Phoenix Studio
Convert indexed Sigma rules into analyst-ready detections.
This studio is built around Phoenix's own rule corpus, not a blank editor. Search by title or rule id, choose a live sigma-cli backend, then reveal pipelines only when you actually need them.
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
Browser Execution In Headless Mode
Target Profile
Splunk
Splunk SPL & tstats data model queries
Format Mode
Default
Plain SPL queries
Conversion Output
Browser Execution In Headless Mode
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: Browser Execution In Headless Mode
id: ef9dcfed-690c-4c5d-a9d1-482cd422225c
related:
- id: 0e8cfe08-02c9-4815-a2f8-0d157b7ed33e
type: derived
status: test
description: Detects execution of Chromium based browser in headless mode
references:
- https://twitter.com/mrd0x/status/1478234484881436672?s=12
- https://www.trendmicro.com/en_us/research/23/e/managed-xdr-investigation-of-ducktail-in-trend-micro-vision-one.html
author: Nasreddine Bencherchali (Nextron Systems)
date: 2023-09-12
tags:
- attack.defense-evasion
- attack.command-and-control
- attack.t1105
- attack.t1564.003
logsource:
category: process_creation
product: windows
detection:
selection:
Image|endswith:
- '\brave.exe'
- '\chrome.exe'
- '\msedge.exe'
- '\opera.exe'
- '\vivaldi.exe'
CommandLine|contains: '--headless'
condition: selection
falsepositives:
- Unknown
level: low
CLI command
Copy the exact command to reproduce this translation locally.
sigma convert --without-pipeline -t splunk -f default rules/windows/process_creation/proc_creation_win_browsers_chromium_headless_exec.yml