Query: Sigma YAML for proxy
Matching passage: Sigma rule: Detects download of certain file types from hosts in suspicious TLDs. Logsource: proxy. Rule: title: Download From Suspicious TLD - Blacklist id: 00d0b5ab-1f55-4120-8e83-487c0a7baf19 related: - id: b5de2919-b74a-4805-91a7-5049accbaefe type: similar status: test description: Detects download of certain file types from hosts in suspicious TLDs references: - https://www.symantec.com/connect/blogs/shady-tld-research-gdn-and-our-2016-wrap - https://promos.mcafee.com/en-US/PDF/MTMW_Report.pdf - https://www.spamhaus.org/statistics/tlds/ - https://krebsonsecurity.com/2018/06/bad-men-at-work-please-dont-click/ author: Florian Roth (Nextron Systems) date: 2017-11-07 modified: 2023-05-18 tags: - attack.initial-access - attack.t1566 - attack.execution - attack.t1203 - attack.t1204.002 logsource: category: proxy detection: selection: c-uri-extension: - exe - vbs - bat - rar - ps1 - doc - docm - xls - xlsm - pptm - rtf - hta - dll - ws - wsf - sct - zip cs-host|endswith: - .country - .stream - .gdn - .mom - .xin - .kim - .men - .loan - .download - .racing - .online - .science - .ren - .gb - .win - .top - .review - .vip - .party - .tech - .xyz - .date - .faith - .zip - .cricket - .space - .info - .vn - .cm - .am - .cc - .asia - .ws - .tk - .biz - .su - .st - .ro - .ge - .ms - .pk - .nu - .me - .ph - .to - .tt - .name - .tv - .kz - .tc - .mobi - .study - .click - .link - .trade - .accountant - .cf - .gq - .ml - .ga - .pw condition: selection falsepositives: - All kinds of software downloads level: low
Near-miss passage: Sigma rule: Detects usage of bitsadmin downloading a file to a suspicious target folder. Logsource: windows / process_creation. Rule: title: File Download Via Bitsadmin To A Suspicious Target Folder id: 2ddef153-167b-4e89-86b6-757a9e65dcac related: - id: 6e30c82f-a9f8-4aab-b79c-7c12bce6f248 type: obsolete - id: 1cf465a1-2609-4c15-9b66-c32dbe4bfd67 type: similar status: test description: Detects usage of bitsadmin downloading a file to a suspicious target folder 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://blog.talosintelligence.com/breaking-the-silence-recent-truebot-activity/ author: Florian Roth (Nextron Systems), Nasreddine Bencherchali (Nextron Systems) date: 2022-06-28 modified: 2025-12-10 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_folder: CommandLine|contains: - :\Perflogs - :\ProgramData\ - :\Temp\ - :\Users\Public\ - :\Windows\ - \$Recycle.Bin\ - \AppData\Local\ - \AppData\Roaming\ - \Contacts\ - \Desktop\ - \Favorites\ - \Favourites\ - \inetpub\wwwroot\ - \Music\ - \Pictures\ - \Start Menu\Programs\Startup\ - \Users\Default\ - \Videos\ - '%ProgramData%' - '%public%' - '%temp%' - '%tmp%' condition: all of selection_* falsepositives: - Unknown level: high regression_tests_path: regression_data/rules/windows/process_creation/proc_creation_win_bitsadmin_download_susp_targetfolder/info.yml simulation: - type: atomic-red-team name: Windows - BITSAdmin BITS Download technique: T1105 atomic_guid: a1921cd3-9a2d-47d5-a891-f1d0f2a7a31b