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Active Directory (AD) administrators often struggle with stale `sIDHistory` entries and outdated computer objects. CleanupMonster is a PowerShell-based tool designed to automate the cleanup of these remnants while providing safety features like `-WhatIf` and phased “X per day” removal modes.
Key Features of CleanupMonster:
- sIDHistory Cleanup: Removes legacy security identifiers (SIDs) that accumulate over time.
- Stale Computer Object Removal: Identifies and deletes inactive AD computer accounts.
- Safety Mechanisms: Built-in reports and `-WhatIf` preview mode to prevent accidental deletions.
- Phased Cleanup: Limits daily removals to avoid disruption.
🔗 Reference: Evotec Blog
You Should Know:
1. Checking sIDHistory Manually
Use PowerShell to inspect `sIDHistory` entries:
Get-ADUser -Identity "Username" -Properties sIDHistory | Select-Object sIDHistory
2. Listing Stale Computer Objects
Find inactive computers (older than 90 days):
$DaysInactive = 90
$Time = (Get-Date).AddDays(-$DaysInactive)
Get-ADComputer -Filter {LastLogonTimeStamp -lt $Time} -Properties LastLogonTimeStamp |
Select-Object Name, LastLogonTimeStamp
3. Safe Cleanup with -WhatIf
Simulate cleanup before execution:
CleanupMonster.ps1 -WhatIf -Mode "sIDHistory"
4. Automated Phased Cleanup
Limit deletions to 5 per day:
CleanupMonster.ps1 -Mode "Computers" -LimitPerDay 5
5. Exporting Reports
Generate a CSV report of stale objects:
Get-ADComputer -Filter * -Properties LastLogonTimeStamp |
Where-Object { $_.LastLogonTimeStamp -lt $Time } |
Export-CSV "StaleComputers.csv" -NoTypeInformation
6. Linux Equivalent (Samba AD)
For Linux-based AD (Samba), use `samba-tool`:
samba-tool computer list --inactive=90
What Undercode Say:
Maintaining a clean Active Directory is critical for security and performance. Leftover `sIDHistory` entries can expose vulnerabilities, and stale computer objects clutter the directory. CleanupMonster automates this process, but always:
– Test with `-WhatIf` before mass deletions.
– Monitor phased cleanups to avoid unintended disruptions.
– Audit regularly using PowerShell or `samba-tool` in hybrid environments.
For further hardening, consider:
<h1>Disable inactive users</h1>
Get-ADUser -Filter {Enabled -eq $true} -Properties LastLogonDate |
Where-Object { $_.LastLogonDate -lt (Get-Date).AddDays(-180) } |
Disable-ADAccount
Or in Linux (Samba):
samba-tool user disable "Username"
Expected Output:
A streamlined AD environment with minimal stale objects and controlled `sIDHistory` cleanup logs.
🔗 Tool Link: CleanupMonster on Evotec
References:
Reported By: Pklys Mastering – Hackers Feeds
Extra Hub: Undercode MoN
Basic Verification: Pass ✅
