Query: detect Detects download of certain file types from hosts with dynamic DNS names (selected list) in logs
Matching 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
Near-miss passage: Sigma rule: Detects the first occurrence of a modification to Group Policy Object Attributes to add privileges to user accounts or u. Logsource: windows / security. Rule: title: Group Policy Abuse for Privilege Addition id: 1c480e10-7ee1-46d4-8ed2-85f9789e3ce4 status: test description: 'Detects the first occurrence of a modification to Group Policy Object Attributes to add privileges to user accounts or use them to add users as local admins. ' author: Elastic, Josh Nickels, Marius Rothenbücher references: - https://www.elastic.co/guide/en/security/current/group-policy-abuse-for-privilege-addition.html#_setup_275 date: 2024-09-04 tags: - attack.privilege-escalation - attack.defense-impairment - attack.t1484.001 logsource: product: windows service: security definition: 'Requirements: The "Audit Directory Service Changes" logging policy must be configured in order to receive events.' detection: selection: EventID: 5136 AttributeLDAPDisplayName: gPCMachineExtensionNames AttributeValue|contains: - 827D319E-6EAC-11D2-A4EA-00C04F79F83A - 803E14A0-B4FB-11D0-A0D0-00A0C90F574B condition: selection falsepositives: - Users allowed to perform these modifications (user found in field SubjectUserName) level: medium