Query: rule covering Detects changing the PowerShell script execution policy to a potentially insecure level using the "-ExecutionPolicy" fla
Matching passage: Sigma rule: Detects changing the PowerShell script execution policy to a potentially insecure level using the "-ExecutionPolicy" fla. Logsource: windows / process_creation. Rule: title: Change PowerShell Policies to an Insecure Level id: 87e3c4e8-a6a8-4ad9-bb4f-46e7ff99a180 related: - id: cf2e938e-9a3e-4fe8-a347-411642b28a9f type: similar - id: 61d0475c-173f-4844-86f7-f3eebae1c66b type: similar - id: fad91067-08c5-4d1a-8d8c-d96a21b37814 type: similar status: test description: Detects changing the PowerShell script execution policy to a potentially insecure level using the "-ExecutionPolicy" flag. references: - https://learn.microsoft.com/en-us/powershell/module/microsoft.powershell.security/set-executionpolicy?view=powershell-7.4 - https://learn.microsoft.com/en-us/powershell/module/microsoft.powershell.core/about/about_execution_policies?view=powershell-7.4 - https://adsecurity.org/?p=2604 - https://thedfirreport.com/2021/11/01/from-zero-to-domain-admin/ author: frack113 date: 2021-11-01 modified: 2025-10-07 tags: - attack.execution - attack.t1059.001 logsource: product: windows category: process_creation detection: selection_img: - OriginalFileName: - powershell_ise.exe - PowerShell.EXE - pwsh.dll - Image|endswith: - \powershell_ise.exe - \powershell.exe - \pwsh.exe selection_option: CommandLine|contains: - '-executionpolicy ' - ' -ep ' - ' -exec ' selection_level: CommandLine|contains: - Bypass - Unrestricted filter_main_powershell_core: ParentImage: - C:\Windows\SysWOW64\msiexec.exe - C:\Windows\System32\msiexec.exe CommandLine|contains: - -NoProfile -ExecutionPolicy Bypass -File "C:\Program Files\PowerShell\7\ - -NoProfile -ExecutionPolicy Bypass -File "C:\Program Files (x86)\PowerShell\7\ filter_optional_avast: ParentImage|contains: - C:\Program Files\Avast Software\Avast\ - C:\Program Files (x86)\Avast Software\Avast\ - \instup.exe CommandLine|contains: - -ExecutionPolicy ByPass -File "C:\Program Files\Avast Software\Avast - -ExecutionPolicy ByPass -File "C:\Program Files (x86)\Avast Software\Avast\ condition: all of selection_* and not 1 of filter_main_* and not 1 of filter_optional_* falsepositives: - Administrator scripts level: medium
Near-miss passage: Sigma rule: This method detects mimikatz keywords in different Eventlogs (some of them only appear in older Mimikatz version that ar. Logsource: windows. Rule: title: Mimikatz Use id: 06d71506-7beb-4f22-8888-e2e5e2ca7fd8 status: test description: This method detects mimikatz keywords in different Eventlogs (some of them only appear in older Mimikatz version that are however still used by different threat groups) references: - https://tools.thehacker.recipes/mimikatz/modules author: Florian Roth (Nextron Systems), David ANDRE (additional keywords) date: 2017-01-10 modified: 2022-01-05 tags: - attack.s0002 - attack.lateral-movement - attack.credential-access - car.2013-07-001 - car.2019-04-004 - attack.t1003.002 - attack.t1003.004 - attack.t1003.001 - attack.t1003.006 logsource: product: windows detection: keywords: - dpapi::masterkey - eo.oe.kiwi - event::clear - event::drop - gentilkiwi.com - kerberos::golden - kerberos::ptc - kerberos::ptt - kerberos::tgt - Kiwi Legit Printer - 'lsadump::' - mimidrv.sys - \mimilib.dll - misc::printnightmare - misc::shadowcopies - misc::skeleton - privilege::backup - privilege::debug - privilege::driver - 'sekurlsa::' filter: EventID: 15 condition: keywords and not filter falsepositives: - Naughty administrators - AV Signature updates - Files with Mimikatz in their filename level: high