Nasreddine Bencherchali
598d29f811
chore: change tags, date, modified fields to comply with v2 of the Sigma spec. chore: update the related type from `obsoletes` to `obsolete`. chore: update local json schema to the latest version.
35 lines
985 B
YAML
35 lines
985 B
YAML
title: Binary Padding - Linux
|
|
id: c52a914f-3d8b-4b2a-bb75-b3991e75f8ba
|
|
status: test
|
|
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.
|
|
references:
|
|
- https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1027.001/T1027.001.md
|
|
author: Igor Fits, oscd.community
|
|
date: 2020-10-13
|
|
modified: 2023-05-03
|
|
tags:
|
|
- attack.defense-evasion
|
|
- attack.t1027.001
|
|
logsource:
|
|
product: linux
|
|
service: auditd
|
|
detection:
|
|
selection_execve:
|
|
type: 'EXECVE'
|
|
keywords_truncate:
|
|
'|all':
|
|
- 'truncate'
|
|
- '-s'
|
|
keywords_dd:
|
|
'|all':
|
|
- 'dd'
|
|
- 'if='
|
|
keywords_filter:
|
|
- 'of='
|
|
condition: selection_execve and (keywords_truncate or (keywords_dd and not keywords_filter))
|
|
falsepositives:
|
|
- Unknown
|
|
level: high
|