Function at 0x7ff645c2bc70
Capabilities:
Get system information on windows
Make suspicious ntquerysysteminformation call
Parse pe header
Query environment variable
Resolve function by parsing pe exports

Disassembly:
mov qword [rsp + 8], rbx
mov qword [rsp + 0x10], rsi
mov qword [rsp + 0x18], rdi
push rbp
push r12
push r13
push r14
push r15
lea rbp, [rsp - 0x37]
sub rsp, 0xc0
mov rax, qword [0x7ff645d45080]
xor rax, rsp
mov qword [rbp + 0x27], rax
mov byte [rbp - 0x59], r8b
mov qword [rbp - 0x51], rdx
xor r15d, r15d
mov r12d, r15d
mov dword [rbp - 0x21], r15d
lea r9, [rbp - 0x21]
xor r8d, r8d
xor edx, edx
lea ecx, [rdx + 0xb]
call qword [sym.imp.ntdll.dll_NtQuerySystemInformation]
cmp eax, 0xc0000004
jne 0x7ff645c2bd16
nop dword [rax]
xor edx, edx
mov r8d, 0x8000
mov rcx, r12
call qword [sym.imp.kernel32.dll_VirtualFree]
mov edx, dword [rbp - 0x21]
xor ecx, ecx
lea r9d, [rcx + 4]
mov r8d, 0x3000
call qword [sym.imp.kernel32.dll_VirtualAlloc]
mov r12, rax
lea r9, [rbp - 0x21]
mov r8d, dword [rbp - 0x21]
mov rdx, rax
mov ecx, 0xb
call qword [sym.imp.ntdll.dll_NtQuerySystemInformation]
cmp eax, 0xc0000004
je 0x7ff645c2bcd0
test eax, eax
js 0x7ff645c2bfa7
mov r13d, r15d
cmp dword [r12], r15d
jbe 0x7ff645c2bfa7
mov edi, 0x5a4d
mov eax, r13d
imul rcx, rax, 0x128
lea rbx, [rcx + r12]
mov qword [rbp - 0x49], rbx
movzx edx, word [rbx + 0x2e]
add rdx, 0x30
add rdx, rcx
add rdx, r12
xorps xmm0, xmm0
movups xmmword [rbp + 7], xmm0
mov qword [rbp + 0x17], r15
mov qword [rbp + 0x1f], r15
mov r8, 0xffffffffffffffff
inc r8
cmp byte [rdx + r8], 0
jne 0x7ff645c2bd66
lea rcx, [rbp + 7]
call fcn.7ff645bd2920
nop
lea rcx, [rbp + 7]
cmp qword [rbp + 0x1f], 0xf
cmova rcx, qword [rbp + 7]
lea rdx, [0x7ff645d1e258]
call qword [sym.imp.ucrtbase.dll__stricmp]
test eax, eax
jne 0x7ff645c2bf91
lea rdx, [rbx + 0x30]
xorps xmm0, xmm0
movups xmmword [rbp - 0x19], xmm0
mov qword [rbp - 9], r15
mov qword [rbp - 1], r15
mov r8, 0xffffffffffffffff
nop word [rax + rax]
inc r8
cmp byte [rdx + r8], 0
jne 0x7ff645c2bdc0
lea rcx, [rbp - 0x19]
call fcn.7ff645bd2920
nop
lea rcx, [0x7ff645d1e238]
call qword [sym.imp.ucrtbase.dll_getenv]
xorps xmm0, xmm0
movups xmmword [rbp - 0x41], xmm0
mov qword [rbp - 0x31], r15
mov qword [rbp - 0x29], r15
mov r8, 0xffffffffffffffff
nop word [rax + rax]
inc r8
cmp byte [rax + r8], 0
jne 0x7ff645c2be00
mov rdx, rax
lea rcx, [rbp - 0x41]
call fcn.7ff645bd2920
nop
mov r8d, 1
lea rdx, [0x7ff645d1b234]
lea rcx, [rbp - 0x41]
call fcn.7ff645bd5a30
mov rsi, rax
lea r14, [rbp - 0x19]
