Roberto Rodriguez
27 lines
826 B
YAML
27 lines
826 B
YAML
title: DD File Overwrite
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id: 2953194b-e33c-4859-b9e8-05948c167447
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status: experimental
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description: Detects potential overwriting and deletion of a file using DD.
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date: 2021/10/15
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author: Roberto Rodriguez (Cyb3rWard0g), OTR (Open Threat Research), MSTIC
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tags:
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- attack.impact
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- attack.t1485
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references:
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- https://github.com/redcanaryco/atomic-red-team/blob/master/atomics/T1485/T1485.md#atomic-test-2---macoslinux---overwrite-file-with-dd
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logsource:
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product: linux
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category: process_creation
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detection:
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selection1:
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Image: '/bin/dd'
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selection2:
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CommandLine|contains: 'of='
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selection3:
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CommandLine|contains:
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- 'if=/dev/zero'
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- 'if=/dev/null'
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condition: selection1 and selection2 and selection3
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falsepositives:
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- Any user deleting files that way.
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level: low |