Function at 0x140028a90
Capabilities:
Allocate or change rwx memory
Get system information on windows
Make suspicious ntquerysysteminformation call

Disassembly:
mov qword [rsp + 0x20], rbx
push rbp
push rsi
push r15
lea rbp, [rsp - 0x47]
sub rsp, 0xd0
mov rax, qword [0x1400bb080]
xor rax, rsp
mov qword [rbp + 0x37], rax
xor edx, edx
lea r9, [rbp - 0x29]
mov rsi, rcx
xor r15d, r15d
xor r8d, r8d
mov dword [rbp - 0x29], r15d
mov ebx, r15d
lea ecx, [rdx + 0x40]
call qword [sym.imp.ntdll.dll_NtQuerySystemInformation]
cmp eax, 0xc0000004
jne 0x140028b26
nop dword [rax]
xor edx, edx
mov r8d, 0x8000
mov rcx, rbx
call qword [sym.imp.KERNEL32.dll_VirtualFree]
mov edx, dword [rbp - 0x29]
xor ecx, ecx
mov r8d, 0x3000
lea r9d, [rcx + 4]
call qword [sym.imp.KERNEL32.dll_VirtualAlloc]
mov r8d, dword [rbp - 0x29]
lea r9, [rbp - 0x29]
mov rdx, rax
mov ecx, 0x40
mov rbx, rax
call qword [sym.imp.ntdll.dll_NtQuerySystemInformation]
cmp eax, 0xc0000004
je 0x140028ae0
mov qword [rsp + 0xf8], rdi
mov qword [rsp + 0x100], r14
test eax, eax
js 0x140028d5a
test rbx, rbx
je 0x140028d70
mov edi, r15d
mov r14, r15
cmp qword [rbx], rdi
jbe 0x140028bb9
mov rax, r15
nop word [rax + rax]
lea rax, [rax + rax*4]
movups xmm0, xmmword [rbx + rax*8 + 0x10]
movups xmmword [rbp - 0x49], xmm0
movups xmm0, xmmword [rbx + rax*8 + 0x20]
movups xmmword [rbp - 0x39], xmm0
movsd xmm0, qword [rbx + rax*8 + 0x30]
movsd qword [rbp + 0x2f], xmm0
call qword [sym.imp.KERNEL32.dll_GetCurrentProcessId]
movups xmm1, xmmword [rbp - 0x49]
mov ecx, eax
movdqa xmm0, xmm1
psrldq xmm0, 8
movq rax, xmm0
cmp rax, rcx
jne 0x140028ba6
cmp qword [rbp - 0x39], rsi
je 0x140028bb4
inc edi
mov eax, edi
cmp rax, qword [rbx]
jb 0x140028b60
jmp 0x140028d5f
movq r14, xmm1
xor edx, edx
mov r8d, 0x8000
mov rcx, rbx
call qword [sym.imp.KERNEL32.dll_VirtualFree]
test r14, r14
je 0x140028d70
lea r8, [r14 + 8]
mov qword [rbp - 1], r15
mov r9d, 8
lea rdx, [rbp - 1]
mov rcx, rsi
call fcn.140028440
test al, al
je 0x140028d70
mov r8, qword [rbp - 1]
test r8, r8
je 0x140028d70
add r8, 8
mov qword [rbp + 7], r15
mov r9d, 8
lea rdx, [rbp + 7]
mov rcx, rsi
call fcn.140028440
test al, al
je 0x140028d70
mov r8, qword [rbp + 7]
test r8, r8
je 0x140028d70
add r8, 0x28
mov qword [rbp - 9], r15
mov r9d, 8
lea rdx, [rbp - 9]
mov rcx, rsi
call fcn.140028440
test al, al
je 0x140028d70
mov r8, qword [rbp - 9]
test r8, r8
je 0x140028d70
xorps xmm0, xmm0
lea rdx, [rbp - 0x21]
add r8, 0x58
mov r9d, reloc.WS2_32.dll_recv
mov rcx, rsi
movups xmmword [rbp - 0x21], xmm0
call fcn.140028440
test al, al
je 0x140028d70
movzx eax, word [rbp - 0x21]
test ax, ax
je 0x140028d70
mov ecx, eax
mov eax, 2
shr rcx, 1
inc rcx
mul rcx
mov rcx, 0xffffffffffffffff
cmovo rax, rcx
mov rcx, rax
call fcn.14008f6e0
movzx r8d, word [rbp - 0x21]
xor edx, edx
add r8, 2
mov rcx, rax
mov rbx, rax
call sub.VCRUNTIME140.dll_memset
movzx r9d, word [rbp - 0x21]
mov rdx, rbx
mov r8, qword [rbp - 0x19]
mov rcx, rsi
call fcn.140028440
test al, al
je 0x140028d70
mov rax, qword [rbp - 9]
mov word [rbp - 0x21], r15w
add rax, 0x58
je 0x140028d70
mov qword [rsp + 0x38], r15
lea rcx, [rbp - 0x21]
mov qword [rbp + 0x27], rax
lea r8, [rbp + 0xf]
lea rax, [rbp - 0x11]
mov qword [rbp + 0x1f], rcx
mov qword [rsp + 0x30], rax
mov r9d, Ordinal_41
mov dword [rsp + 0x28], r15d
mov edx, 0x80862007
mov rcx, rsi
mov qword [rsp + 0x20], r15
mov qword [rbp + 0x17], r15
mov qword [rbp + 0xf], gethostname
mov qword [rbp + 0x2f], reloc.WS2_32.dll_recv
mov dword [rbp - 0x11], r15d
call qword [sym.imp.KERNEL32.dll_DeviceIoControl]
test eax, eax
je 0x140028d70
mov rcx, rbx
call fcn.14008f6ac
mov al, 1
jmp 0x140028d72
test rbx, rbx
je 0x140028d70
mov r8d, 0x8000
xor edx, edx
mov rcx, rbx
call qword [sym.imp.KERNEL32.dll_VirtualFree]
xor al, al
mov r14, qword [rsp + 0x100]
mov rdi, qword [rsp + 0xf8]
mov rcx, qword [rbp + 0x37]
xor rcx, rsp
call fcn.14008f210
mov rbx, qword [rsp + 0x108]
add rsp, 0xd0
pop r15
pop rsi
pop rbp
ret