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
Suspicious Calculator Usage
Target Profile
Splunk
Splunk SPL & tstats data model queries
Format Mode
Default
Plain SPL queries
Conversion Output
Suspicious Calculator Usage
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: Suspicious Calculator Usage
id: 737e618a-a410-49b5-bec3-9e55ff7fbc15
status: test
description: |
Detects suspicious use of 'calc.exe' with command line parameters or in a suspicious directory, which is likely caused by some PoC or detection evasion.
references:
- https://twitter.com/ItsReallyNick/status/1094080242686312448
author: Florian Roth (Nextron Systems)
date: 2019-02-09
modified: 2023-11-09
tags:
- attack.defense-evasion
- attack.t1036
logsource:
category: process_creation
product: windows
detection:
selection_1:
CommandLine|contains: '\calc.exe '
selection_2:
Image|endswith: '\calc.exe'
filter_main_known_locations:
Image|contains:
- ':\Windows\System32\'
- ':\Windows\SysWOW64\'
- ':\Windows\WinSxS\'
condition: selection_1 or ( selection_2 and not filter_main_known_locations )
falsepositives:
- Unknown
level: high
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_calc_uncommon_exec.yml