Function at 0x140020908
Capabilities:
Get system information on windows
Make suspicious ntquerysysteminformation call
Parse pe header
Query environment variable
Resolve function by parsing pe exports

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, 0xb0
mov rax, qword [0x1401a80c0]
xor rax, rsp
mov qword [rbp + 0x2f], rax
mov byte [rbp - 0x49], r8b
mov r15, rdx
mov qword [rbp - 0x41], rdx
xor ebx, ebx
mov edi, ebx
mov dword [rbp - 0x19], ebx
lea r9, [rbp - 0x19]
xor r8d, r8d
xor edx, edx
lea esi, [rbx + 0xb]
mov ecx, esi
call qword [sym.imp.ntdll.dll_NtQuerySystemInformation]
mov r14d, 0xc0000004
jmp 0x1400209a3
xor edx, edx
mov r8d, 0x8000
mov rcx, rdi
call qword [sym.imp.KERNEL32.dll_VirtualFree]
mov edx, dword [rbp - 0x19]
xor ecx, ecx
lea r9d, [rcx + 4]
mov r8d, 0x3000
call qword [sym.imp.KERNEL32.dll_VirtualAlloc]
mov rdi, rax
lea r9, [rbp - 0x19]
mov r8d, dword [rbp - 0x19]
mov rdx, rax
mov ecx, esi
call qword [sym.imp.ntdll.dll_NtQuerySystemInformation]
cmp eax, r14d
je 0x140020967
test eax, eax
js 0x140020c89
mov r12d, ebx
cmp dword [rdi], ebx
jbe 0x140020c89
mov eax, r12d
imul r13, rax, 0x128
movzx edx, word [rdi + r13 + 0x2e]
add rdx, 0x30
add rdx, r13
add rdx, rdi
xorps xmm0, xmm0
movups xmmword [rbp + 0xf], xmm0
mov qword [rbp + 0x1f], rbx
mov qword [rbp + 0x27], rbx
or r8, 0xffffffffffffffff
inc r8
cmp byte [rdx + r8], bl
jne 0x1400209e8
lea rcx, [rbp + 0xf]
call fcn.140005990
nop
lea rcx, [rbp + 0xf]
cmp qword [rbp + 0x27], 0xf
cmova rcx, qword [rbp + 0xf]
lea rdx, [0x14017d370]
call qword [sym.imp.api_ms_win_crt_string_l1_1_0.dll__stricmp]
test eax, eax
jne 0x140020c42
lea rdx, [r13 + 0x30]
add rdx, rdi
xorps xmm0, xmm0
movups xmmword [rbp - 0x11], xmm0
mov qword [rbp - 1], rbx
mov qword [rbp + 7], rbx
or r8, 0xffffffffffffffff
inc r8
cmp byte [rdx + r8], bl
jne 0x140020a38
lea rcx, [rbp - 0x11]
call fcn.140005990
nop
lea rcx, str.SYSTEMROOT
call qword [sym.imp.api_ms_win_crt_environment_l1_1_0.dll_getenv]
xorps xmm0, xmm0
movups xmmword [rbp - 0x39], xmm0
mov qword [rbp - 0x29], rbx
mov qword [rbp - 0x21], rbx
or r8, 0xffffffffffffffff
inc r8
cmp byte [rax + r8], bl
jne 0x140020a6b
mov rdx, rax
lea rcx, [rbp - 0x39]
call fcn.140005990
nop
mov r8d, 1
lea rdx, [0x14017d35c]
lea rcx, [rbp - 0x39]
call fcn.140011f1c
mov rsi, rax
lea r14, [rbp - 0x11]
cmp qword [rbp + 7], 0xf
cmova r14, qword [rbp - 0x11]
mov rax, qword [rbp - 1]
cmp rax, 0xc
jb 0x140020b02
lea r15, [rax + r14]
lea r8, [r15 - 0xb]
sub r8, r14
mov rcx, r14
jmp 0x140020aec
mov r8d, listen
lea rdx, str.SystemRoot_
mov rcx, rbx
call sub.VCRUNTIME140.dll_memcmp
test eax, eax
je 0x140020cc9
inc rbx
lea r8, [r15 - 0xb]
sub r8, rbx
mov rcx, rbx
mov edx, 0x5c
call sub.VCRUNTIME140.dll_memchr
test rax, rax
mov rbx, rax
jne 0x140020ac2
mov r15, qword [rbp - 0x41]
or rbx, 0xffffffffffffffff
mov rax, qword [rsi + 0x10]
cmp qword [rsi + 0x18], 0xf
jbe 0x140020b14
mov rsi, qword [rsi]
mov qword [rsp + 0x20], rax
mov r9, rsi
mov rdx, rbx
lea rcx, [rbp - 0x11]
call fcn.140021ed8
nop
mov rdx, qword [rbp - 0x21]
cmp rdx, 0xf
jbe 0x140020b64
inc rdx
mov rcx, qword [rbp - 0x39]
mov rax, rcx
cmp rdx, 0x1000
