Query: Sigma rule for Detects attempts to disable Windows EventLog autologger sessions via registry modification. The AutoLogger event tracing
Matching passage: Sigma rule: Detects attempts to disable Windows EventLog autologger sessions via registry modification. The AutoLogger event tracing. Logsource: windows / process_creation. Rule: title: Windows EventLog Autologger Session Registry Modification Via CommandLine id: d7b81144-b866-48a4-9bcc-275dc69d870e related: - id: f37b4bce-49d0-4087-9f5b-58bffda77316 type: similar status: experimental description: 'Detects attempts to disable Windows EventLog autologger sessions via registry modification. The AutoLogger event tracing session records events that occur early in the operating system boot process. Applications and device drivers can use the AutoLogger session to capture traces before the user logs in. Adversaries may disable these sessions to evade detection and prevent security monitoring of early boot activities and system events. ' references: - https://learn.microsoft.com/en-us/windows/win32/etw/configuring-and-starting-an-autologger-session - https://ptylu.github.io/content/report/report.html?report=25 - https://blog.palantir.com/tampering-with-windows-event-tracing-background-offense-and-defense-4be7ac62ac63 author: Swachchhanda Shrawan Poudel (Nextron Systems) date: 2025-12-25 tags: - attack.defense-impairment - attack.t1685.001 logsource: category: process_creation product: windows detection: selection_img: - Image|endswith: - \reg.exe - \powershell.exe - \pwsh.exe - OriginalFileName: - reg.exe - PowerShell.EXE - pwsh.dll selection_cli_action: CommandLine|contains: - 'add ' - Set-ItemProperty - New-ItemProperty - 'si ' selection_cli_base: CommandLine|contains: \Control\WMI\Autologger\ selection_cli_key: CommandLine|contains: - Start - Enabled condition: all of selection_* falsepositives: - Unknown level: high regression_tests_path: regression_data/rules/windows/process_creation/proc_creation_win_autologger_session_registry_modification/info.yml simulation: - type: atomic-red-team name: Disable EventLog-Application Auto Logger Session Via Registry - Cmd technique: T1562.001 atomic_guid: 653c6e17-14a2-4849-851d-f1c0cc8ea9ab - type: atomic-red-team name: Disable EventLog-Application Auto Logger Session Via Registry - PowerShell technique: T1562.001 atomic_guid: da86f239-9bd3-4e85-92ed-4a94ef111a1c - type: atomic-red-team name: Disable EventLog-Application ETW Provider Via Registry - Cmd technique: T1562.001 atomic_guid: 1cac9b54-810e-495c-8aac-989e0076583b - type: atomic-red-team name: Disable EventLog-Application ETW Provider Via Registry - PowerShell technique: T1562.001 atomic_guid: 8f907648-1ebf-4276-b0f0-e2678ca474f0
Near-miss passage: Sigma rule: Detects file renames where the target filename uses an uncommon double extension. Could indicate potential ransomware ac. Logsource: windows / file_rename. Rule: title: Suspicious Appended Extension id: e3f673b3-65d1-4d80-9146-466f8b63fa99 status: test description: Detects file renames where the target filename uses an uncommon double extension. Could indicate potential ransomware activity renaming files and adding a custom extension to the encrypted files, such as ".jpg.crypted", ".docx.locky", etc. references: - https://app.any.run/tasks/d66ead5a-faf4-4437-93aa-65785afaf9e5/ - https://blog.cyble.com/2022/08/10/onyx-ransomware-renames-its-leak-site-to-vsop/ author: frack113 date: 2022-07-16 modified: 2023-11-11 tags: - attack.impact - attack.t1486 logsource: product: windows category: file_rename definition: 'Requirements: Microsoft-Windows-Kernel-File Provider with at least the KERNEL_FILE_KEYWORD_RENAME_SETLINK_PATH keyword' detection: selection: SourceFilename|endswith: - .doc - .docx - .jpeg - .jpg - .lnk - .pdf - .png - .pst - .rtf - .xls - .xlsx TargetFilename|contains: - .doc. - .docx. - .jpeg. - .jpg. - .lnk. - .pdf. - .png. - .pst. - .rtf. - .xls. - .xlsx. filter_main_generic: TargetFilename|endswith: - .backup - .bak - .old - .orig - .temp - .tmp filter_optional_anaconda: TargetFilename|contains: :\ProgramData\Anaconda3\ TargetFilename|endswith: .c~ condition: selection and not 1 of filter_main_* and not 1 of filter_optional_* falsepositives: - Backup software level: medium