The following queries will return modifications to time in a windows environment. It ignores system and service accounts. Windows 2008 and newer: source=”WinEventLog:Security” EventCode=4616 (NOT Account_Name=”*$”) (NOT Account_Name=”LOCAL SERVICE”)| eval Date=strftime(_time, “%Y/%m/%d %H:%M:%S”)| eval oldtime = strptime(replace(Previous_Time, “\D”, “”), “%Y%m%d%H%M%S%9N”) | eval t=_time | rename t as “eventtime” |eval diff=round(((eventtime-oldtime)/60)/60,2) | where diff!=0| stats count […]