jb 0x140020b5f
add rdx, 0x27
mov rcx, qword [rcx - 8]
sub rax, rcx
add rax, 0xfffffffffffffff8
cmp rax, 0x1f
ja 0x140020cd5
call fcn.140148f04
lea rcx, [rbp - 0x11]
cmp qword [rbp + 7], 0xf
cmova rcx, qword [rbp - 0x11]
xor edx, edx
lea r8d, [rdx + 1]
call qword [sym.imp.KERNEL32.dll_LoadLibraryExA]
mov rdx, rax
mov eax, 0x5a4d
cmp word [rdx], ax
jne 0x140020d04
movsxd rcx, dword [rdx + 0x3c]
cmp dword [rcx + rdx], 0x4550
jne 0x140020d04
mov eax, dword [rcx + rdx + 0x88]
test eax, eax
je 0x140020d04
mov esi, dword [rax + rdx + 0x1c]
lea rbx, [rdx + rsi]
mov r9d, dword [rax + rdx + 0x20]
add r9, rdx
mov r14d, dword [rax + rdx + 0x24]
add r14, rdx
xor r8d, r8d
test esi, esi
je 0x140020c05
mov ecx, dword [r9]
add rcx, rdx
mov rax, r15
sub rcx, r15
movzx r11d, byte [rax]
movzx r10d, byte [rax + rcx]
sub r11d, r10d
jne 0x140020bf0
inc rax
test r10d, r10d
jne 0x140020bda
test r11d, r11d
je 0x140020cdc
inc r8d
add r9, 4
cmp r8d, esi
jb 0x140020bce
mov rdx, qword [rbp + 7]
cmp rdx, 0xf
jbe 0x140020c40
inc rdx
mov rcx, qword [rbp - 0x11]
mov rax, rcx
cmp rdx, 0x1000
jb 0x140020c3b
add rdx, 0x27
mov rcx, qword [rcx - 8]
sub rax, rcx
add rax, 0xfffffffffffffff8
cmp rax, 0x1f
ja 0x140020d38
call fcn.140148f04
xor ebx, ebx
mov rdx, qword [rbp + 0x27]
cmp rdx, 0xf
jbe 0x140020c7d
inc rdx
mov rcx, qword [rbp + 0xf]
mov rax, rcx
cmp rdx, 0x1000
jb 0x140020c78
add rdx, 0x27
mov rcx, qword [rcx - 8]
sub rax, rcx
add rax, 0xfffffffffffffff8
cmp rax, 0x1f
ja 0x140020d9b
call fcn.140148f04
inc r12d
cmp r12d, dword [rdi]
jb 0x1400209bb
xor edx, edx
mov r8d, 0x8000
mov rcx, rdi
call qword [sym.imp.KERNEL32.dll_VirtualFree]
xor eax, eax
mov rcx, qword [rbp + 0x2f]
xor rcx, rsp
call fcn.140148a70
lea r11, [rsp + 0xb0]
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
sub rbx, r14
mov r15, qword [rbp - 0x41]
jmp 0x140020b06
call qword [sym.imp.api_ms_win_crt_runtime_l1_1_0.dll__invalid_parameter_noinfo_noreturn]
int3
movsxd rax, r8d
movzx ecx, word [r14 + rax*2]
mov ebx, dword [rbx + rcx*4]
xor edx, edx
mov r8d, 0x8000
mov rcx, rdi
cmp byte [rbp - 0x49], dl
jne 0x140020cfc
add rbx, qword [rdi + r13 + 0x18]
call qword [sym.imp.KERNEL32.dll_VirtualFree]
jmp 0x140020d06
xor ebx, ebx
mov rdx, qword [rbp + 7]
cmp rdx, 0xf
jbe 0x140020d44
inc rdx
mov rcx, qword [rbp - 0x11]
mov rax, rcx
cmp rdx, 0x1000
jb 0x140020d3f
add rdx, 0x27
mov rcx, qword [rcx - 8]
sub rax, rcx
add rax, 0xfffffffffffffff8
cmp rax, 0x1f
jbe 0x140020d3f
call qword [sym.imp.api_ms_win_crt_runtime_l1_1_0.dll__invalid_parameter_noinfo_noreturn]
int3
call fcn.140148f04
and qword [rbp - 1], 0
mov qword [rbp + 7], reloc.WS2_32.dll_ntohs
mov byte [rbp - 0x11], 0
mov rdx, qword [rbp + 0x27]
cmp rdx, 0xf
jbe 0x140020d93
inc rdx
mov rcx, qword [rbp + 0xf]
mov rax, rcx
cmp rdx, 0x1000
jb 0x140020d8e
add rdx, 0x27
mov rcx, qword [rcx - 8]
sub rax, rcx
add rax, 0xfffffffffffffff8
cmp rax, 0x1f
jbe 0x140020d8e
call qword [sym.imp.api_ms_win_crt_runtime_l1_1_0.dll__invalid_parameter_noinfo_noreturn]
int3
call fcn.140148f04
mov rax, rbx
jmp 0x140020c9c
call qword [sym.imp.api_ms_win_crt_runtime_l1_1_0.dll__invalid_parameter_noinfo_noreturn]
int3