Query: Sigma YAML for windows / security
Matching passage: Sigma rule: Detect scenarios where a potentially unauthorized application or user is modifying the system time.. Logsource: windows / security. Rule: title: Unauthorized System Time Modification id: faa031b5-21ed-4e02-8881-2591f98d82ed status: test description: Detect scenarios where a potentially unauthorized application or user is modifying the system time. references: - Private Cuckoo Sandbox (from many years ago, no longer have hash, NDA as well) - Live environment caused by malware - https://learn.microsoft.com/en-us/previous-versions/windows/it-pro/windows-10/security/threat-protection/auditing/event-4616 author: '@neu5ron' date: 2019-02-05 modified: 2025-12-03 tags: - attack.stealth - attack.t1070.006 logsource: product: windows service: security definition: 'Requirements: Audit Policy : System > Audit Security State Change, Group Policy : Computer Configuration\Windows Settings\Security Settings\Advanced Audit Policy Configuration\Audit Policies\System\Audit Security State Change' detection: selection: EventID: 4616 filter_main_svchost: ProcessName: C:\Windows\System32\svchost.exe SubjectUserSid: S-1-5-19 filter_optional_vmtools: ProcessName: - C:\Program Files\VMware\VMware Tools\vmtoolsd.exe - C:\Program Files (x86)\VMware\VMware Tools\vmtoolsd.exe - C:\Windows\System32\VBoxService.exe - C:\Windows\System32\oobe\msoobe.exe condition: selection and not 1 of filter_main_* and not 1 of filter_optional_* falsepositives: - HyperV or other virtualization technologies with binary not listed in filter portion of detection level: low
Near-miss passage: Sigma rule: Detects usage of bitsadmin downloading a file from a suspicious domain. Logsource: windows / process_creation. Rule: title: Suspicious Download From File-Sharing Website Via Bitsadmin id: 8518ed3d-f7c9-4601-a26c-f361a4256a0c related: - id: 8b48ad89-10d8-4382-a546-50588c410f0d type: similar - id: d635249d-86b5-4dad-a8c7-d7272b788586 type: similar - id: 52182dfb-afb7-41db-b4bc-5336cb29b464 type: similar - id: ae02ed70-11aa-4a22-b397-c0d0e8f6ea99 type: similar - id: e0f8ab85-0ac9-423b-a73a-81b3c7b1aa97 type: similar - id: 7b434893-c57d-4f41-908d-6a17bf1ae98f type: similar - id: 42a5f1e7-9603-4f6d-97ae-3f37d130d794 type: similar - id: 56454143-524f-49fb-b1c6-3fb8b1ad41fb type: similar - id: b6e04788-29e1-4557-bb14-77f761848ab8 type: similar - id: a0d7e4d2-bede-4141-8896-bc6e237e977c type: similar - id: 297ae038-edc2-4b2e-bb3e-7c5fc94dd5c7 type: similar status: test description: Detects usage of bitsadmin downloading a file from a suspicious domain references: - https://blog.netspi.com/15-ways-to-download-a-file/#bitsadmin - https://isc.sans.edu/diary/22264 - https://lolbas-project.github.io/lolbas/Binaries/Bitsadmin/ - https://symantec-enterprise-blogs.security.com/blogs/threat-intelligence/ransomware-hive-conti-avoslocker - https://www.cisa.gov/uscert/ncas/alerts/aa22-321a - https://www.microsoft.com/en-us/security/blog/2024/01/17/new-ttps-observed-in-mint-sandstorm-campaign-targeting-high-profile-individuals-at-universities-and-research-orgs/ author: Florian Roth (Nextron Systems) date: 2022-06-28 modified: 2026-03-29 tags: - attack.persistence - attack.execution - attack.stealth - attack.t1197 - attack.s0190 - attack.t1036.003 - attack.command-and-control - attack.t1105 logsource: category: process_creation product: windows detection: selection_img: - Image|endswith: \bitsadmin.exe - OriginalFileName: bitsadmin.exe selection_flags: CommandLine|contains: - ' /transfer ' - ' /create ' - ' /addfile ' selection_domain: CommandLine|contains: - .githubusercontent.com - 0x0.st - anonfiles.com - bashupload.com - cdn.discordapp.com - chunk.io - ddns.net - dl.dropboxusercontent.com - ghostbin.co - github.com - glitch.me - gofile.io - hastebin.com - mediafire.com - mega.nz - onrender.com - pages.dev - paste.ee - pastebin.com - pastebin.pl - pastetext.net - privatlab.com - privatlab.net - send.exploit.in - sendspace.com - storage.googleapis.com - storjshare.io - supabase.co - temp.sh - transfer.sh - trycloudflare.com - ufile.io - w3spaces.com - workers.dev - x0.at condition: all of selection_* falsepositives: - Some legitimate apps use this, but limited. level: high regression_tests_