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
Uncommon Network Connection Initiated By Certutil.EXE
Target Profile
Splunk
Splunk SPL & tstats data model queries
Format Mode
Default
Plain SPL queries
Conversion Output
Uncommon Network Connection Initiated By Certutil.EXE
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: Uncommon Network Connection Initiated By Certutil.EXE
id: 0dba975d-a193-4ed1-a067-424df57570d1
status: test
description: |
Detects a network connection initiated by the certutil.exe utility.
Attackers can abuse the utility in order to download malware or additional payloads.
references:
- https://learn.microsoft.com/en-us/windows-server/administration/windows-commands/certutil
author: frack113, Florian Roth (Nextron Systems)
date: 2022-09-02
modified: 2024-05-31
tags:
- attack.command-and-control
- attack.t1105
logsource:
category: network_connection
product: windows
detection:
selection:
Image|endswith: '\certutil.exe'
Initiated: 'true'
DestinationPort:
- 80
- 135
- 443
- 445
condition: selection
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/network_connection/net_connection_win_certutil_initiated_connection.yml