Function at 0x180161d30
Capabilities:
Check if file exists
Get file attributes
Query environment variable

Disassembly:
push rbp
push rsi
push rdi
push r12
push r13
push r14
push r15
lea rbp, [rsp - 0xa00]
sub rsp, 0xb00
mov qword [rsp + 0x30], 0xfffffffffffffffe
mov qword [rsp + 0xb50], rbx
mov rax, qword [0x1804cd010]
xor rax, rsp
mov qword [rbp + 0x9f0], rax
mov r14, rdx
mov r15, rcx
test rdx, rdx
je 0x180161dbd
xor r13d, r13d
mov qword [rbp - 0x30], r13
mov rsi, qword [rcx]
mov qword [rbp - 0x30], rsi
test rsi, rsi
je 0x180161d9a
mov rcx, qword [rsi]
test rcx, rcx
je 0x180161d9a
call qword [sym.imp.KERNEL32.dll_EnterCriticalSection]
nop
mov rax, qword [r15]
cmp byte [rax + 0x80], 0
jne 0x180161dc4
test rsi, rsi
je 0x180161dbd
mov rcx, qword [rsi]
test rcx, rcx
je 0x180161db9
call qword [sym.imp.KERNEL32.dll_LeaveCriticalSection]
mov qword [rbp - 0x30], r13
xor al, al
jmp 0x18016215f
mov dword [rbp - 0x28], 8
mov dword [rbp - 0x24], 0xff
lea rcx, str.COMCTL32.DLL
call qword [sym.imp.KERNEL32.dll_LoadLibraryA]
lea rdx, [0x1803cd988]
mov rcx, rax
call qword [sym.imp.KERNEL32.dll_GetProcAddress]
test rax, rax
je 0x180161dfa
lea rcx, [rbp - 0x28]
call rax
lea rcx, str.User32.dll
call qword [sym.imp.KERNEL32.dll_LoadLibraryA]
lea rdx, [0x1803cdaa8]
mov rcx, rax
call qword [sym.imp.KERNEL32.dll_GetProcAddress]
mov r12, rax
test rax, rax
je 0x180161f9e
mov rdx, qword [r15]
cmp qword [rdx + 0xb8], 0
je 0x180161f9e
cmp qword [rdx + 0x98], 0
je 0x180161f9e
add rdx, 0xa8
lea rcx, [rbp - 0x50]
call fcn.180004ad0
nop
mov rcx, qword [rbp - 0x40]
mov rdx, qword [rbp - 0x38]
mov rax, rdx
sub rax, rcx
cmp rax, 2
jb 0x180161e99
lea rdi, [rcx + 2]
mov qword [rbp - 0x40], rdi
lea rbx, [rbp - 0x50]
cmp rdx, 8
cmovae rbx, qword [rbp - 0x50]
lea rcx, [rbx + rcx*2]
mov r8d, 4
lea rdx, [0x1803cda9c]
call sub.VCRUNTIME140.dll_memmove
mov word [rbx + rdi*2], r13w
jmp 0x180161eb9
mov qword [rsp + 0x20], 2
lea r9, [0x1803cda9c]
xor r8d, r8d
lea edx, [r8 + 2]
lea rcx, [rbp - 0x50]
call fcn.180009e30
mov rdx, 0xffffffffffffffff
inc rdx
cmp word [r14 + rdx*2], 0
jne 0x180161ec0
mov rcx, qword [rbp - 0x40]
mov r8, qword [rbp - 0x38]
mov rax, r8
sub rax, rcx
cmp rdx, rax
ja 0x180161f0a
lea rdi, [rcx + rdx]
mov qword [rbp - 0x40], rdi
lea rbx, [rbp - 0x50]
cmp r8, 8
cmovae rbx, qword [rbp - 0x50]
lea r8, [rdx + rdx]
lea rcx, [rbx + rcx*2]
mov rdx, r14
call sub.VCRUNTIME140.dll_memmove
mov word [rbx + rdi*2], r13w
jmp 0x180161f1e
mov qword [rsp + 0x20], rdx
mov r9, r14
xor r8d, r8d
lea rcx, [rbp - 0x50]
call fcn.180009e30
mov r8, qword [r15]
add r8, 0x88
cmp qword [r8 + 0x18], 8
jb 0x180161f32
mov r8, qword [r8]
lea rdx, [rbp - 0x50]
cmp qword [rbp - 0x38], 8
cmovae rdx, qword [rbp - 0x50]
xor r9d, r9d
xor ecx, ecx
call r12
nop
mov rdx, qword [rbp - 0x38]
cmp rdx, 8
jb 0x180161f8c
lea rdx, [rdx*2 + 2]
mov rcx, qword [rbp - 0x50]
