Query: alert when Detects when adversaries stop services or processes by deleting or disabling their respective scheduled tasks in order t
Matching 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
Near-miss passage: Sigma rule: Detects the creation of files with an executable or script extension by an Office application.. Logsource: windows / file_event. Rule: title: File With Uncommon Extension Created By An Office Application id: c7a74c80-ba5a-486e-9974-ab9e682bc5e4 status: test description: Detects the creation of files with an executable or script extension by an Office application. references: - https://thedfirreport.com/2021/03/29/sodinokibi-aka-revil-ransomware/ - https://github.com/vadim-hunter/Detection-Ideas-Rules/blob/02bcbfc2bfb8b4da601bb30de0344ae453aa1afe/Threat%20Intelligence/The%20DFIR%20Report/20210329_Sodinokibi_(aka_REvil)_Ransomware.yaml author: Vadim Khrykov (ThreatIntel), Cyb3rEng (Rule), Nasreddine Bencherchali (Nextron Systems) date: 2021-08-23 modified: 2025-10-17 tags: - attack.t1204.002 - attack.execution logsource: product: windows category: file_event detection: selection1: Image|endswith: - \excel.exe - \msaccess.exe - \mspub.exe - \powerpnt.exe - \visio.exe - \winword.exe selection2: TargetFilename|endswith: - .bat - .cmd - .com - .dll - .exe - .hta - .ocx - .proj - .ps1 - .scf - .scr - .sys - .vbe - .vbs - .wsf - .wsh filter_main_localassembly: TargetFilename|contains: \AppData\Local\assembly\tmp\ TargetFilename|endswith: .dll filter_optional_webservicecache: TargetFilename|contains|all: - C:\Users\ - \AppData\Local\Microsoft\Office\ - \WebServiceCache\AllUsers TargetFilename|endswith: .com filter_optional_webex: Image|endswith: \winword.exe TargetFilename|contains: \AppData\Local\Temp\webexdelta\ TargetFilename|endswith: - .dll - .exe filter_optional_backstageinappnavcache: TargetFilename|contains|all: - C:\Users\ - \AppData\Local\Microsoft\Office\ - \BackstageInAppNavCache\ TargetFilename|endswith: .com condition: all of selection* and not 1 of filter_main_* and not 1 of filter_optional_* falsepositives: - Unknown level: high