Data Compressed
An adversary may compress data (e.g., sensitive documents) that is collected prior to exfiltration in order to make it portable and minimize the amount of data sent over the network.
Detection logic
selection1
type: execve
a0: zipselection2
type: execve
a0: gzip
a1: -kselection3
type: execve
a0: tar
a1|contains: -cCondition
1 of selection*Raw YAML
title: Data Compressed
id: a3b5e3e9-1b49-4119-8b8e-0344a01f21ee
status: test
description: An adversary may compress data (e.g., sensitive documents) that is collected prior to exfiltration in order to make it portable and minimize the amount of data sent over the network.
references:
- https://github.com/redcanaryco/atomic-red-team/blob/a78b9ed805ab9ea2e422e1aa7741e9407d82d7b1/atomics/T1560.001/T1560.001.md
author: Timur Zinniatullin, oscd.community
date: 2019-10-21
modified: 2023-07-28
tags:
- attack.exfiltration
- attack.collection
- attack.t1560.001
logsource:
product: linux
service: auditd
detection:
selection1:
type: 'execve'
a0: 'zip'
selection2:
type: 'execve'
a0: 'gzip'
a1: '-k'
selection3:
type: 'execve'
a0: 'tar'
a1|contains: '-c'
condition: 1 of selection*
falsepositives:
- Legitimate use of archiving tools by legitimate user.
level: lowFalse positives
- Legitimate use of archiving tools by legitimate user.