Registry_Schtask_query.ps1

# Make the schtask for the test
schtasks /create /tn "Find_Me" /tr calc.exe /sc minute /mo 100 /k

# Loop and parse \Taskcache\Tasks Registry location for scheduled tasks
  ## Parses Actions to show the underlying binary / commands for the schtask
  ## Could replace Actions with Trigggers on line 10, after ExpandedProperty
(Get-ItemProperty "HKLM:\Software\Microsoft\Windows NT\CurrentVersion\Schedule\Taskcache\Tasks\*").PSChildName | 
Foreach-Object {
  write-host "----Schtask ID is $_---" -ForegroundColor Magenta ;
  $hexstring = (Get-ItemProperty "HKLM:\Software\Microsoft\Windows NT\CurrentVersion\Schedule\Taskcache\Tasks\$_" | Select -ExpandProperty Actions) -join ',' ;
 ($hexstring.Split(",",[System.StringSplitOptions]::RemoveEmptyEntries) | ?{$_ -gt '0'} | ForEach{[char][int]"$($_)"}) -join ''
}

# Then for the ID of interest under \Taskcache\Tree subkey
  # Example: $ID = "{8E350038-3475-413A-A1AE-20711DD11C95}" ;  
$ID = "{XYZ}" ; 
get-itemproperty -path "HKLM:\Software\Microsoft\Windows NT\CurrentVersion\Schedule\Taskcache\Tree\*" | ? Id -Match "$ID" | fl *Name,Id,PsPath

This might help: winreg-tasks-amd64.exe
Related blog and GitHub

Actions:

Triggers:

Timestamps: