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 local pySigma backend, then reveal pipelines only when you actually need them.
Indexed Rules
3,731
Ready to search
Backends
17
Loaded from pysigma-node
pySigma Versions
10
Newest: 1.3.3
Translation Workspace
Shape the rule before it leaves Phoenix
Tune Translation
Active Rule
Suspicious Outbound SMTP Connections
Target Profile
Splunk
Splunk through pysigma-backend-splunk.
Format Mode
Default
Default pySigma output mode for this backend.
Conversion Output
Suspicious Outbound SMTP Connections
Using Splunk · Default · pySigma 1.3.3
Translation controls
Adjust the rule on the left, then regenerate when you want a fresh backend-native query.
BackendSplunkFormatDefaultVersion1.3.3
title: Suspicious Outbound SMTP Connections
id: 9976fa64-2804-423c-8a5b-646ade840773
status: test
description: |
Adversaries may steal data by exfiltrating it over an un-encrypted network protocol other than that of the existing command and control channel.
The data may also be sent to an alternate network location from the main command and control server.
references:
- https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1048.003/T1048.003.md#atomic-test-5---exfiltration-over-alternative-protocol---smtp
- https://www.ietf.org/rfc/rfc2821.txt
author: frack113
date: 2022-01-07
modified: 2022-09-21
tags:
- attack.exfiltration
- attack.t1048.003
logsource:
category: network_connection
product: windows
detection:
selection:
DestinationPort:
- 25
- 587
- 465
- 2525
Initiated: 'true'
filter_clients:
Image|endswith:
- \thunderbird.exe
- \outlook.exe
filter_mailserver:
Image|startswith: 'C:\Program Files\Microsoft\Exchange Server\'
filter_outlook:
Image|startswith: 'C:\Program Files\WindowsApps\microsoft.windowscommunicationsapps_'
Image|endswith: '\HxTsr.exe'
condition: selection and not 1 of filter_*
falsepositives:
- Other SMTP tools
level: medium
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_susp_outbound_smtp_connections.yml