Query: Sigma YAML for proxy
Matching passage: Sigma rule: Detects suspicious user agent strings used in APT malware in proxy logs. Logsource: proxy. Rule: title: APT User Agent id: 6ec820f2-e963-4801-9127-d8b2dce4d31b status: test description: Detects suspicious user agent strings used in APT malware in proxy logs references: - Internal Research author: Florian Roth (Nextron Systems), Markus Neis date: 2019-11-12 modified: 2024-02-15 tags: - attack.command-and-control - attack.t1071.001 logsource: category: proxy detection: selection: c-useragent: - SJZJ (compatible; MSIE 6.0; Win32) - Mozilla/5.0 (Windows NT 6.; WOW64; rv:20.0) Gecko/20100101 Firefox/20.0 - 'User-Agent: Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; Trident/4.0; SLCC' - Mozilla/4.0 (compatible; MSIE 7.4; Win32;32-bit) - webclient - Mozilla/5.0 (Windows; U; Windows NT 5.1; zh-EN; rv:1.7.12) Gecko/200 - Mozilla/4.0 (compatible; MSI 6.0; - Mozilla/5.0 (Windows NT 6.3; WOW64; rv:28.0) Gecko/20100101 Firefox/28.0 - Mozilla/5.0 (Windows NT 6.2; WOW64; rv:20.0) Gecko/20100101 Firefox/ - Mozilla/5.0 (Windows NT 6.; WOW64; rv:20.0) Gecko/20100101 Firefox/2 - Mozilla/4.0 - Netscape - Mozilla/5.0 (Windows; U; Windows NT 5.1; zh-EN; rv:1.7.12) Gecko/20100719 Firefox/1.0.7 - Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.2.13) Firefox/3.6.13 GTB7.1 - Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; WOW64; Trident/5.0) - Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; WOW64; Trident/4.0; SLCC2; .NETCLR 2.0.50727) - Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.0; SV1) - Mozilla/4.0 (compatible; MSIE 11.0; Windows NT 6.1; SV1) - Mozilla/4.0 (compatible; MSIE 8.0; Win32) - Mozilla v5.1 (Windows NT 6.1; rv:6.0.1) Gecko/20100101 Firefox/6.0.1 - Mozilla/6.1 (compatible; MSIE 9.0; Windows NT 5.3; Trident/5.0) - Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; .NET CLR 1.1.4322; .NET CLR 2.0.50727; .NET CLR 3.0.04506.30; .NET CLR 3.0.04506.648; InfoPath.1) - Mozilla/5.0 (Windows NT 6.1; WOW64) WinHttp/1.6.3.8 (WinHTTP/5.1) like Gecko - Mozilla v5.1 * - MSIE 8.0 - Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 6.1; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; .NET4.0C; .NET4.0E; InfoPath.2) - Mozilla/4.0 (compatible; RMS) - Mozilla/4.0 (compatible; MSIE 6.0; DynGate) - O/9.27 (W; U; Z) - Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.0; Trident/5.0; Trident/5.0* - Mozilla/5.0 (Windows NT 9; * - hots scot - Mozilla/5.0 (compatible; MSIE 10.0; Windows NT) - Mozilla/5.0 (Windows NT 6.1; WOW64) Chrome/28.0.1500.95 Safari/537.36 - Mozilla/5.0 (Windows NT 6.2; Win32; rv:47.0) - Mozilla/4.0 (compatibl
Near-miss passage: Sigma rule: Detects outbound network connection initiated by Microsoft Dialer. The Microsoft Dialer, also known as Phone Dialer, is. Logsource: windows / network_connection. Rule: title: Outbound Network Connection Initiated By Microsoft Dialer id: 37e4024a-6c80-4d8f-b95d-2e7e94f3a8d1 status: test description: 'Detects outbound network connection initiated by Microsoft Dialer. The Microsoft Dialer, also known as Phone Dialer, is a built-in utility application included in various versions of the Microsoft Windows operating system. Its primary function is to provide users with a graphical interface for managing phone calls via a modem or a phone line connected to the computer. This is an outdated process in the current conext of it''s usage and is a common target for info stealers for process injection, and is used to make C2 connections, common example is "Rhadamanthys" ' references: - https://tria.ge/240301-rk34sagf5x/behavioral2 - https://app.any.run/tasks/6720b85b-9c53-4a12-b1dc-73052a78477d - https://research.checkpoint.com/2023/rhadamanthys-v0-5-0-a-deep-dive-into-the-stealers-components/ - https://strontic.github.io/xcyclopedia/library/dialer.exe-0B69655F912619756C704A0BF716B61F.html author: CertainlyP date: 2024-04-26 tags: - attack.execution - attack.command-and-control - attack.t1071.001 logsource: category: network_connection product: windows detection: selection: Image|endswith: :\Windows\System32\dialer.exe Initiated: 'true' filter_main_local_ranges: DestinationIp|cidr: - 127.0.0.0/8 - 10.0.0.0/8 - 172.16.0.0/12 - 192.168.0.0/16 - 169.254.0.0/16 - ::1/128 - fe80::/10 - fc00::/7 condition: selection and not 1 of filter_main_* falsepositives: - In Modern Windows systems, unable to see legitimate usage of this process, However, if an organization has legitimate purpose for this there can be false positives. level: high