Detection rules › Sigma
Curl Usage on Linux
Detects a curl process start on linux, which indicates a file download from a remote location or a simple web request to a remote server
MITRE ATT&CK coverage
| Tactic | Techniques |
|---|---|
| Command & Control | T1105 Ingress Tool Transfer |
Event coverage
| Provider | Event |
|---|---|
| Sysmon-for-Linux | Event ID 1 |
Rule body yaml
title: Curl Usage on Linux
id: ea34fb97-e2c4-4afb-810f-785e4459b194
status: test
description: Detects a curl process start on linux, which indicates a file download from a remote location or a simple web request to a remote server
references:
- https://www.trendmicro.com/en_us/research/22/i/how-malicious-actors-abuse-native-linux-tools-in-their-attacks.html
author: Nasreddine Bencherchali (Nextron Systems)
date: 2022-09-15
tags:
- attack.command-and-control
- attack.t1105
logsource:
category: process_creation
product: linux
detection:
selection:
Image|endswith: '/curl'
condition: selection
falsepositives:
- Scripts created by developers and admins
- Administrative activity
level: low
Stages and Predicates
Stage 0: condition
selectionStage 1: selection
selection:
Image|endswith: '/curl'
Indicators
Each row is a field, operator, and value that the rule matches. The corpus column counts how many other rules in the catalog look for the same combination: high numbers point to widely-used, community-vetted indicators. Blank or 1 shows that the indicator is specific to this rule.
| Field | Kind | Values |
|---|---|---|
Image | ends_with |
|