibraryA]
mov ebp, eax
cmp ebp, esi
mov dword [esp + 0x3c], ebp
je 0x439559
push str.SHGetKnownFolderPath
push ebp
mov byte [esp + 0x1b], 0
call dword [sym.imp.KERNEL32.dll_GetProcAddress]
mov edi, eax
cmp edi, esi
je 0x43952f
push esi
mov dword [esp + 0x18], esi
mov dword [esp + 0x44], 0x374de290
mov word [esp + 0x48], 0x123f
mov word [esp + 0x4a], 0x4565
mov byte [esp + 0x4c], 0x91
mov byte [esp + 0x4d], 0x64
mov byte [esp + 0x4e], 0x39
mov byte [esp + 0x4f], 0xc4
mov byte [esp + 0x50], 0x92
mov byte [esp + 0x51], 0x5e
mov byte [esp + 0x52], 0x46
mov byte [esp + 0x53], 0x7b
call dword [sym.imp.ole32.dll_CoInitialize]
lea edx, [esp + 0x14]
lea eax, [esp + 0x40]
push edx
push esi
push esi
push eax
call edi
cmp eax, esi
jne 0x439529
mov eax, dword [esp + 0x14]
cmp eax, esi
je 0x439529
push eax
call fcn.00591712
mov ebp, dword [esp + 0x18]
add esp, 4
mov edi, 0x69156c
cmp word [ebp + eax*2 - 2], 0x5c
je 0x4393e3
mov edi, 0x665ffc
mov ecx, 0x665ff4
test ecx, ecx
je 0x439519
cmp ebp, esi
je 0x439519
cmp edi, esi
je 0x439519
push esi
push ecx
lea ecx, [esp + 0x24]
mov dword [esp + 0x24], esi
mov dword [esp + 0x2c], esi
mov word [esp + 0x28], si
call fcn.00402800
push ebp
lea ecx, [esp + 0x30]
mov byte [esp + 0x304], 1
mov dword [esp + 0x30], esi
mov dword [esp + 0x38], esi
mov word [esp + 0x34], si
call fcn.00401ee0
push edi
lea ecx, [esp + 0x54]
mov byte [esp + 0x304], 2
call fcn.00403af0
mov ecx, ebx
mov byte [esp + 0x300], 3
call fcn.00401070
mov esi, dword [esp + 0x24]
lea ecx, [esp + 0x50]
call fcn.00401ed0
push eax
call fcn.00591712
add esp, 4
lea ecx, [esp + 0x2c]
mov edi, eax
call fcn.00401ed0
push eax
call fcn.00591712
add esi, edi
lea esi, [eax + esi + 3]
lea ebp, [esi + esi]
push ebp
call fcn.005a9fe9
mov edi, eax
add esp, 8
test edi, edi
mov dword [ebx], edi
je 0x4394e0
mov ecx, ebp
xor eax, eax
mov edx, ecx
shr ecx, 2
rep stosd dword es:[edi], eax
mov ecx, edx
and ecx, 3
rep stosb byte es:[edi], al
lea ecx, [esp + 0x50]
call fcn.00401ed0
push eax
lea ecx, [esp + 0x30]
call fcn.00401ed0
push eax
lea ecx, [esp + 0x24]
call fcn.00401ed0
push eax
mov eax, dword [ebx]
push esi
push eax
call fcn.005916a2
mov ecx, dword [ebx]
push ecx
call fcn.00591712
add esp, 0x18
mov dword [ebx + 8], eax
lea ecx, [esp + 0x50]
mov byte [esp + 0x300], 2
call fcn.00401070
lea ecx, [esp + 0x2c]
mov byte [esp + 0x300], 1
call fcn.00401070
lea ecx, [esp + 0x1c]
mov byte [esp + 0x300], 0
call fcn.00401070
mov ebp, dword [esp + 0x14]
xor esi, esi
push ebp
call dword [sym.imp.ole32.dll_CoTaskMemFree]
mov ebp, dword [esp + 0x3c]
mov byte [esp + 0x13], 1
call dword [sym.imp.ole32.dll_CoUninitialize]
push ebp
call dword [sym.imp.KERNEL32.dll_FreeLibrary]
mov al, byte [esp + 0x13]
test al, al
je 0x439559
lea ecx, [esp + 0x28]
mov dword [esp + 0x300], 0xffffffff
call fcn.005adc4d
mov al, 1
jmp 0x4398c2
lea edx, [esp + 0x38]
push edx
push 0xf003f
push esi
push str.SoftwareMicrosoftWindowsCurrentVersionExplorerShell_Folders_
push reloc.WSOCK32.dll_accept
call dword [sym.imp.ADVAPI32.dll_RegOpenKeyExA]
test eax, eax
jne 0x4398ac
mov ecx, dword [esp + 0x38]
mov edi, dword [sym.imp.ADVAPI32.dll_RegQueryValueExW]
lea eax, [esp + 0x18]
push eax
push esi
push esi
push esi
push str.Personal
push ecx
call edi
test eax, eax
jne 0x4398a1
mov edx, dword [esp + 0x18]
lea eax, [edx*4 + 4]
push eax
call fcn.005a9fe9
mov ebp, eax
add esp, 4
cmp ebp, esi
je 0x4398a1
mov edx, dword [esp + 0x38]
lea ecx, [esp + 0x18]
push ecx
push ebp
push esi
push esi
push str.Personal
push edx
call edi
test eax, eax
jne 0x439898
mov dword [esp + 0x2c], esi
mov dword [esp + 0x34], esi
mov word [esp + 0x30], si
push ebp
mov byte [esp + 0x304], 4
call fcn.00591712
add esp, 4
cmp word [ebp + eax*2 - 2], 0x5c
mov edi, 0x69156c
je 0x439608
mov edi, 0x665ffc
mov eax, str._s_sDownloads_
test eax, eax
je 0x439737
cmp edi, esi
je 0x439737
push esi
push eax
lea ecx, [esp + 0x24]
mov dword [esp + 0x24], esi
mov dword [esp + 0x2c], esi
mov word [esp + 0x28], si
call fcn.00402800
push ebp
lea ecx, [esp + 0x54]
mov byte [esp + 0x304], 5
call fcn.00403af0
push edi
lea ecx, [esp + 0x44]
mov byte [esp + 0x304], 6
call fcn.00403af0
lea ecx, [esp + 0x2c]
mov byte [esp + 0x300], 7
call fcn.00401070
mov edi, dword [esp + 0x50]
cmp edi, esi
jne 0x439676
lea edi, [esp + 0x54]
mov esi, dword [esp + 0x24]
lea ecx, [esp + 0x40]
call fcn.00401ed0
push eax
call fcn.00591712
mov edx, eax
push edi
mov dword [esp + 0x44], edx
call fcn.00591712
mov ecx, dword [esp + 0x44]
add esi, ecx
lea esi, [eax + esi + 3]
lea eax, [esi + esi]
push eax
call fcn.005a9fe9
mov edi, eax
add esp, 0xc
test edi, edi
mov dword [esp + 0x2c], edi
je 0x439702
lea ecx, [esi + esi]
xor eax, eax
mov edx, ecx
shr ecx, 2
rep stosd dword es:[edi], eax
mov ecx, edx
and ecx, 3
rep stosb byte es:[edi], al
lea ecx, [esp + 0x40]
call fcn.00401ed0
push eax
lea ecx, [esp + 0x54]
call fcn.00401ed0
push eax
lea ecx, [esp + 0x24]
call fcn.00401ed0
push eax
mov eax, dword [esp + 0x38]
push esi
push eax
call fcn.005916a2
mov ecx, dword [esp + 0x40]