cmp qword [rbp - 1], 0xf
cmova r14, qword [rbp - 0x19]
mov rax, qword [rbp - 9]
cmp rax, 0xc
jb 0x7ff645c2beb1
lea rdi, [rax + r14]
lea r8, [rdi - 0xb]
sub r8, r14
mov edx, 0x5c
mov rcx, r14
call sub.VCRUNTIME140.dll_memchr
mov rbx, rax
test rax, rax
je 0x7ff645c2beac
nop dword [rax + rax]
mov r8d, 0xc
lea rdx, [0x7ff645d1e248]
mov rcx, rbx
call sub.VCRUNTIME140.dll_memcmp
test eax, eax
je 0x7ff645c2bfe7
inc rbx
lea r8, [rdi - 0xb]
sub r8, rbx
mov edx, 0x5c
mov rcx, rbx
call sub.VCRUNTIME140.dll_memchr
mov rbx, rax
test rax, rax
jne 0x7ff645c2be70
mov edi, 0x5a4d
mov rbx, 0xffffffffffffffff
mov rax, qword [rsi + 0x10]
cmp qword [rsi + 0x18], 0xf
jbe 0x7ff645c2bec6
mov rsi, qword [rsi]
mov qword [rsp + 0x20], rax
mov r9, rsi
mov r8d, 0xc
mov rdx, rbx
lea rcx, [rbp - 0x19]
call fcn.7ff645bd5890
nop
lea rcx, [rbp - 0x41]
call fcn.7ff645bd5fc0
lea rcx, [rbp - 0x19]
cmp qword [rbp - 1], 0xf
cmova rcx, qword [rbp - 0x19]
xor edx, edx
lea r8d, [rdx + 1]
call qword [sym.imp.kernel32.dll_LoadLibraryExA]
mov r11, rax
cmp word [rax], di
jne 0x7ff645c2c01e
movsxd rcx, dword [rax + 0x3c]
cmp dword [rcx + rax], 0x4550
jne 0x7ff645c2c01e
mov edx, dword [rcx + rax + 0x88]
test edx, edx
je 0x7ff645c2c01e
mov ebx, dword [rdx + rax + 0x1c]
lea rdi, [rax + rbx]
mov r9d, dword [rdx + rax + 0x20]
add r9, rax
mov esi, dword [rdx + rax + 0x24]
add rsi, rax
mov r10d, r15d
test ebx, ebx
je 0x7ff645c2bf83
nop
mov r8d, dword [r9]
add r8, r11
mov rax, qword [rbp - 0x51]
sub r8, rax
nop dword [rax]
movzx edx, byte [rax]
movzx ecx, byte [rax + r8]
sub edx, ecx
jne 0x7ff645c2bf73
inc rax
test ecx, ecx
jne 0x7ff645c2bf60
test edx, edx
je 0x7ff645c2bff4
inc r10d
add r9, 4
cmp r10d, ebx
jb 0x7ff645c2bf50
lea rcx, [rbp - 0x19]
call fcn.7ff645bd5fc0
mov edi, 0x5a4d
lea rcx, [rbp + 7]
call fcn.7ff645bd5fc0
inc r13d
cmp r13d, dword [r12]
jb 0x7ff645c2bd30
xor edx, edx
mov r8d, 0x8000
mov rcx, r12
call qword [sym.imp.kernel32.dll_VirtualFree]
xor eax, eax
mov rcx, qword [rbp + 0x27]
xor rcx, rsp
call fcn.7ff645cf1220
lea r11, [rsp + 0xc0]
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 edi, 0x5a4d
jmp 0x7ff645c2beb8
movsxd rax, r10d
movzx ecx, word [rsi + rax*2]
mov r15d, dword [rdi + rcx*4]
xor edx, edx
mov r8d, 0x8000
mov rcx, r12
cmp byte [rbp - 0x59], dl
jne 0x7ff645c2c017
mov rax, qword [rbp - 0x49]
add r15, qword [rax + 0x18]
call qword [sym.imp.kernel32.dll_VirtualFree]
nop
lea rcx, [rbp - 0x19]
call fcn.7ff645bd5fc0
nop
lea rcx, [rbp + 7]
call fcn.7ff645bd5fc0
mov rax, r15
jmp 0x7ff645c2bfba