SigmaHQ/rules/network/net_susp_dns_b64_queries.yml
2018-05-10 14:08:52 +02:00

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YAML

title: Suspicious DNS Query with B64 Encoded String
status: experimental
description: Detects suspicious DNS queries using base64 encoding
references:
- https://github.com/krmaxwell/dns-exfiltration
author: Florian Roth
date: 2018/05/10
logsource:
category: dns
detection:
selection:
query:
- '*==.*'
condition: selection
falsepositives:
- Unknown
level: medium