ASR Bypassing Writing Executable Content

Requête originale, sans modification.

let timeframe = 1d;
let executableExtensions = dynamic([".js", ".hta", ".lnk", ".application", ".vb", ".vba", ".vbs", ".ps", ".ps1", ".bat", ".cmd"]);
DeviceFileEvents
| where Timestamp >= ago(timeframe)
| where InitiatingProcessFileName in~ ("winword.exe", "excel.exe", "outlook.exe", "powerpnt.exe")
| where ActionType == "FileRenamed"
// The mv-apply is less performance compared to doing a full written out !endswith. We kept the mv-apply since We don't hit any limits and get more readable/maintainable code.
| mv-apply ext=executableExtensions to typeof(string) on
(
    where PreviousFileName !endswith ext and FileName endswith ext
)
| project-reorder PreviousFileName, FileName
// Begin allow-list.
// End allow-list.