Query: Sigma rule for Detects the clearing or configuration tampering of EventLog using utilities such as "wevtutil", "powershell" and "wmic".
Matching passage: Sigma rule: Detects the clearing or configuration tampering of EventLog using utilities such as "wevtutil", "powershell" and "wmic".. Logsource: windows / process_creation. Rule: title: Suspicious Eventlog Clearing or Configuration Change Activity id: cc36992a-4671-4f21-a91d-6c2b72a2edf5 status: stable description: 'Detects the clearing or configuration tampering of EventLog using utilities such as "wevtutil", "powershell" and "wmic". This technique were seen used by threat actors and ransomware strains in order to evade defenses. ' references: - https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1070.001/T1070.001.md - https://eqllib.readthedocs.io/en/latest/analytics/5b223758-07d6-4100-9e11-238cfdd0fe97.html - https://learn.microsoft.com/en-us/windows-server/administration/windows-commands/wevtutil - https://gist.github.com/fovtran/ac0624983c7722e80a8f5a4babb170ee - https://jdhnet.wordpress.com/2017/12/19/changing-the-location-of-the-windows-event-logs/ - https://www.linkedin.com/posts/huntress-labs_when-a-sketchy-incident-hits-your-network-activity-7304940371078238208-Th_l/?utm_source=share&utm_medium=member_desktop&rcm=ACoAAAJTlRcB28IaUtg03HUU-IdliwzoAL1flGc - https://stackoverflow.com/questions/66011412/how-to-clear-a-event-log-in-powershell-7 - https://learn.microsoft.com/en-us/dotnet/api/system.diagnostics.eventing.reader.eventlogsession.clearlog?view=windowsdesktop-9.0&viewFallbackFrom=dotnet-plat-ext-5.0#System_Diagnostics_Eventing_Reader_EventLogSession_ClearLog_System_String_ - https://learn.microsoft.com/en-us/dotnet/api/system.diagnostics.eventlog.clear author: Ecco, Daniil Yugoslavskiy, oscd.community, D3F7A5105, Swachchhanda Shrawan Poudel (Nextron Systems) date: 2019-09-26 modified: 2026-06-01 tags: - attack.defense-impairment - attack.t1685.005 - attack.t1685.001 - car.2016-04-002 logsource: category: process_creation product: windows detection: selection_wevtutil_img: - Image|endswith: \wevtutil.exe - OriginalFileName: wevtutil.exe selection_wevtutil_cmd: CommandLine|contains: - 'clear-log ' - ' cl ' - 'set-log ' - ' sl ' - 'lfn:' selection_other_ps_img: Image|endswith: - \powershell.exe - \powershell_ise.exe - \pwsh.exe selection_other_ps_cmd: - CommandLine|contains: - 'Clear-EventLog ' - 'Remove-EventLog ' - 'Limit-EventLog ' - 'Clear-WinEvent ' - CommandLine|contains|all: - Eventing.Reader.EventLogSession - ClearLog - CommandLine|contains|all: - Diagnostics.EventLog - Clear selection_other_wmi: Image|endswith: - \powershell.exe - \powershell_ise.exe - \pwsh.exe - \wmic.exe CommandLine|contains: ClearEventLog filter_main_msiexec: ParentImage: - C:\Windows\SysWOW
Near-miss passage: Sigma rule: Detects potential malicious modification of the property value of UseLogonCredential from HKLM:\SYSTEM\CurrentControlSet. Logsource: windows / registry_set. Rule: title: Wdigest Enable UseLogonCredential id: d6a9b252-c666-4de6-8806-5561bbbd3bdc status: test description: Detects potential malicious modification of the property value of UseLogonCredential from HKLM:\SYSTEM\CurrentControlSet\Control\SecurityProviders\WDigest to enable clear-text credentials references: - https://threathunterplaybook.com/hunts/windows/190510-RegModWDigestDowngrade/notebook.html - https://support.microsoft.com/en-us/topic/microsoft-security-advisory-update-to-improve-credentials-protection-and-management-may-13-2014-93434251-04ac-b7f3-52aa-9f951c14b649 - https://github.com/redcanaryco/atomic-red-team/blob/73fcfa1d4863f6a4e17f90e54401de6e30a312bb/atomics/T1112/T1112.md#atomic-test-3---modify-registry-to-store-logon-credentials author: Roberto Rodriguez (Cyb3rWard0g), OTR (Open Threat Research) date: 2019-09-12 modified: 2023-08-17 tags: - attack.persistence - attack.defense-impairment - attack.t1112 logsource: category: registry_set product: windows detection: selection: TargetObject|endswith: WDigest\UseLogonCredential Details: DWORD (0x00000001) condition: selection falsepositives: - Unknown level: high