SigmaHQ/rules/network/net_possible_dns_rebinding.yml
2019-10-29 03:44:22 +03:00

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YAML

title: Possible DNS Rebinding
status: experimental
description: 'Detects DNS-answer with TTL <10.'
date: 2019/10/25
author: Ilyas Ochkov, oscd.community
references:
- https://medium.com/@brannondorsey/attacking-private-networks-from-the-internet-with-dns-rebinding-ea7098a2d325
tags:
- attack.command_and_control
- attack.t1043
logsource:
product: dns
detection:
selection:
answer: '*'
filter1:
ttl: '>0'
filter2:
ttl: '<10'
timeframe: 30s
condition: selection and filter1 and filter2 | count(answer) by src_ip > 3
level: medium