Outdated or unused accounts must be removed from the system or disabled.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-1112	WN12-GE-000014	SV-52854r3_rule		Low

Description
Outdated or unused accounts provide penetration points that may go undetected. Inactive accounts must be deleted if no longer necessary or, if still required, disabled until needed.

STIG	Date
Windows Server 2012 / 2012 R2 Domain Controller Security Technical Implementation Guide	2016-06-08

Details

Check Text ( C-69285r1_chk )
Run "PowerShell". Member servers and standalone systems: Copy or enter the lines below to the PowerShell window and enter. (Entering twice may be required. Do not include the quotes at the beginning and end of the query.) "([ADSI]('WinNT://{0}' -f $env:COMPUTERNAME)).Children \| Where { $_.SchemaClassName -eq 'user' } \| ForEach { $user = ([ADSI]$_.Path) $lastLogin = $user.Properties.LastLogin.Value $enabled = ($user.Properties.UserFlags.Value -band 0x2) -ne 0x2 if ($lastLogin -eq $null) { $lastLogin = 'Never' } Write-Host $user.Name $lastLogin $enabled }" This will return a list of local accounts with the account name, last logon, and if the account is enabled (True/False). For example: User1 10/31/2015 5:49:56 AM True Domain Controllers: Enter the following command in PowerShell. "Search-ADAccount -AccountInactive -UsersOnly -TimeSpan 35.00:00:00" This will return accounts that have not been logged on to for 35 days, along with various attributes such as the Enabled status and LastLogonDate. Review the list of accounts returned by the above queries to determine the finding validity for each account reported. Exclude the following accounts: Built-in administrator account (Disabled, SID ending in 500) Built-in guest account (Disabled, SID ending in 501) Application accounts If any enabled accounts have not been logged on to within the past 35 days, this is a finding. Inactive accounts that have been reviewed and deemed to be required must be documented with the ISSO.

Check Text ( C-69285r1_chk )

Run "PowerShell".

Member servers and standalone systems:
Copy or enter the lines below to the PowerShell window and enter. (Entering twice may be required. Do not include the quotes at the beginning and end of the query.)

"([ADSI]('WinNT://{0}' -f $env:COMPUTERNAME)).Children | Where { $_.SchemaClassName -eq 'user' } | ForEach {
$user = ([ADSI]$_.Path)
$lastLogin = $user.Properties.LastLogin.Value
$enabled = ($user.Properties.UserFlags.Value -band 0x2) -ne 0x2
if ($lastLogin -eq $null) {
$lastLogin = 'Never'
}
Write-Host $user.Name $lastLogin $enabled
}"

This will return a list of local accounts with the account name, last logon, and if the account is enabled (True/False).
For example: User1 10/31/2015 5:49:56 AM True

Domain Controllers:
Enter the following command in PowerShell.
"Search-ADAccount -AccountInactive -UsersOnly -TimeSpan 35.00:00:00"

This will return accounts that have not been logged on to for 35 days, along with various attributes such as the Enabled status and LastLogonDate.

Review the list of accounts returned by the above queries to determine the finding validity for each account reported.

Exclude the following accounts:
Built-in administrator account (Disabled, SID ending in 500)
Built-in guest account (Disabled, SID ending in 501)
Application accounts

If any enabled accounts have not been logged on to within the past 35 days, this is a finding.

Inactive accounts that have been reviewed and deemed to be required must be documented with the ISSO.

Fix Text (F-45780r1_fix)
Regularly review accounts to determine if they are still active. Remove or disable accounts that have not been used in the last 35 days.