Nasreddine Bencherchali
5656c48a97
chore: rename auditd folders and others update: Audio Capture - Updated syscall field to SYSCALL in order to make use of enriched logs update: ASLR Disabled Via Sysctl or Direct Syscall - Linux - Updated syscall field to SYSCALL in order to make use of enriched logs update: Clear or Disable Kernel Ring Buffer Logs via Syslog Syscall - Updated syscall field to SYSCALL in order to make use of enriched logs update: System Info Discovery via Sysinfo Syscall - Updated syscall field to SYSCALL in order to make use of enriched logs update: Special File Creation via Mknod Syscall - Updated syscall field to SYSCALL in order to make use of enriched logs update: Webshell Remote Command Execution - Updated syscall field to SYSCALL in order to make use of enriched logs
27 lines
746 B
YAML
27 lines
746 B
YAML
title: Overwriting the File with Dev Zero or Null
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id: 37222991-11e9-4b6d-8bdf-60fbe48f753e
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status: stable
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description: Detects overwriting (effectively wiping/deleting) of a file.
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references:
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- https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1485/T1485.md
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author: Jakob Weinzettl, oscd.community
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date: 2019-10-23
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tags:
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- attack.impact
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- attack.t1485
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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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selection:
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type: 'EXECVE'
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a0|contains: 'dd'
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a1|contains:
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- 'if=/dev/null'
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- 'if=/dev/zero'
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condition: selection
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falsepositives:
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- Appending null bytes to files.
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- Legitimate overwrite of files.
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level: low
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