{"id":276,"date":"2024-12-04T10:13:36","date_gmt":"2024-12-04T09:13:36","guid":{"rendered":"https:\/\/cyber-resilience.mobi\/?p=276"},"modified":"2024-12-04T10:13:36","modified_gmt":"2024-12-04T09:13:36","slug":"surveiller-les-groupes-de-comptes-durgence-pour-detecter-les-ajouts-et-suppressions-non-autorises","status":"publish","type":"post","link":"https:\/\/cyber-resilience.mobi\/?p=276","title":{"rendered":"Surveiller les groupes de comptes d&rsquo;urgence pour d\u00e9tecter les ajouts et suppressions non autoris\u00e9s"},"content":{"rendered":"\n<pre class=\"wp-block-code\"><code>let BreakGlass = dynamic(&#91;\"GUID\"]);\nAuditLogs\n| where TimeGenerated > ago(730d)\n| where OperationName in(\"Add member to group\", \"Remove member from group\")\n| where TargetResources has_any (BreakGlass)\n| project TimeGenerated, AADTenantId, TargetResources, OperationName, InitiatedBy\n| extend\n    TargetId    = tostring(TargetResources&#91;0].id),\n    TargetUser  = tostring(TargetResources&#91;0].userPrincipalName),\n    TargetGroup = trim('\"', tostring(coalesce(TargetResources&#91;0].modifiedProperties&#91;0].oldValue, TargetResources&#91;0].modifiedProperties&#91;0].newValue))),\n    SourceId    = tostring(InitiatedBy.user.id),\n    SourceUser  = tostring(InitiatedBy.user.userPrincipalName),\n    SourceIP    = tostring(InitiatedBy.user.ipAddress)\n| project-away TargetResources, InitiatedBy\n| where TargetGroup in (BreakGlass)\n| sort by TargetId asc, TimeGenerated asc\n| scan with_match_id=Funnel declare (AddedDate: datetime, RemovedDate: datetime) with (\n    step Added: OperationName == \"Add member to group\" => AddedDate = TimeGenerated;\n    step Removed: OperationName == \"Remove member from group\" and TargetId == Added.TargetId and TargetGroup == Added.TargetGroup => RemovedDate = TimeGenerated, AddedDate = Added.TimeGenerated;\n)\n| summarize arg_max(TimeGenerated, *) by Funnel, TargetId, TargetGroup\n| extend HoursInGroup = case (isnotempty(RemovedDate), datetime_diff('hour', RemovedDate, AddedDate), datetime_diff('hour', now(), AddedDate))\n<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[20],"tags":[18],"class_list":["post-276","post","type-post","status-publish","format-standard","hentry","category-kql-sentinel","tag-kql"],"_links":{"self":[{"href":"https:\/\/cyber-resilience.mobi\/index.php?rest_route=\/wp\/v2\/posts\/276","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/cyber-resilience.mobi\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/cyber-resilience.mobi\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/cyber-resilience.mobi\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/cyber-resilience.mobi\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=276"}],"version-history":[{"count":1,"href":"https:\/\/cyber-resilience.mobi\/index.php?rest_route=\/wp\/v2\/posts\/276\/revisions"}],"predecessor-version":[{"id":277,"href":"https:\/\/cyber-resilience.mobi\/index.php?rest_route=\/wp\/v2\/posts\/276\/revisions\/277"}],"wp:attachment":[{"href":"https:\/\/cyber-resilience.mobi\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=276"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cyber-resilience.mobi\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=276"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cyber-resilience.mobi\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=276"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}