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← cd ~/events
// events/4738 · Accounts

Event ID 4738A user account was changed

A user object was changed; one event is logged per change. Some changes, such as DACL edits, show every attribute as '-'.

LogSecurity
SourceMicrosoft-Windows-Security-Auditing
AreaAccounts

What to check

Watch critical accounts, and alert when AllowedToDelegateTo is set if delegation changes matter to you.

Find it with PowerShell

Run on the machine that logs it, as an administrator.

powershell2 lines
Get-WinEvent -FilterHashtable @{ LogName = 'Security'; Id = 4738 } -MaxEvents 50 |
    Format-List TimeCreated, Id, Message

Hunt for it in Sentinel or Log Analytics

Security events land in the SecurityEvent table when you collect them with the Windows Security Events connector or a data collection rule.

kql5 lines
SecurityEvent
| where TimeGenerated > ago(7d)
| where EventID == 4738
| project TimeGenerated, Computer, Account, Activity
| order by TimeGenerated desc

Related Accounts events

Search all 123 event IDs →

Sources