Nasreddine Bencherchali
31 lines
834 B
YAML
31 lines
834 B
YAML
title: 'Binary Padding'
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id: c52a914f-3d8b-4b2a-bb75-b3991e75f8ba
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status: test
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description: 'Adversaries may use binary padding to add junk data and change the on-disk representation of malware. This rule detect using dd and truncate to add a junk data to file.'
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author: 'Igor Fits, oscd.community'
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references:
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- https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1027.001/T1027.001.md
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date: 2020/10/13
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modified: 2021/11/27
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logsource:
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product: linux
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service: auditd
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detection:
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execve:
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type: 'EXECVE'
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truncate:
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- 'truncate'
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- '-s'
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dd:
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- 'dd'
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- 'if='
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filter:
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- 'of='
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condition: execve and (all of truncate or (all of dd and not filter))
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falsepositives:
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- Legitimate script work
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level: high
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tags:
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- attack.defense_evasion
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- attack.t1027.001
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