Query: Sigma YAML for windows / wmi
Matching passage: Sigma rule: Detects failed attempts to clear Windows event logs via the WMI NTEventLogFile ClearEventLog method. Event 5858 in the W. Logsource: windows / wmi. Rule: title: Failed Event Log Clear Via WMI NTEventLogFile ClearEventLog id: d4f1a2b3-7c8e-4d5f-b6a9-1e0c2d3f4e5b status: test description: 'Detects failed attempts to clear Windows event logs via the WMI NTEventLogFile ClearEventLog method. Event 5858 in the WMI-Activity operational log is an error event, meaning it is only generated when the WMI operation encounters an error (e.g. access denied, provider failure). It could be an indication of an attacker attempting to clear event logs via WMI, but failing due to insufficient privileges or other issues. Successful clearing operations will NOT produce this event; for those, correlate with Security event 1102 or System event 104. ' references: - https://learn.microsoft.com/en-us/windows/win32/cimwin32prov/cleareventlog-method-in-class-win32-nteventlogfile author: Swachchhanda Shrawan Poudel (Nextron Systems) date: 2026-07-01 tags: - attack.defense-impairment - attack.t1685.005 logsource: product: windows service: wmi detection: selection: EventID: 5858 Operation|contains|all: - Win32_NTEventlogFile - cleareventlog condition: selection falsepositives: - Unknown level: medium regression_tests_path: regression_data/rules/windows/builtin/wmi/win_wmi_activity_nteventlogfile_cleareventlog/info.yml
Near-miss passage: Sigma rule: Identifies when ClusterRoles/Roles are being modified or deleted.. Logsource: azure / activitylogs. Rule: title: Azure Kubernetes Sensitive Role Access id: 818fee0c-e0ec-4e45-824e-83e4817b0887 status: test description: Identifies when ClusterRoles/Roles are being modified or deleted. references: - https://learn.microsoft.com/en-us/azure/role-based-access-control/resource-provider-operations#microsoftkubernetes - https://www.microsoft.com/security/blog/2021/03/23/secure-containerized-environments-with-updated-threat-matrix-for-kubernetes/ - https://www.microsoft.com/security/blog/2020/04/02/attack-matrix-kubernetes/ - https://medium.com/mitre-engenuity/att-ck-for-containers-now-available-4c2359654bf1 author: Austin Songer @austinsonger date: 2021-08-07 modified: 2022-08-23 tags: - attack.impact - attack.t1485 - attack.t1496 - attack.t1489 logsource: product: azure service: activitylogs detection: selection: operationName: - MICROSOFT.KUBERNETES/CONNECTEDCLUSTERS/RBAC.AUTHORIZATION.K8S.IO/ROLES/WRITE - MICROSOFT.KUBERNETES/CONNECTEDCLUSTERS/RBAC.AUTHORIZATION.K8S.IO/ROLES/DELETE - MICROSOFT.KUBERNETES/CONNECTEDCLUSTERS/RBAC.AUTHORIZATION.K8S.IO/ROLES/BIND/ACTION - MICROSOFT.KUBERNETES/CONNECTEDCLUSTERS/RBAC.AUTHORIZATION.K8S.IO/ROLES/ESCALATE/ACTION - MICROSOFT.KUBERNETES/CONNECTEDCLUSTERS/RBAC.AUTHORIZATION.K8S.IO/CLUSTERROLES/WRITE - MICROSOFT.KUBERNETES/CONNECTEDCLUSTERS/RBAC.AUTHORIZATION.K8S.IO/CLUSTERROLES/DELETE - MICROSOFT.KUBERNETES/CONNECTEDCLUSTERS/RBAC.AUTHORIZATION.K8S.IO/CLUSTERROLES/BIND/ACTION - MICROSOFT.KUBERNETES/CONNECTEDCLUSTERS/RBAC.AUTHORIZATION.K8S.IO/CLUSTERROLES/ESCALATE/ACTION condition: selection falsepositives: - ClusterRoles/Roles being modified and deleted may be performed by a system administrator. Verify whether the user identity, user agent, and/or hostname should be making changes in your environment. - ClusterRoles/Roles modification from unfamiliar users should be investigated. If known behavior is causing false positives, it can be exempted from the rule. level: medium