PSScriptPolicyTest Creation By Uncommon Process
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About the rule
Rule Type
Standard
Rule Description
Detects the creation of the "PSScriptPolicyTest" PowerShell script by an uncommon process. This file is usually generated by Microsoft Powershell to test against Applocker.
Severity
Trouble
Rule Requirement
Criteria
Action1: actionname = "File Created or Modified" AND (FILENAME contains "__PSScriptPolicyTest_" OR OBJECTNAME contains "__PSScriptPolicyTest_") AND PROCESSNAME notendswith ":\Program Files\PowerShell\7-preview\pwsh.exe,:\Program Files\PowerShell\7\pwsh.exe,:\Windows\System32\dsac.exe,:\Windows\System32\sdiagnhost.exe,:\Windows\System32\ServerManager.exe,:\Windows\System32\WindowsPowerShell\v1.0\powershell_ise.exe,:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe,:\Windows\System32\wsmprovhost.exe,:\Windows\SysWOW64\sdiagnhost.exe,:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell_ise.exe,:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe" select Action1.HOSTNAME,Action1.MESSAGE,Action1.USERNAME,Action1.DOMAIN,Action1.OBJECTNAME,Action1.FILENAME,Action1.PROCESSNAME
Detection
Execution Mode
realtime
Log Sources
Windows
Author
Nasreddine Bencherchali (Nextron Systems)
