Query: alert when Detects when a shell program such as the Windows command prompt or PowerShell is launched with system privileges from a
Matching passage: Sigma rule: Detects when a shell program such as the Windows command prompt or PowerShell is launched with system privileges from a. Logsource: windows / process_creation. Rule: title: Elevated System Shell Spawned From Uncommon Parent Location id: 178e615d-e666-498b-9630-9ed363038101 related: - id: 61065c72-5d7d-44ef-bf41-6a36684b545f type: similar status: test description: Detects when a shell program such as the Windows command prompt or PowerShell is launched with system privileges from a uncommon parent location. references: - https://github.com/Wh04m1001/SysmonEoP author: frack113, Tim Shelton (update fp) date: 2022-12-05 modified: 2025-03-06 tags: - attack.privilege-escalation - attack.execution - attack.t1059 logsource: product: windows category: process_creation detection: selection_shell: - Image|endswith: - \powershell.exe - \powershell_ise.exe - \pwsh.exe - \cmd.exe - OriginalFileName: - PowerShell.EXE - powershell_ise.EXE - pwsh.dll - Cmd.Exe selection_user: User|contains: - AUTHORI - AUTORI LogonId: '0x3e7' filter_main_generic: ParentImage|contains: - :\Program Files (x86)\ - :\Program Files\ - :\ProgramData\ - :\Windows\System32\ - :\Windows\SysWOW64\ - :\Windows\Temp\ - :\Windows\WinSxS\ filter_optional_manageengine: ParentImage|endswith: :\ManageEngine\ADManager Plus\pgsql\bin\postgres.exe Image|endswith: \cmd.exe filter_optional_asgard: CommandLine|contains: :\WINDOWS\system32\cmd.exe /c " CurrentDirectory|contains: :\WINDOWS\Temp\asgard2-agent\ filter_optional_ibm_spectrumprotect: ParentImage|contains: :\IBM\SpectrumProtect\webserver\scripts\ CommandLine|contains: :\IBM\SpectrumProtect\webserver\scripts\ filter_main_parent_null: ParentImage: null filter_main_parent_empty: ParentImage: - '' - '-' condition: all of selection_* and not 1 of filter_main_* and not 1 of filter_optional_* falsepositives: - Some legitimate applications may spawn shells from uncommon parent locations. Apply additional filters and perform an initial baseline before deploying. level: medium
Near-miss passage: Sigma rule: Detects read access to a domain user from a non-machine account. Logsource: windows / security. Rule: title: Potential AD User Enumeration From Non-Machine Account id: ab6bffca-beff-4baa-af11-6733f296d57a status: test description: Detects read access to a domain user from a non-machine account references: - https://www.specterops.io/assets/resources/an_ace_up_the_sleeve.pdf - http://www.stuffithoughtiknew.com/2019/02/detecting-bloodhound.html - https://learn.microsoft.com/en-us/windows/win32/adschema/attributes-all - https://learn.microsoft.com/en-us/previous-versions/windows/it-pro/windows-10/security/threat-protection/auditing/event-4662 author: Maxime Thiebaut (@0xThiebaut) date: 2020-03-30 modified: 2022-11-08 tags: - attack.discovery - attack.t1087.002 logsource: product: windows service: security definition: 'Requirements: The "Read all properties" permission on the user object needs to be audited for the "Everyone" principal' detection: selection: EventID: 4662 ObjectType|contains: bf967aba-0de6-11d0-a285-00aa003049e2 AccessMask|endswith: - 1? - 3? - 4? - 7? - 9? - B? - D? - F? filter_main_machine_accounts: SubjectUserName|endswith: $ filter_main_msql: SubjectUserName|startswith: MSOL_ condition: selection and not 1 of filter_main_* falsepositives: - Administrators configuring new users. level: medium