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blue-team-tools/rules/cloud/aws/aws_ec2_download_userdata.yml
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2022-10-09 16:54:04 +02:00

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YAML

title: AWS EC2 Download Userdata
id: 26ff4080-194e-47e7-9889-ef7602efed0c
status: test
description: Detects bulk downloading of User Data associated with AWS EC2 instances. Instance User Data may include installation scripts and hard-coded secrets for deployment.
references:
- https://github.com/RhinoSecurityLabs/pacu/blob/866376cd711666c775bbfcde0524c817f2c5b181/pacu/modules/ec2__download_userdata/main.py
author: faloker
date: 2020/02/11
modified: 2022/10/09
tags:
- attack.exfiltration
- attack.t1020
logsource:
product: aws
service: cloudtrail
detection:
selection_source:
eventSource: ec2.amazonaws.com
requestParameters.attribute: userData
eventName: DescribeInstanceAttribute
timeframe: 30m
condition: selection_source | count() > 10
falsepositives:
- Assets management software like device42
level: medium