Shellcode Behavior from Unusual Memory

api where process.Ext.api.behaviors in ("allocate_shellcode", "shellcode", "hollow_unbacked", "execute_fluctuation") and
 process.thread.Ext.call_stack_final_user_module.protection in ("RW-", "R--", "---") and process.thread.Ext.call_stack_final_user_module.name == "Unbacked" and
 process.Ext.api.name in ("VirtualAlloc", "VirtualProtect", "WriteProcessMemory", "VirtualProtectEx", "VirtualAllocEx",
                          "MapViewOfFile", "MapViewOfFile2", "SetThreadContext", "SuspendThread", "ReadProcessMemory", "connect") and
 not _arraysearch(process.thread.Ext.call_stack_final_user_module.code_signature, $entry, $entry.trusted == true and not $entry.subject_name in ("Microsoft Corporation", "Microsoft Windows")) and
 not (process.executable : "C:\\Windows\\System32\\WindowsPowerShell\\1.0\\powershell.exe" and process.Ext.api.behaviors == "hollow_unbacked" and
      process.thread.Ext.call_stack_final_user_module.protection_provenance_path like "c:\\windows\\assembly\\nativeimages_*.ni.dll") and
 not (process.Ext.api.name == "VirtualProtect" and _arraysearch(process.thread.Ext.call_stack, $entry, $entry.symbol_info like ("*kernelbase.dll!LoadLibrary*", "*kernel32.dll!ExitProcess*"))) and
 process.thread.Ext.call_stack_final_user_module.hash.sha256 != "6a6f026505c3701e03b065ec38e64b105ff6b7129c249a77b45ad4c59d593e26" and
 not (process.executable : "C:\\Windows\\System32\\dllhost.exe" and process.parent.executable : "C:\\Windows\\System32\\svchost.exe" and
      process.thread.Ext.call_stack_summary == "ntdll.dll
| kernelbase.dll
| dbgeng.dll
| Unbacked
| Unknown" and
      process.thread.Ext.call_stack_final_user_module.protection_provenance_path == "c:\\windows\\system32\\msmpeg2adec.dll") and
 not (process.executable : "C:\\Program Files (x86)\\Mozilla Firefox\\firefox.exe" and process.thread.Ext.call_stack_final_user_module.protection_provenance_path == "c:\\windows\\syswow64\\d3d9.dll") and
 not (process.executable : "C:\\Program Files\\Epic Games\\Fortnite\\FortniteGame\\Binaries\\Win64\\FortniteClient-Win64-Shipping.exe" and
      process.code_signature.subject_name == "Epic Games Inc." and process.code_signature.trusted == true)