Function at 0x140043080
Capabilities:
Create process on windows
Create process suspended
Inject apc
Query environment variable
Resume thread
Self delete
Terminate process
Use process replacement

Disassembly:
push r15
push r14
push r12
push rsi
push rdi
push rbx
sub rsp, 0x438
mov esi, edx
mov rbx, rcx
mov rax, qword [0x14024f038]
xor rax, rsp
mov qword [rsp + 0x430], rax
lea rdi, [rsp + 0x220]
mov r8d, 0x208
mov rcx, rdi
mov dl, 0xaa
call fcn.1400ffb20
lea rcx, str._SystemRoot_System32_rundll32.exe
mov rdx, rdi
mov r8d, 0x104
call qword [sym.imp.KERNEL32.dll_ExpandEnvironmentStringsW]
add eax, 0xfffffefc
cmp eax, 0xfffffefd
jae 0x140043196
xor edi, edi
mov rcx, qword [rsp + 0x430]
xor rcx, rsp
call fcn.1400fd9d0
mov eax, edi
add rsp, 0x438
pop rbx
pop rdi
pop rsi
pop r12
pop r14
pop r15
ret
mov ecx, 2
call fcn.1400dc0e0
test al, al
je 0x140043160
call sub.KERNEL32.dll_GetLastError
mov dword [rsp + 0x20], eax
lea rdx, str.....chromeinstaller_setup_setup_util.cc
lea rsi, [rsp + 0x58]
mov rcx, rsi
mov r8d, 0x13c
mov r9d, 2
call fcn.14016b430
lea rcx, [rsp + 0x68]
lea rdx, [0x140219d04]
mov r8d, reloc.WS2_32.dll_ntohl
call fcn.1400be440
mov rcx, rsi
call fcn.14016b4a0
mov rcx, qword [rsp + 0x190]
mov edx, 0xffffffff
call qword [sym.imp.KERNEL32.dll_TerminateProcess]
mov dil, 1
mov rcx, qword [rsp + 0x198]
mov rsi, qword [sym.imp.KERNEL32.dll_CloseHandle]
call rsi
mov rcx, qword [rsp + 0x190]
call rsi
jmp 0x1400430e7
xorps xmm0, xmm0
lea rax, [rsp + 0x1b0]
movaps xmmword [rax], xmm0
movaps xmmword [rax + 0x50], xmm0
movaps xmmword [rax + 0x40], xmm0
movaps xmmword [rax + 0x30], xmm0
movaps xmmword [rax + 0x20], xmm0
movaps xmmword [rax + 0x10], xmm0
xor edi, edi
mov qword [rax + 0x60], rdi
mov dword [rax], 0x68
lea rcx, [rsp + 0x190]
mov qword [rcx + 0x10], rdi
movaps xmmword [rcx], xmm0
mov qword [rsp + 0x48], rcx
mov qword [rsp + 0x40], rax
movups xmmword [rsp + 0x30], xmm0
mov dword [rsp + 0x28], 4
mov dword [rsp + 0x20], 0
lea rdx, [rsp + 0x220]
xor ecx, ecx
xor r8d, r8d
xor r9d, r9d
call qword [sym.imp.KERNEL32.dll_CreateProcessW]
test eax, eax
je 0x1400430e7
movzx eax, byte [rbx + 0x17]
test al, al
jns 0x14004321b
mov eax, dword [rbx + 8]
lea r8d, [rax*2 + 2]
mov rcx, qword [rsp + 0x190]
mov dword [rsp + 0x20], 4
xor edx, edx
mov r9d, 0x1000
call qword [sym.imp.KERNEL32.dll_VirtualAllocEx]
test rax, rax
je 0x14004310a
mov r14, rax
lea rax, [rsp + 0x58]
mov qword [rax], 0
movsx rcx, byte [rbx + 0x17]
test rcx, rcx
cmovs rcx, qword [rbx + 8]
lea r9, [rcx + rcx + 2]
cmovs rbx, qword [rbx]
mov rcx, qword [rsp + 0x190]
mov qword [rsp + 0x20], rax
mov rdx, r14
mov r8, rbx
call qword [sym.imp.KERNEL32.dll_WriteProcessMemory]
lea rcx, [0x140217240]
call qword [sym.imp.KERNEL32.dll_GetModuleHandleW]
mov rdi, rax
lea rdx, [0x140219ce6]
mov rbx, qword [sym.imp.KERNEL32.dll_GetProcAddress]
mov rcx, rax
call rbx
mov r15, rax
lea rdx, [0x140219cec]
mov rcx, rdi
call rbx
mov r12, rax
lea rdx, [0x140219cf8]
mov rcx, rdi
call rbx
mov rbx, rax
test r15, r15
setne al
test r12, r12
setne cl
and cl, al
test rbx, rbx
setne dil
and dil, cl
jne 0x1400432f0
call fcn.14016d550
jmp 0x140043176
mov r8d, esi
mov rdx, qword [rsp + 0x198]
mov rsi, qword [sym.imp.KERNEL32.dll_QueueUserAPC]
mov rcx, r15
call rsi
mov rdx, qword [rsp + 0x198]
mov rcx, r12
mov r8, r14
call rsi
mov rdx, qword [rsp + 0x198]
mov rcx, rbx
xor r8d, r8d
call rsi
mov rcx, qword [rsp + 0x198]
call qword [sym.imp.KERNEL32.dll_ResumeThread]
jmp 0x140043176