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30 lines
1.1 KiB
YAML
30 lines
1.1 KiB
YAML
title: AWS IAM Backdoor Users Keys
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id: 0a5177f4-6ca9-44c2-aacf-d3f3d8b6e4d2
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status: experimental
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author: faloker
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date: 2020/02/12
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description: Detects AWS API key creation for a user by another user. Backdoored users can be used to obtain persistence in the AWS environment. Also with this alert, you can detect a flow of AWS keys in your org.
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references:
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- https://github.com/RhinoSecurityLabs/pacu/blob/master/modules/iam__backdoor_users_keys/main.py#L6
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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: iam.amazonaws.com
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selection_eventname:
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- eventName: CreateAccessKey
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filter:
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userIdentity.arn|contains: responseElements.accessKey.userName
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condition: all of selection* and not filter
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fields:
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- userIdentity.arn
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- responseElements.accessKey.userName
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- errorCode
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- errorMessage
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level: medium
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falsepositives:
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- Adding user keys to their own accounts (the filter cannot cover all possible variants of user naming)
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- AWS API keys legitimate exchange workflows
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tags:
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- attack.t1098
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