Possible Curl Use on Linux (via process_creation)
This rule detects a curl process start on linux, which suggests a file download from a remote location or a simple web request to a remote server
SigmalowLinuxv1
sigma
possible-curl-use-on-linux-via-process-creation
title: Possible Curl Use on Linux (via process_creation)
id: 331e2b80-3bba-5827-9c23-93fe66c7378f
status: stable
description: This rule detects a curl process start on linux, which suggests a file download from a remote location or a simple web request to a remote server
references:
- https://attack.mitre.org/techniques/T1105/
- https://www.trendmicro.com/en_us/research/22/i/how-malicious-actors-abuse-native-linux-tools-in-their-attacks.html
author: Huntrule Team
date: 2026-07-03
tags:
- attack.command-and-control
- attack.t1105
logsource:
category: process_creation
product: linux
detection:
selection:
Image|endswith: '/curl'
condition: selection
falsepositives:
- Unknown
level: low
Known false positives
- Unknown
Detection content is published as a reviewed draft. Tune thresholds and exclusions against your own telemetry before enabling this rule for alerting.