6/24/2023 0 Comments Sigma rule![]() In either Visual Editor view or YAML Editor view, modify any of the fields to customize the rule.Īfter performing any modifications to the rule, select the Create button in the lower-right corner of the window.Details are also populated in YAML Editor view. The Duplicate rule window opens in Visual Editor view and all of the fields are automatically populated with the rule’s details. Select the Duplicate button in the upper-right corner of the pane. To begin, select the rule in the Rule name column. First search for or filter rules in the Rules list to locate the rule you want to duplicate. A new rule is created, and it appears in the list of rules on the main page of the Rules window.Īn alternative to importing a rule is duplicating a Sigma rule and then modifying it to create a custom rule. After you confirm the information for the rule is accurate, select the Create button in the lower-right corner of the window.Verify or modify the information in the fields.The Import a rule window opens and the rule definition fields are automatically populated in both the Visual Editor and YAML Editor. Either drag a YAML-formatted Sigma rule into the window or browse for the file by selecting the link and opening it.To begin, select the Import rule button in the upper-right corner of the page.Title : RDP Sensitive Settings Changed logsource : product : windows service : system description : ' Detects changes to RDP terminal service sensitive settings' detection : selection_reg : EventType : SetValue TargetObject|contains : - \services\TermService\Parameters\ServiceDll - \Control\Terminal Server\fSingleSessionPerUser - \Control\Terminal Server\fDenyTSConnections - \Policies\Microsoft\Windows NT\Terminal Services\Shadow - \Control\Terminal Server\WinStations\RDP-Tcp\InitialProgram condition : selection_reg level : high tags : - fense_evasion - attack.t1112 references : - falsepositives : - Unknown author : - Samir Bousseaden - David ANDRE status : experimental The following sample file shows the basic formatting of a rule in YAML. Importing rulesĪt this time, Security Analytics supports the import of Sigma rules in YAML format. See the next two sections for detailed steps. They involve either importing a rule in a YAML file or duplicating an existing rule and customizing it. The alternatives to manually creating a rule, however, simplify and speed up the process. Select YAML Editor and then enter information for the pre-populated field types. The Create a rule window also provides the YAML Editor so that you can create the rule directly in a YAML file format.Enter the appropriate content in each field and select Create in the lower-right corner of the window to save the rule. By default, the Visual Editor is displayed.If you choose to create the rule manually, you can refer to Sigma’s Rule Creation Guide to help understand details for each field. To do this, select the Create new rule button in the uppper-right corner of the Rules window. The first is to manually fill in the necessary fields that complete the rule, using either the Visual Editor or YAML Editor. There are several ways to create rules on the Rules page. To quickly create a new and customized rule, you can paste the rule into the YAML editor and make any modifications before saving it. To copy the rule, select the copy icon in the top right corner of the rule.Rule details are formatted as a YAML file according to the Sigma rule specification.Select YAML to display the rule in YAML file format. ![]() In Visual view, rule details are arranged in fields, and the links are active. To see rule details, select the rule in the Rule name column of the list. You can select multiple options from each list and use all three in combination to narrow results. The list is filtered and displays matching results.Īlternatively, you can use the Rule type, Rule severity, and Source dropdown lists to drill down in the alerts and filter for preferred results. Use the search bar to search for specific rules by entering a full or partial name and pressing Return/Enter on your keyboard. When you open the Rules page, all rules are listed in the table. This section covers navigation of the Rules page and description of the actions you can perform. Further options let you import rules and create new rules by first duplicating a Sigma rule then modifying it. The Rules window lists all security rules and provides options for filtering the list and viewing details for each rule.
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