Local File Read Using Curl.EXE

Description

Detects execution of "curl.exe" with the "file://" protocol handler in order to read local files.

Query · sigma

selection_img:
- Image|endswith: \curl.exe
- OriginalFileName: curl.exe
selection_cli:
  CommandLine|contains: file:///
condition: all of selection_*

Known false positives

  • Unknown
Raw source Local File Read Using Curl.EXE · Sigma
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Published by SigmaHQ/sigma ↗, licensed under Detection Rule License 1.1 ↗. Reproduced here unmodified. 
title: Local File Read Using Curl.EXE
id: aa6f6ea6-0676-40dd-b510-6e46f02d8867
status: test
description: Detects execution of "curl.exe" with the "file://" protocol handler in order to read local files.
references:
    - https://curl.se/docs/manpage.html
author: Nasreddine Bencherchali (Nextron Systems)
date: 2023-07-27
tags:
    - attack.execution
logsource:
    product: windows
    category: process_creation
detection:
    selection_img:
        - Image|endswith: '\curl.exe'
        - OriginalFileName: 'curl.exe'
    selection_cli:
        CommandLine|contains: 'file:///'
    condition: all of selection_*
falsepositives:
    - Unknown
level: medium
regression_tests_path: regression_data/rules/windows/process_creation/proc_creation_win_curl_local_file_read/info.yml

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