Compress Data and Lock With Password for Exfiltration With 7-ZIP

 1title: Compress Data and Lock With Password for Exfiltration With 7-ZIP
 2id: 9fbf5927-5261-4284-a71d-f681029ea574
 3status: test
 4description: An adversary may compress or encrypt data that is collected prior to exfiltration using 3rd party utilities
 5references:
 6    - https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1560.001/T1560.001.md
 7author: frack113
 8date: 2021/07/27
 9modified: 2023/03/13
10tags:
11    - attack.collection
12    - attack.t1560.001
13logsource:
14    category: process_creation
15    product: windows
16detection:
17    selection_img:
18        - Description|contains: '7-Zip'
19        - Image|endswith:
20              - '\7z.exe'
21              - '\7zr.exe'
22              - '\7za.exe'
23        - OriginalFileName:
24              - '7z.exe'
25              - '7za.exe'
26    selection_password:
27        CommandLine|contains: ' -p'
28    selection_action:
29        CommandLine|contains:
30            - ' a '
31            - ' u '
32    condition: all of selection_*
33falsepositives:
34    - Legitimate activity is expected since compressing files with a password is common.
35level: medium