Nasreddine Bencherchali
598d29f811
chore: change tags, date, modified fields to comply with v2 of the Sigma spec. chore: update the related type from `obsoletes` to `obsolete`. chore: update local json schema to the latest version.
33 lines
996 B
YAML
33 lines
996 B
YAML
title: File Download Via Nscurl - MacOS
|
|
id: 6d8a7cf1-8085-423b-b87d-7e880faabbdf
|
|
status: experimental
|
|
description: Detects the execution of the nscurl utility in order to download files.
|
|
references:
|
|
- https://www.loobins.io/binaries/nscurl/
|
|
- https://www.agnosticdev.com/content/how-diagnose-app-transport-security-issues-using-nscurl-and-openssl
|
|
- https://gist.github.com/nasbench/ca6ef95db04ae04ffd1e0b1ce709cadd
|
|
author: Daniel Cortez
|
|
date: 2024-06-04
|
|
tags:
|
|
- attack.defense-evasion
|
|
- attack.command-and-control
|
|
- attack.t1105
|
|
logsource:
|
|
category: process_creation
|
|
product: macos
|
|
detection:
|
|
selection:
|
|
Image|endswith: '/nscurl'
|
|
CommandLine|contains:
|
|
- '--download '
|
|
- '--download-directory '
|
|
- '--output '
|
|
- '-dir '
|
|
- '-dl '
|
|
- '-ld'
|
|
- '-o '
|
|
condition: selection
|
|
falsepositives:
|
|
- Legitimate usage of nscurl by administrators and users.
|
|
level: medium
|