STIGQter: STIG Summary: Microsoft Windows Server 2016 Security Technical Implementation Guide Version: 2 Release: 2 Benchmark Date: 04 May 2021:

Outdated or unused accounts must be removed from the system or disabled.

DISA Rule

SV-224837r569186_rule

Vulnerability Number

V-224837

Group Title

SRG-OS-000104-GPOS-00051

Rule Version

WN16-00-000210

Severity

CAT II

CCI(s)

• CCI-000764 - The information system uniquely identifies and authenticates organizational users (or processes acting on behalf of organizational users).
• CCI-000795 - The organization manages information system identifiers by disabling the identifier after an organization-defined time period of inactivity.

Weight

10

Fix Recommendation

Regularly review accounts to determine if they are still active. Remove or disable accounts that have not been used in the last 35 days.

Check Contents

Open "Windows PowerShell".

Domain Controllers:

Enter "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.

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

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 (Renamed, SID ending in 500)
- Built-in guest account (Renamed, Disabled, SID ending in 501)
- Built-in default account (Renamed, Disabled, SID ending in 503)
- 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.

Vulnerability Number

V-224837

Documentable

False

Rule Version

WN16-00-000210

Severity Override Guidance

Open "Windows PowerShell".

Domain Controllers:

Enter "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.

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

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 (Renamed, SID ending in 500)
- Built-in guest account (Renamed, Disabled, SID ending in 501)
- Built-in default account (Renamed, Disabled, SID ending in 503)
- 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 Content Reference

M

Target Key

4205

Comments