Query: rule covering Detects the creation of a scheduled task using the "-XML" flag with a file without the '.xml' extension. This behavior c
Matching passage: Sigma rule: Detects the creation of a scheduled task using the "-XML" flag with a file without the '.xml' extension. This behavior c. Logsource: windows / process_creation. Rule: title: Suspicious Scheduled Task Creation via Masqueraded XML File id: dd2a821e-3b07-4d3b-a9ac-929fe4c6ca0c status: test description: Detects the creation of a scheduled task using the "-XML" flag with a file without the '.xml' extension. This behavior could be indicative of potential defense evasion attempt during persistence references: - https://learn.microsoft.com/en-us/windows/win32/taskschd/daily-trigger-example--xml- - https://github.com/elastic/protections-artifacts/blob/084067123d3328a823b1c3fdde305b694275c794/behavior/rules/persistence_suspicious_scheduled_task_creation_via_masqueraded_xml_file.toml author: Swachchhanda Shrawan Poudel, Elastic (idea) date: 2023-04-20 modified: 2024-12-01 tags: - attack.privilege-escalation - attack.execution - attack.persistence - attack.stealth - attack.t1036.005 - attack.t1053.005 logsource: product: windows category: process_creation detection: selection_img: - Image|endswith: \schtasks.exe - OriginalFileName: schtasks.exe selection_cli_create: CommandLine|contains: - /create - -create selection_cli_xml: CommandLine|contains: - /xml - -xml filter_main_extension_xml: CommandLine|contains: .xml filter_main_system_process: IntegrityLevel: - System - S-1-16-16384 filter_main_rundll32: ParentImage|endswith: \rundll32.exe ParentCommandLine|contains|all: - :\WINDOWS\Installer\MSI - .tmp,zzzzInvokeManagedCustomActionOutOfProc filter_optional_third_party: ParentImage|endswith: - :\ProgramData\OEM\UpgradeTool\CareCenter_*\BUnzip\Setup_msi.exe - :\Program Files\Axis Communications\AXIS Camera Station\SetupActions.exe - :\Program Files\Axis Communications\AXIS Device Manager\AdmSetupActions.exe - :\Program Files (x86)\Zemana\AntiMalware\AntiMalware.exe - :\Program Files\Dell\SupportAssist\pcdrcui.exe condition: all of selection_* and not 1 of filter_main_* and not 1 of filter_optional_* falsepositives: - Unknown level: medium
Near-miss passage: Sigma rule: Detects the installation of a new shim database where the file is located in a non-default location. Logsource: windows / registry_set. Rule: title: Potential Persistence Via Shim Database In Uncommon Location id: 6b6976a3-b0e6-4723-ac24-ae38a737af41 status: test description: Detects the installation of a new shim database where the file is located in a non-default location references: - https://www.fireeye.com/blog/threat-research/2017/05/fin7-shim-databases-persistence.html - https://andreafortuna.org/2018/11/12/process-injection-and-persistence-using-application-shimming/ - https://www.blackhat.com/docs/asia-14/materials/Erickson/Asia-14-Erickson-Persist-It-Using-And-Abusing-Microsofts-Fix-It-Patches.pdf author: Nasreddine Bencherchali (Nextron Systems) date: 2023-08-01 modified: 2023-08-17 tags: - attack.privilege-escalation - attack.persistence - attack.t1546.011 logsource: category: registry_set product: windows detection: selection: TargetObject|contains|all: - \SOFTWARE\Microsoft\Windows NT\CurrentVersion\AppCompatFlags\InstalledSDB\ - \DatabasePath filter_main_known_locations: Details|contains: :\Windows\AppPatch\Custom condition: selection and not 1 of filter_main_* falsepositives: - Unknown level: high