Potentially Suspicious Compression Tool Parameters

Detects potentially suspicious command line arguments of common data compression tools

Detection logic

selection

OriginalFileName:
  - 7z*.exe
  - "*rar.exe"
  - "*Command*Line*RAR*"
CommandLine|contains:
  - " -p"
  - " -ta"
  - " -tb"
  - " -sdel"
  - " -dw"
  - " -hp"

filter_main_generic

ParentImage|contains:
  - :\Program Files\
  - :\Program Files (x86)\

Condition

selection and not 1 of filter_main_*

Raw YAML

title: Potentially Suspicious Compression Tool Parameters
id: 27a72a60-7e5e-47b1-9d17-909c9abafdcd
status: test
description: Detects potentially suspicious command line arguments of common data compression tools
references:
    - https://twitter.com/SBousseaden/status/1184067445612535811
author: Florian Roth (Nextron Systems), Samir Bousseaden
date: 2019-10-15
modified: 2023-08-29
tags:
    - attack.collection
    - attack.t1560.001
    - detection.threat-hunting
logsource:
    category: process_creation
    product: windows
detection:
    selection:
        OriginalFileName:
            - '7z*.exe'
            - '*rar.exe'
            - '*Command*Line*RAR*'
        CommandLine|contains:
            - ' -p'
            - ' -ta'
            - ' -tb'
            - ' -sdel'
            - ' -dw'
            - ' -hp'
    filter_main_generic:
        ParentImage|contains:
            - ':\Program Files\'
            - ':\Program Files (x86)\'
    condition: selection and not 1 of filter_main_*
falsepositives:
    - Unknown
level: medium