Galapag0s
1e4ef648db
history -w will clear the current shell history shred purposely overwrites data replacing it with random data
31 lines
961 B
YAML
31 lines
961 B
YAML
title: Clear Command History
|
|
status: experimental
|
|
description: Clear command history in linux which is used for defense evasion.
|
|
references:
|
|
- https://github.com/redcanaryco/atomic-red-team/blob/master/atomics/T1146/T1146.yaml
|
|
- https://attack.mitre.org/techniques/T1146/
|
|
- https://www.hackers-arise.com/single-post/2016/06/20/Covering-your-BASH-Shell-Tracks-AntiForensics
|
|
author: Patrick Bareiss
|
|
date: 2019/03/24
|
|
logsource:
|
|
product: linux
|
|
detection:
|
|
keywords:
|
|
- 'rm *bash_history'
|
|
- 'echo "" > *bash_history'
|
|
- 'cat /dev/null > *bash_history'
|
|
- 'ln -sf /dev/null *bash_history'
|
|
- 'truncate -s0 *bash_history'
|
|
# - 'unset HISTFILE' # prone to false positives
|
|
- 'export HISTFILESIZE=0'
|
|
- 'history -c'
|
|
- 'history -w'
|
|
- 'shred *bash_history'
|
|
condition: keywords
|
|
falsepositives:
|
|
- Unknown
|
|
level: high
|
|
tags:
|
|
- attack.defense_evasion
|
|
- attack.t1146
|