Query: write Sigma for Detects usage of the "Write-EventLog" cmdlet with 'RawData' flag. The cmdlet can be levreage to write malicious payloads
Matching passage: Sigma rule: Detects usage of the "Write-EventLog" cmdlet with 'RawData' flag. The cmdlet can be levreage to write malicious payloads. Logsource: windows / ps_script. Rule: title: PowerShell Write-EventLog Usage id: 35f41cd7-c98e-469f-8a02-ec4ba0cc7a7e status: test description: Detects usage of the "Write-EventLog" cmdlet with 'RawData' flag. The cmdlet can be levreage to write malicious payloads to the EventLog and then retrieve them later for later use references: - https://www.blackhillsinfosec.com/windows-event-logs-for-red-teams/ author: Nasreddine Bencherchali (Nextron Systems) date: 2022-08-16 tags: - attack.defense-impairment logsource: product: windows category: ps_script definition: 'Requirements: Script Block Logging must be enabled' detection: selection: ScriptBlockText|contains|all: - Write-EventLog - '-RawData ' condition: selection falsepositives: - Legitimate applications writing events via this cmdlet. Investigate alerts to determine if the action is benign level: medium
Near-miss passage: Sigma rule: Detects when adversaries stop services or processes by deleting or disabling their respective scheduled tasks in order t. Logsource: windows / security. Rule: title: Important Scheduled Task Deleted/Disabled id: 7595ba94-cf3b-4471-aa03-4f6baa9e5fad related: - id: dbc1f800-0fe0-4bc0-9c66-292c2abe3f78 type: similar - id: 9ac94dc8-9042-493c-ba45-3b5e7c86b980 type: similar - id: 9e3cb244-bdb8-4632-8c90-6079c8f4f16d type: similar status: test description: Detects when adversaries stop services or processes by deleting or disabling their respective scheduled tasks in order to conduct data destructive activities references: - https://learn.microsoft.com/en-us/previous-versions/windows/it-pro/windows-10/security/threat-protection/auditing/event-4699 - https://learn.microsoft.com/en-us/previous-versions/windows/it-pro/windows-10/security/threat-protection/auditing/event-4701 author: Nasreddine Bencherchali (Nextron Systems) date: 2022-12-05 modified: 2023-03-13 tags: - attack.execution - attack.privilege-escalation - attack.persistence - attack.t1053.005 logsource: product: windows service: security definition: The Advanced Audit Policy setting Object Access > Audit Other Object Access Events has to be configured to allow this detection. We also recommend extracting the Command field from the embedded XML in the event data. detection: selection: EventID: - 4699 - 4701 TaskName|contains: - \Windows\SystemRestore\SR - \Windows\Windows Defender\ - \Windows\BitLocker - \Windows\WindowsBackup\ - \Windows\WindowsUpdate\ - \Windows\UpdateOrchestrator\Schedule - \Windows\ExploitGuard filter_main_defender_update: EventID: 4699 SubjectUserName|endswith: $ TaskName|contains: \Windows\Windows Defender\ condition: selection and not 1 of filter_main_* falsepositives: - Unknown level: high regression_tests_path: regression_data/rules/windows/builtin/security/win_security_susp_scheduled_task_delete_or_disable/info.yml simulation: - type: atomic-red-team name: Windows - Disable the SR scheduled task technique: T1490 atomic_guid: 1c68c68d-83a4-4981-974e-8993055fa034