Bulk Changes to Privileged Account Permissions

Original query, unchanged.

let AdminRecords = AuditLogs
| where Category =~ "RoleManagement"
| where ActivityDisplayName has_any ("Add eligible member to role", "Add member to role")
| mv-apply TargetResource = TargetResources on 
  (
      where TargetResource.type =~ "User"
      | extend TargetUserPrincipalName = tostring(TargetResource.userPrincipalName),
               props = TargetResource.modifiedProperties
  )
| mv-apply Property = props on 
  (
      where Property.displayName =~ "Role.DisplayName"
      | extend RoleName = trim('"',tostring(Property.newValue))
  )
| where RoleName contains "Admin";
AdminRecords
| summarize dcount(TargetUserPrincipalName) by bin(TimeGenerated, 1h)
| where dcount_TargetUserPrincipalName > 9
| join kind=rightsemi  (
  AdminRecords
  | extend TimeWindow = bin(TimeGenerated, 1h)
) on $left.TimeGenerated == $right.TimeWindow
| extend InitiatedByUser = iff(isnotempty(InitiatedBy.user.userPrincipalName), tostring(InitiatedBy.user.userPrincipalName), "")
| extend InitiatingAppName = tostring(InitiatedBy.app.displayName)
| extend InitiatingAppServicePrincipalId = tostring(InitiatedBy.app.servicePrincipalId)
| extend InitiatingUserPrincipalName = tostring(InitiatedBy.user.userPrincipalName)
| extend InitiatingAadUserId = tostring(InitiatedBy.user.id)
| extend InitiatingIpAddress = tostring(iff(isnotempty(InitiatedBy.user.ipAddress), InitiatedBy.user.ipAddress, InitiatedBy.app.ipAddress))
| extend TargetName = tostring(split(TargetUserPrincipalName,'@',0)[0]), TargetUPNSuffix = tostring(split(TargetUserPrincipalName,'@',1)[0])
| extend InitiatingAccountName = tostring(split(InitiatingUserPrincipalName, "@")[0]), InitiatingAccountUPNSuffix = tostring(split(InitiatingUserPrincipalName, "@")[1])