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
Network Connection Initiated Via Notepad.EXE
Target Profile
Splunk
Splunk SPL & tstats data model queries
Format Mode
Default
Plain SPL queries
Conversion Output
Network Connection Initiated Via Notepad.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: Network Connection Initiated Via Notepad.EXE
id: e81528db-fc02-45e8-8e98-4e84aba1f10b
status: test
description: |
Detects a network connection that is initiated by the "notepad.exe" process.
This might be a sign of process injection from a beacon process or something similar.
Notepad rarely initiates a network communication except when printing documents for example.
references:
- https://web.archive.org/web/20200219102749/https://www.sans.org/cyber-security-summit/archives/file/summit-archive-1492186586.pdf
- https://www.cobaltstrike.com/blog/why-is-notepad-exe-connecting-to-the-internet
author: EagleEye Team
date: 2020-05-14
modified: 2024-02-02
tags:
- attack.privilege-escalation
- attack.command-and-control
- attack.execution
- attack.defense-evasion
- attack.t1055
logsource:
category: network_connection
product: windows
detection:
selection:
Image|endswith: '\notepad.exe'
filter_optional_printing:
DestinationPort: 9100
condition: selection and not 1 of filter_optional_*
falsepositives:
- Printing documents via notepad might cause communication with the printer via port 9100 or similar.
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_notepad.yml