Query: Sigma YAML for windows / registry_set
Matching passage: Sigma rule: Monitor the creation of a new key under 'TaskCache' when a new scheduled task is registered by a process that is not svc. Logsource: windows / registry_set. Rule: title: Scheduled TaskCache Change by Uncommon Program id: 4720b7df-40c3-48fd-bbdf-fd4b3c464f0d status: test description: Monitor the creation of a new key under 'TaskCache' when a new scheduled task is registered by a process that is not svchost.exe, which is suspicious references: - https://thedfirreport.com/2021/03/29/sodinokibi-aka-revil-ransomware/ - https://labs.f-secure.com/blog/scheduled-task-tampering/ author: Syed Hasan (@syedhasan009) date: 2021-06-18 modified: 2025-10-22 tags: - attack.privilege-escalation - attack.execution - attack.persistence - attack.t1053 - attack.t1053.005 logsource: category: registry_set product: windows detection: selection: TargetObject|contains: SOFTWARE\Microsoft\Windows NT\CurrentVersion\Schedule\TaskCache\ filter_main_empty: Details: (Empty) filter_main_null: Details: null filter_main_other: TargetObject|contains: - Microsoft\Windows\UpdateOrchestrator - Microsoft\Windows\SoftwareProtectionPlatform\SvcRestartTask\Index - Microsoft\Windows\Flighting\OneSettings\RefreshCache\Index filter_main_mousocoreworker: Image|endswith: C:\Windows\System32\MoUsoCoreWorker.exe filter_main_services: Image|endswith: C:\Windows\System32\services.exe filter_main_tiworker: Image|startswith: C:\Windows\ Image|endswith: \TiWorker.exe filter_main_svchost: Image: C:\WINDOWS\system32\svchost.exe filter_main_ngen: Image|startswith: C:\Windows\Microsoft.NET\Framework Image|endswith: \ngen.exe TargetObject|contains: - \Microsoft\Windows NT\CurrentVersion\Schedule\TaskCache\Tasks\{B66B135D-DA06-4FC4-95F8-7458E1D10129} - \Microsoft\Windows NT\CurrentVersion\Schedule\TaskCache\Tree\Microsoft\Windows\.NET Framework\.NET Framework NGEN filter_main_office: Image: - C:\Program Files\Microsoft Office\root\Integration\Integrator.exe - C:\Program Files (x86)\Microsoft Office\root\Integration\Integrator.exe - C:\Program Files\Common Files\microsoft shared\ClickToRun\OfficeC2RClient.exe - C:\Program Files (x86)\Common Files\microsoft shared\ClickToRun\OfficeC2RClient.exe filter_main_msiexec: Image: C:\Windows\System32\msiexec.exe filter_main_explorer: Image: C:\Windows\explorer.exe TargetObject|contains: \Microsoft\Windows NT\CurrentVersion\Schedule\TaskCache\Tree\Microsoft\Windows\PLA\Server Manager Performance Monitor\ filter_main_system: Image: System filter_main_runtimebroker: Image: C:\Windows\System32\RuntimeBroker.exe filter_optional_dropbox_updater: Image: - C:\Program Files (x86)\Dropbox\Update\DropboxUpdate.exe - C:\Program Files\Dropbox\Update
Near-miss passage: Sigma rule: Detects modification of autostart extensibility point (ASEP) in registry.. Logsource: windows / registry_set. Rule: title: Internet Explorer Autorun Keys Modification id: a80f662f-022f-4429-9b8c-b1a41aaa6688 related: - id: 17f878b8-9968-4578-b814-c4217fc5768c type: obsolete status: test description: Detects modification of autostart extensibility point (ASEP) in registry. references: - https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1547.001/T1547.001.md - https://learn.microsoft.com/en-us/sysinternals/downloads/autoruns - https://gist.github.com/GlebSukhodolskiy/0fc5fa5f482903064b448890db1eaf9d author: Victor Sergeev, Daniil Yugoslavskiy, Gleb Sukhodolskiy, Timur Zinniatullin, oscd.community, Tim Shelton, frack113 (split) date: 2019-10-25 modified: 2023-08-17 tags: - attack.privilege-escalation - attack.persistence - attack.t1547.001 logsource: category: registry_set product: windows detection: ie: TargetObject|contains: - \Software\Wow6432Node\Microsoft\Internet Explorer - \Software\Microsoft\Internet Explorer ie_details: TargetObject|contains: - \Toolbar - \Extensions - \Explorer Bars filter_empty: Details: (Empty) filter_extensions: TargetObject|contains: - \Extensions\{2670000A-7350-4f3c-8081-5663EE0C6C49} - \Extensions\{31D09BA0-12F5-4CCE-BE8A-2923E76605DA} - \Extensions\{789FE86F-6FC4-46A1-9849-EDE0DB0C95CA} - \Extensions\{A95fe080-8f5d-11d2-a20b-00aa003c157a} filter_toolbar: TargetObject|endswith: - \Toolbar\ShellBrowser\ITBar7Layout - \Toolbar\ShowDiscussionButton - \Toolbar\Locked condition: ie and ie_details and not 1 of filter_* falsepositives: - Legitimate software automatically (mostly, during installation) sets up autorun keys for legitimate reason - Legitimate administrator sets up autorun keys for legitimate reason level: medium