{"id":9491,"date":"2026-03-18T06:20:54","date_gmt":"2026-03-18T06:20:54","guid":{"rendered":"https:\/\/pariswells.com\/blog\/?p=9491"},"modified":"2026-03-18T06:20:55","modified_gmt":"2026-03-18T06:20:55","slug":"how-to-check-if-gotomeetingzoom-or-webex-have-been-used-to-make-any-calls-so-you-can-remove-them-if-needed-via-defender-kql-logs-advanced-hunting","status":"publish","type":"post","link":"https:\/\/pariswells.com\/blog\/research\/how-to-check-if-gotomeetingzoom-or-webex-have-been-used-to-make-any-calls-so-you-can-remove-them-if-needed-via-defender-kql-logs-advanced-hunting","title":{"rendered":"How to check if GoToMeeting\\Zoom or Webex have been used to make any calls so you can remove them if needed ( via Defender KQL Logs ) Advanced Hunting"},"content":{"rendered":"\n<pre class=\"wp-block-code\"><code class=\"\">DeviceProcessEvents\n| where Timestamp > ago(30d)\n| extend\n    FN = tolower(FileName),\n    Cmd = tolower(ProcessCommandLine),\n    ParentFN = tolower(InitiatingProcessFileName),\n    ParentCmd = tolower(InitiatingProcessCommandLine),\n    MelbourneTime = Timestamp + 11h\n| where\n    (FN in (\"cpthost.exe\",\"aomhost64.exe\")\n        and ParentFN == \"zoom.exe\"\n        and ParentCmd has \"--action=join\"\n        and not(ParentCmd has \"--action=reconnect\")\n        and not(ParentCmd has \"--action=preload\"))\n    or (FN == \"zoom.exe\"\n        and Cmd has \"zoommtg:\/\/\"\n        and Cmd has \"join\"\n        and not(Cmd has \"--action=reconnect\")\n        and not(Cmd has \"--action=preload\"))\n    or (FN == \"wmlhost.exe\")\n| extend\n    App = case(\n        FN == \"wmlhost.exe\", \"Webex\",\n        \"Zoom\"\n    )\n| extend\n    EffectiveUser = iff(\n        AccountName =~ \"system\" and isnotempty(InitiatingProcessAccountName),\n        InitiatingProcessAccountName,\n        AccountName\n    )\n| summarize\n    FirstSeen = min(MelbourneTime),\n    LastSeen = max(MelbourneTime),\n    EventCount = count(),\n    ProcessesSeen = make_set(FileName, 10)\n    by App, DeviceName, EffectiveUser, bin(MelbourneTime, 1h)\n| order by FirstSeen desc<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-9491","post","type-post","status-publish","format-standard","hentry","category-research"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/pariswells.com\/blog\/wp-json\/wp\/v2\/posts\/9491","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pariswells.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/pariswells.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/pariswells.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/pariswells.com\/blog\/wp-json\/wp\/v2\/comments?post=9491"}],"version-history":[{"count":1,"href":"https:\/\/pariswells.com\/blog\/wp-json\/wp\/v2\/posts\/9491\/revisions"}],"predecessor-version":[{"id":9492,"href":"https:\/\/pariswells.com\/blog\/wp-json\/wp\/v2\/posts\/9491\/revisions\/9492"}],"wp:attachment":[{"href":"https:\/\/pariswells.com\/blog\/wp-json\/wp\/v2\/media?parent=9491"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/pariswells.com\/blog\/wp-json\/wp\/v2\/categories?post=9491"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/pariswells.com\/blog\/wp-json\/wp\/v2\/tags?post=9491"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}