Query: write Sigma for Detect modification of the User Shell Folders registry values for Startup or Common Startup which could indicate persist
Matching passage: Sigma rule: Detect modification of the User Shell Folders registry values for Startup or Common Startup which could indicate persist. Logsource: windows / registry_set. Rule: title: Modify User Shell Folders Startup Value id: 9c226817-8dc9-46c2-a58d-66655aafd7dc related: - id: 8f3ab69a-aa22-4943-aa58-e0a52fdf6818 type: similar status: test description: 'Detect modification of the User Shell Folders registry values for Startup or Common Startup which could indicate persistence attempts. Attackers may modify User Shell Folders registry keys to point to malicious executables or scripts that will be executed during startup. This technique is often used to maintain persistence on a compromised system by ensuring that the malicious payload is executed automatically. ' references: - https://github.com/redcanaryco/atomic-red-team/blob/9e5b12c4912c07562aec7500447b11fa3e17e254/atomics/T1547.001/T1547.001.md - https://www.welivesecurity.com/en/eset-research/muddywater-snakes-riverbank/ author: frack113, Swachchhanda Shrawan Poudel (Nextron Systems) date: 2022-10-01 modified: 2026-01-05 tags: - attack.persistence - attack.privilege-escalation - attack.t1547.001 logsource: product: windows category: registry_set detection: selection: TargetObject|contains: - SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\User Shell Folders - SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders TargetObject|endswith: - \Common Startup - \Startup filter_main_details_null: Details: null filter_main_programdata_startup: Details|contains: - C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Startup - '%ProgramData%\Microsoft\Windows\Start Menu\Programs\Startup' filter_main_userprofile_startup_1: Details|contains: - '%USERPROFILE%\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup' - '%%USERPROFILE%%\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup' filter_main_userprofile_startup_2: Details|contains|all: - C:\Users\ - \AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup condition: selection and not 1 of filter_main_* falsepositives: - Unknown level: high regression_tests_path: regression_data/rules/windows/registry/registry_set/registry_set_susp_user_shell_folders/info.yml simulation: - type: atomic-red-team name: Change Startup Folder - HKLM Modify User Shell Folders Common Startup Value technique: T1547.001 atomic_guid: acfef903-7662-447e-a391-9c91c2f00f7b
Near-miss passage: Sigma rule: Detects suspicious DACL modifications to deny access to a service that affects critical trustees. This can be used to hi. Logsource: windows / process_creation. Rule: title: Deny Service Access Using Security Descriptor Tampering Via Sc.EXE id: 99cf1e02-00fb-4c0d-8375-563f978dfd37 related: - id: 98c5aeef-32d5-492f-b174-64a691896d25 type: similar - id: a537cfc3-4297-4789-92b5-345bfd845ad0 type: similar status: test description: Detects suspicious DACL modifications to deny access to a service that affects critical trustees. This can be used to hide services or make them unstoppable. references: - https://www.sans.org/blog/red-team-tactics-hiding-windows-services/ - https://itconnect.uw.edu/tools-services-support/it-systems-infrastructure/msinf/other-help/understanding-sddl-syntax/ - https://learn.microsoft.com/en-us/windows/win32/secauthz/sid-strings author: Jonhnathan Ribeiro, oscd.community date: 2020-10-16 modified: 2023-02-28 tags: - attack.privilege-escalation - attack.persistence - attack.t1543.003 logsource: category: process_creation product: windows detection: selection_sc: - Image|endswith: \sc.exe - OriginalFileName: sc.exe selection_sdset: CommandLine|contains|all: - sdset - D; selection_trustee: CommandLine|contains: - ;IU - ;SU - ;BA - ;SY - ;WD condition: all of selection_* falsepositives: - Unknown level: high