Rachel Rice
f09b3ea4b1
aws_ec2_disable_encryption.yml Remove `status: success` from selection criteria, not required aws_ec2_vm_export_failure.yml Remove filter3: ``` eventName: 'ConsoleLogin' responseElements|contains: 'Failure' ``` Incompatible with selection criteria `eventName: 'CreateInstanceExportTask'` aws_ec2_download_userdata.yml, aws_iam_backdoor_users_keys.yml, aws_rds_change_master_password.yml, aws_rds_public_db_restore.yml Update reference aws_sts_assumedrole_misuse.yml Rename to aws_sts_assumerole_misuse.yml Update references to "AssumedRole" to "AssumeRole" Update selection criteria of `userIdentity.sessionContext: Role` to `userIdentity.sessionContext.sessionIssuer.type: Role`
25 lines
835 B
YAML
25 lines
835 B
YAML
title: AWS EC2 Download Userdata
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id: 26ff4080-194e-47e7-9889-ef7602efed0c
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status: experimental
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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.
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author: faloker
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date: 2020/02/11
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modified: 2021/08/20
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references:
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- https://github.com/RhinoSecurityLabs/pacu/blob/master/pacu/modules/ec2__download_userdata/main.py
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logsource:
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service: cloudtrail
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detection:
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selection_source:
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eventSource: ec2.amazonaws.com
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requestParameters.attribute: userData
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eventName: DescribeInstanceAttribute
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timeframe: 30m
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condition: selection_source | count() > 10
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falsepositives:
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- Assets management software like device42
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level: medium
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tags:
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- attack.exfiltration
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- attack.t1020
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