frack113
25 lines
828 B
YAML
25 lines
828 B
YAML
title: Possible DNS Tunneling
|
|
id: 1ec4b281-aa65-46a2-bdae-5fd830ed914e
|
|
status: test
|
|
description: Normally, DNS logs contain a limited amount of different dns queries for a single domain. This rule detects a high amount of queries for a single domain, which can be an indicator that DNS is used to transfer data.
|
|
author: Patrick Bareiss
|
|
references:
|
|
- https://zeltser.com/c2-dns-tunneling/
|
|
- https://patrick-bareiss.com/detect-c2-traffic-over-dns-using-sigma/
|
|
date: 2019/04/07
|
|
modified: 2021/11/27
|
|
logsource:
|
|
category: dns
|
|
detection:
|
|
selection:
|
|
parent_domain: '*'
|
|
condition: selection | count(dns_query) by parent_domain > 1000
|
|
falsepositives:
|
|
- Valid software, which uses dns for transferring data
|
|
level: high
|
|
tags:
|
|
- attack.command_and_control
|
|
- attack.t1071.004
|
|
- attack.exfiltration
|
|
- attack.t1048.003
|