Phoenix Studio
Convert indexed Sigma rules into analyst-ready detections.
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Indexed Rules
3,707
Ready to search
Backends
17
Live from sigconverter.io
CLI Versions
10
Newest: 2.0.2
Translation Workspace
Shape the rule before it leaves Phoenix
Tune Translation
Active Rule
File Download Via Nscurl - MacOS
Target Profile
Splunk
Splunk SPL & tstats data model queries
Format Mode
Default
Plain SPL queries
Conversion Output
File Download Via Nscurl - MacOS
Using Splunk · Default · sigma-cli 2.0.2
Translation controls
Adjust the rule on the left, then regenerate when you want a fresh backend-native query.
BackendSplunkFormatDefaultVersion2.0.2
title: File Download Via Nscurl - MacOS
id: 6d8a7cf1-8085-423b-b87d-7e880faabbdf
status: test
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
CLI command
Copy the exact command to reproduce this translation locally.
sigma convert --without-pipeline -t splunk -f default rules/macos/process_creation/proc_creation_macos_nscurl_usage.yml