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
OS Architecture Discovery Via Grep
Target Profile
Splunk
Splunk SPL & tstats data model queries
Format Mode
Default
Plain SPL queries
Conversion Output
OS Architecture Discovery Via Grep
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: OS Architecture Discovery Via Grep
id: d27ab432-2199-483f-a297-03633c05bae6
status: test
description: |
Detects the use of grep to identify information about the operating system architecture. Often combined beforehand with the execution of "uname" or "cat /proc/cpuinfo"
references:
- https://blogs.jpcert.or.jp/en/2023/05/gobrat.html
- https://jstnk9.github.io/jstnk9/research/GobRAT-Malware/
- https://www.virustotal.com/gui/file/60bcd645450e4c846238cf0e7226dc40c84c96eba99f6b2cffcd0ab4a391c8b3/detection
- https://www.virustotal.com/gui/file/3e44c807a25a56f4068b5b8186eee5002eed6f26d665a8b791c472ad154585d1/detection
author: Joseliyo Sanchez, @Joseliyo_Jstnk
date: 2023-06-02
tags:
- attack.discovery
- attack.t1082
logsource:
category: process_creation
product: linux
detection:
selection_process:
Image|endswith: '/grep'
selection_architecture:
CommandLine|endswith:
- 'aarch64'
- 'arm'
- 'i386'
- 'i686'
- 'mips'
- 'x86_64'
condition: all of 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/linux/process_creation/proc_creation_lnx_grep_os_arch_discovery.yml