Falcon Sensor Version Drift Monitoring (Windows)

defineTable(query={"#event_simpleName" = OsVersionInfo AgentVersion=*
| groupBy([aid,ComputerName,AgentVersion],function=min("@timestamp"))
}, include=[aid,ComputerName,AgentVersion,_min], name="time")
| defineTable(query={"#event_simpleName" = OsVersionInfo AgentVersion=*
| event_platform=Win
| groupBy([aid,ComputerName],function=[selectFromMin(@timestamp,include=AgentVersion)])
| rename(field=AgentVersion,as=Old_Version)}, include=[aid,ComputerName,Old_Version], name="old")
| "#event_simpleName" = OsVersionInfo AgentVersion=*
| event_platform=Win
| groupBy([aid,ComputerName],function=[selectFromMax(@timestamp,include=[AgentVersion])])
| rename(field=AgentVersion,as=Current_Version)
| match(old, field=[aid])
| match(time, field=[aid,Current_Version],column=[aid,AgentVersion])
| Current_Version=/(?<Short_Current_Version>\d+\.\d+)/
| Old_Version=/(?<Short_Old_Version>\d+\.\d+)/
| if(condition=Current_Version==Old_Version, then="No change", else=if(condition= Short_Current_Version<Short_Old_Version, then="Downgrade", else=if(condition= Short_Current_Version>Short_Old_Version, then="Upgrade", else=0)))
| Status := rename(field="_if")
| "Changed at" := if(condition=Current_Version==Old_Version, then="n/a", else=formatTime(format="%Y/%m/%d %H:%M:%S", field=_min, as="Timestamp"))
| "Old Version" := rename("Old_Version")
| "Current Version" := rename("Current_Version")
| table([ComputerName,aid, "Old Version","Current Version",Status,"Changed at"])