Query: Sigma rule for Detects the execution of certutil with certain flags that allow the utility to download files from direct IPs.
Matching passage: Sigma rule: Detects the execution of certutil with certain flags that allow the utility to download files from direct IPs.. Logsource: windows / process_creation. Rule: title: Suspicious File Downloaded From Direct IP Via Certutil.EXE id: 13e6fe51-d478-4c7e-b0f2-6da9b400a829 related: - id: 19b08b1c-861d-4e75-a1ef-ea0c1baf202b type: similar - id: 42a5f1e7-9603-4f6d-97ae-3f37d130d794 type: similar status: test description: Detects the execution of certutil with certain flags that allow the utility to download files from direct IPs. references: - https://learn.microsoft.com/en-us/windows-server/administration/windows-commands/certutil - https://forensicitguy.github.io/agenttesla-vba-certutil-download/ - https://news.sophos.com/en-us/2021/04/13/compromised-exchange-server-hosting-cryptojacker-targeting-other-exchange-servers/ - https://twitter.com/egre55/status/1087685529016193025 - https://lolbas-project.github.io/lolbas/Binaries/Certutil/ - https://twitter.com/_JohnHammond/status/1708910264261980634 - https://www.hexacorn.com/blog/2020/08/23/certutil-one-more-gui-lolbin author: Nasreddine Bencherchali (Nextron Systems) date: 2023-02-15 modified: 2025-12-01 tags: - attack.stealth - attack.t1027 - attack.command-and-control - attack.t1105 logsource: category: process_creation product: windows detection: selection_img: - Image|endswith: \certutil.exe - OriginalFileName: CertUtil.exe selection_flags: CommandLine|contains: - 'urlcache ' - 'verifyctl ' - 'URL ' selection_http: CommandLine|contains: - ://1 - ://2 - ://3 - ://4 - ://5 - ://6 - ://7 - ://8 - ://9 filter_main_seven_zip: CommandLine|contains: ://7- condition: all of selection_* and not 1 of filter_main_* falsepositives: - Unknown level: high regression_tests_path: regression_data/rules/windows/process_creation/proc_creation_win_certutil_download_direct_ip/info.yml
Near-miss passage: Sigma rule: Detects when adversaries try to stop system services or processes by deleting or disabling their respective scheduled ta. Logsource: windows / taskscheduler. Rule: title: Important Scheduled Task Deleted or Disabled id: 9e3cb244-bdb8-4632-8c90-6079c8f4f16d related: - id: dbc1f800-0fe0-4bc0-9c66-292c2abe3f78 type: similar - id: 7595ba94-cf3b-4471-aa03-4f6baa9e5fad type: similar - id: 9ac94dc8-9042-493c-ba45-3b5e7c86b980 type: similar status: test description: 'Detects when adversaries try to stop system services or processes by deleting or disabling their respective scheduled tasks in order to conduct data destructive activities ' references: - https://www.socinvestigation.com/most-common-windows-event-ids-to-hunt-mind-map/ author: frack113 date: 2023-01-13 modified: 2026-03-11 tags: - attack.impact - attack.t1489 logsource: product: windows service: taskscheduler definition: 'Requirements: The "Microsoft-Windows-TaskScheduler/Operational" is disabled by default and needs to be enabled in order for this detection to trigger' detection: selection: EventID: - 141 - 142 TaskName|contains: - \Windows\SystemRestore\SR - \Windows\Windows Defender\ - \Windows\BitLocker - \Windows\WindowsBackup\ - \Windows\WindowsUpdate\ - \Windows\UpdateOrchestrator\ - \Windows\ExploitGuard filter_main_user: UserName|contains: - AUTHORI - AUTORI condition: selection and not 1 of filter_main_* falsepositives: - Unknown level: high regression_tests_path: regression_data/rules/windows/builtin/taskscheduler/win_taskscheduler_susp_schtasks_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