← Back to Explore
sigmamediumHunting
Low Reputation Effective Top-Level Domain (eTLD)
Detects DNS queries to domains within known low reputation eTLDs. This rule uses AlphaSOC's threat intelligence data and is updated on a monthly basis.
Detection Query
selection:
query|endswith:
- .duckdns.org
- .top
- .ddns.net
- .gl.at.ply.gg
- .portmap.io
- .icu
- .zapto.org
- .live
- .hopto.org
- .portmap.host
- .sbs
- .sytes.net
- .click
- .ydns.eu
- .site
- .cloud
- .no-ip.org
- .kozow.com
- .lat
- .pro
condition: selection
Author
Norbert Jaśniewicz (AlphaSOC)
Created
2025-08-04
Data Sources
dns
References
Tags
attack.command-and-controlattack.t1071.004attack.initial-accessdetection.threat-hunting
Raw Content
title: Low Reputation Effective Top-Level Domain (eTLD)
id: cf5ee356-65c4-4556-8d11-6977fcdfed4b
status: experimental
description: Detects DNS queries to domains within known low reputation eTLDs. This rule uses AlphaSOC's threat intelligence data and is updated on a monthly basis.
references:
- https://feeds.alphasoc.net/bad-etlds.txt
author: Norbert Jaśniewicz (AlphaSOC)
date: 2025-08-04
tags:
- attack.command-and-control
- attack.t1071.004
- attack.initial-access
- detection.threat-hunting
logsource:
category: dns
detection:
selection:
query|endswith:
- '.duckdns.org'
- '.top'
- '.ddns.net'
- '.gl.at.ply.gg'
- '.portmap.io'
- '.icu'
- '.zapto.org'
- '.live'
- '.hopto.org'
- '.portmap.host'
- '.sbs'
- '.sytes.net'
- '.click'
- '.ydns.eu'
- '.site'
- '.cloud'
- '.no-ip.org'
- '.kozow.com'
- '.lat'
- '.pro'
condition: selection
falsepositives:
- Unknown
level: medium