Hiding User Account Via SpecialAccounts Registry Key
Last updated on:
In this page
About the rule
Rule Type
Standard
Rule Description
Detects modifications to the registry key "HKLM\\Software\\Microsoft\\Windows NT\\CurrentVersion\\Winlogon\\SpecialAccounts\\Userlist" where the value is set to "0" in order to hide user account from being listed on the logon screen.
Severity
Trouble
Rule Requirement
Criteria
Action1:
actionname = "Registry value modified" AND (OBJECTNAME contains "\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\SpecialAccounts\UserList" OR (OBJECTNAME endswith "\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\SpecialAccounts" AND OBJECTVALUENAME startswith "UserList")) AND (INFORMATION = "DWORD (0x00000000)" OR (CHANGES = 0 AND NEWTYPE = "REG_DWORD"))
select Action1.HOSTNAME,Action1.MESSAGE,Action1.OBJECTNAME,Action1.PROCESSNAME,Action1.PREVVAL,Action1.CHANGES,Action1.USERNAME,Action1.DOMAIN,Action1.NEWTYPE,Action1.OBJECTVALUENAME,Action1.OLDTYPE
Detection
Execution Mode
realtime
Log Sources
Windows
Author
Nasreddine Bencherchali (Nextron Systems), frack113
