Query: write Sigma for Detects uncommon or suspicious child processes of "eventvwr.exe" which might indicate a UAC bypass attempt
Matching passage: Sigma rule: Detects uncommon or suspicious child processes of "eventvwr.exe" which might indicate a UAC bypass attempt. Logsource: windows / process_creation. Rule: title: Potentially Suspicious Event Viewer Child Process id: be344333-921d-4c4d-8bb8-e584cf584780 related: - id: 7c81fec3-1c1d-43b0-996a-46753041b1b6 type: derived status: test description: Detects uncommon or suspicious child processes of "eventvwr.exe" which might indicate a UAC bypass attempt references: - https://enigma0x3.net/2016/08/15/fileless-uac-bypass-using-eventvwr-exe-and-registry-hijacking/ - https://www.hybrid-analysis.com/sample/e122bc8bf291f15cab182a5d2d27b8db1e7019e4e96bb5cdbd1dfe7446f3f51f?environmentId=100 author: Florian Roth (Nextron Systems) date: 2017-03-19 modified: 2023-09-28 tags: - attack.privilege-escalation - attack.t1548.002 - car.2019-04-001 logsource: category: process_creation product: windows detection: selection: ParentImage|endswith: \eventvwr.exe filter_main_generic: Image|endswith: - :\Windows\System32\mmc.exe - :\Windows\System32\WerFault.exe - :\Windows\SysWOW64\WerFault.exe condition: selection and not 1 of filter_main_* falsepositives: - Unknown level: high
Near-miss passage: Sigma rule: Detects download of certain file types from hosts with dynamic DNS names (selected list). Logsource: proxy. Rule: title: Download from Suspicious Dyndns Hosts id: 195c1119-ef07-4909-bb12-e66f5e07bf3c status: test description: Detects download of certain file types from hosts with dynamic DNS names (selected list) references: - https://www.alienvault.com/blogs/security-essentials/dynamic-dns-security-and-potential-threats author: Florian Roth (Nextron Systems) date: 2017-11-08 modified: 2023-05-18 tags: - attack.command-and-control - attack.t1105 - attack.t1568 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: - .hopto.org - .no-ip.org - .no-ip.info - .no-ip.biz - .no-ip.com - .noip.com - .ddns.name - .myftp.org - .myftp.biz - .serveblog.net - .servebeer.com - .servemp3.com - .serveftp.com - .servequake.com - .servehalflife.com - .servehttp.com - .servegame.com - .servepics.com - .myvnc.com - .ignorelist.com - .jkub.com - .dlinkddns.com - .jumpingcrab.com - .ddns.info - .mooo.com - .dns-dns.com - .strangled.net - .adultdns.net - .craftx.biz - .ddns01.com - .dns53.biz - .dnsapi.info - .dnsd.info - .dnsdynamic.com - .dnsdynamic.net - .dnsget.org - .fe100.net - .flashserv.net - .ftp21.net - .http01.com - .http80.info - .https443.com - .imap01.com - .kadm5.com - .mysq1.net - .ns360.info - .ntdll.net - .ole32.com - .proxy8080.com - .sql01.com - .ssh01.com - .ssh22.net - .tempors.com - .tftpd.net - .ttl60.com - .ttl60.org - .user32.com - .voip01.com - .wow64.net - .x64.me - .xns01.com - .dyndns.org - .dyndns.info - .dyndns.tv - .dyndns-at-home.com - .dnsomatic.com - .zapto.org - .webhop.net - .25u.com - .slyip.net condition: selection falsepositives: - Software downloads level: medium