mirror of
https://github.com/valitydev/SigmaHQ.git
synced 2024-11-07 17:58:52 +00:00
26 lines
638 B
YAML
26 lines
638 B
YAML
title: Suspicious DNS Query with B64 Encoded String
|
|
id: 4153a907-2451-4e4f-a578-c52bb6881432
|
|
status: experimental
|
|
description: Detects suspicious DNS queries using base64 encoding
|
|
author: Florian Roth
|
|
date: 2018/05/10
|
|
modified: 2020/08/27
|
|
references:
|
|
- https://github.com/krmaxwell/dns-exfiltration
|
|
logsource:
|
|
category: dns
|
|
detection:
|
|
selection:
|
|
query:
|
|
- '*==.*'
|
|
condition: selection
|
|
falsepositives:
|
|
- Unknown
|
|
level: medium
|
|
tags:
|
|
- attack.exfiltration
|
|
- attack.t1048 # an old one
|
|
- attack.t1048.003
|
|
- attack.command_and_control
|
|
- attack.t1071 # an old one
|
|
- attack.t1071.004 |