push ecx
call fcn.00591712
add esp, 0x18
mov dword [esp + 0x34], eax
lea ecx, [esp + 0x40]
mov byte [esp + 0x300], 6
call fcn.00401070
lea ecx, [esp + 0x50]
mov byte [esp + 0x300], 5
call fcn.00401070
lea ecx, [esp + 0x1c]
mov byte [esp + 0x300], 4
call fcn.00401070
xor esi, esi
mov edx, dword [esp + 0x2c]
mov ecx, ebx
push edx
call fcn.00401ee0
mov eax, dword [ebx]
cmp eax, esi
jne 0x43974c
lea eax, [ebx + 4]
push esi
push eax
call fcn.00474450
mov eax, dword [0x6697fc]
add esp, 8
xor edi, edi
cmp eax, esi
mov eax, dword [ebx]
je 0x43977c
cmp eax, esi
jne 0x43976a
lea eax, [ebx + 4]
push eax
call dword [sym.imp.KERNEL32.dll_GetFileAttributesW]
cmp eax, 0xffffffff
jne 0x439864
jmp 0x4397b3
cmp eax, esi
jne 0x439783
lea eax, [ebx + 4]
push eax
lea ecx, [esp + 0x18]
call fcn.005add0d
mov eax, dword [esp + 0x14]
push eax
call dword [sym.imp.KERNEL32.dll_GetFileAttributesA]
cmp eax, 0xffffffff
jne 0x4397a2
mov edi, 1
lea ecx, [esp + 0x14]
call fcn.005adc4d
cmp edi, esi
je 0x439864
cmp dword [ebx], esi
je 0x439822
push ebp
call fcn.00591712
add esp, 4
test eax, eax
je 0x439822
mov eax, dword [ebx]
cmp eax, ebp
ja 0x439822
push eax
call fcn.00591712
mov ecx, dword [ebx]
add esp, 4
lea edx, [ecx + eax*2]
cmp edx, ebp
jb 0x439822
push ebp
lea ecx, [esp + 0x20]
mov dword [esp + 0x20], esi
mov dword [esp + 0x28], esi
mov word [esp + 0x24], si
call fcn.00401ee0
mov eax, dword [esp + 0x1c]
mov byte [esp + 0x300], 8
cmp eax, esi
jne 0x439807
lea eax, [esp + 0x20]
push eax
mov ecx, ebx
call fcn.00401ee0
lea ecx, [esp + 0x1c]
mov byte [esp + 0x300], 4
call fcn.00401070
jmp 0x439864
mov ecx, ebx
call fcn.00401070
push ebp
call fcn.00591712
add esp, 4
test eax, eax
je 0x439864
push ebp
call fcn.00591712
lea eax, [eax + eax + 2]
push eax
call fcn.005a9fe9
add esp, 8
cmp eax, esi
mov dword [ebx], eax
je 0x439864
push ebp
call fcn.00591712
mov ecx, dword [ebx]
push ebp
push ecx
mov dword [ebx + 8], eax
call fcn.005918aa
add esp, 0xc
mov edx, dword [esp + 0x38]
push edx
call dword [sym.imp.ADVAPI32.dll_RegCloseKey]
lea ecx, [esp + 0x2c]
mov byte [esp + 0x300], 0
call fcn.00401070
lea ecx, [esp + 0x28]
mov dword [esp + 0x300], 0xffffffff
call fcn.005adc4d
mov al, 1
jmp 0x4398c2
push ebp
call fcn.005aa012
add esp, 4
mov eax, dword [esp + 0x38]
push eax
call dword [sym.imp.ADVAPI32.dll_RegCloseKey]
lea ecx, [esp + 0x28]
mov dword [esp + 0x300], 0xffffffff
call fcn.005adc4d
xor al, al
mov ecx, dword [esp + 0x2f8]
pop edi
pop esi
pop ebp
pop ebx
mov dword fs:[0], ecx
add esp, 0x2f4
ret