mov rax, rcx
cmp rdx, 0x1000
jb 0x180161f87
add rdx, 0x27
mov rcx, qword [rcx - 8]
sub rax, rcx
add rax, 0xfffffffffffffff8
cmp rax, 0x1f
jbe 0x180161f87
call qword [sym.imp.api_ms_win_crt_runtime_l1_1_0.dll__invalid_parameter_noinfo_noreturn]
int3
call fcn.180388460
movdqa xmm0, xmmword [0x1803e8770]
movdqu xmmword [rbp - 0x40], xmm0
mov word [rbp - 0x50], r13w
xor edx, edx
mov r8d, 0x208
lea rcx, [rbp - 0x20]
call sub.VCRUNTIME140.dll_memset
mov r9, qword [r15]
lea r8, [r9 + 0xc8]
cmp qword [r8 + 0x18], 8
jb 0x180161fc3
mov r8, qword [r8]
mov edx, 0x103
lea rcx, [rbp - 0x20]
lea rax, [rbp - 0x20]
sub r8, rax
lea rax, [rdx + 0x7ffffefb]
test rax, rax
je 0x180161ff6
movzx eax, word [rcx + r8]
test ax, ax
je 0x180161ff6
mov word [rcx], ax
add rcx, 2
sub rdx, 1
jne 0x180161fd3
lea rax, [rcx - 2]
test rdx, rdx
cmovne rax, rcx
mov word [rax], r13w
cmp word [rbp - 0x20], 0
je 0x180162146
cmp byte [r9 + 0xe8], 0
je 0x18016202d
lea rcx, [rbp - 0x20]
call fcn.18015e770
mov word [rbp - 0x20], r13w
jmp 0x180162146
xor edx, edx
mov r8d, 0x800
lea rcx, [rbp + 0x1f0]
call sub.VCRUNTIME140.dll_memset
mov r8d, 0x3fe
lea rdx, [rbp + 0x1f0]
lea rcx, str._programfiles_Internet_Exploreriexplore.exe
call qword [sym.imp.KERNEL32.dll_ExpandEnvironmentStringsW]
dec eax
cmp eax, 0x3fd
ja 0x18016207a
lea rcx, [rbp + 0x1f0]
call qword [sym.imp.KERNEL32.dll_GetFileAttributesW]
cmp eax, 0xffffffff
je 0x18016207a
test al, 0x10
je 0x1801620bf
mov r8d, 0x3fe
lea rdx, [rbp + 0x1f0]
lea rcx, str._programfiles_x86__Internet_Exploreriexplore.exe
call qword [sym.imp.KERNEL32.dll_ExpandEnvironmentStringsW]
dec eax
cmp eax, 0x3fd
ja 0x180162146
lea rcx, [rbp + 0x1f0]
call qword [sym.imp.KERNEL32.dll_GetFileAttributesW]
cmp eax, 0xffffffff
je 0x180162146
test al, 0x10
jne 0x180162146
xor eax, eax
mov qword [rsp + 0x74], rax
mov qword [rsp + 0x7c], rax
mov qword [rbp - 0x7c], rax
mov qword [rbp - 0x74], rax
mov qword [rbp - 0x6c], rax
mov qword [rbp - 0x64], rax
mov dword [rbp - 0x5c], eax
mov qword [rsp + 0x40], 0x70
mov qword [rsp + 0x48], r13
mov qword [rsp + 0x50], r13
lea rax, [rbp + 0x1f0]
mov qword [rsp + 0x58], rax
lea rax, [rbp - 0x20]
mov qword [rsp + 0x60], rax
mov qword [rsp + 0x68], r13
mov dword [rsp + 0x70], 1
mov qword [rbp - 0x58], r13
lea rcx, str.Shell32.dll
call qword [sym.imp.KERNEL32.dll_LoadLibraryA]
test rax, rax
je 0x180162146
lea rdx, [0x1803cdac8]
mov rcx, rax
call qword [sym.imp.KERNEL32.dll_GetProcAddress]
test rax, rax
je 0x180162146
lea rcx, [rsp + 0x40]
call rax
nop
test rsi, rsi
je 0x18016215d
mov rcx, qword [rsi]
test rcx, rcx
je 0x180162159
call qword [sym.imp.KERNEL32.dll_LeaveCriticalSection]
mov qword [rbp - 0x30], r13
mov al, 1
mov rcx, qword [rbp + 0x9f0]
xor rcx, rsp
call fcn.180388400
mov rbx, qword [rsp + 0xb50]
add rsp, 0xb00
pop r15
pop r14
pop r13
pop r12
pop rdi
pop rsi
pop rbp
ret