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
Unsigned or Unencrypted SMB Connection to Share Established
Target Profile
Splunk
Splunk SPL & tstats data model queries
Format Mode
Default
Plain SPL queries
Conversion Output
Unsigned or Unencrypted SMB Connection to Share Established
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: Unsigned or Unencrypted SMB Connection to Share Established
id: 8d91f6e4-9f3b-4c21-ae41-2c5b7d9f7a12
status: experimental
description: |
Detects SMB server connections to shares without signing or encryption enabled.
This could indicate potential lateral movement activity using unsecured SMB shares.
author: Mohamed Abdelghani
date: 2025-10-19
references:
- https://learn.microsoft.com/en-us/troubleshoot/windows-server/networking/overview-server-message-block-signing
tags:
- attack.lateral-movement
- attack.t1021.002
logsource:
product: windows
service: smbserver-connectivity
detection:
selection_shares:
EventID: 4000
ShareName|contains:
- 'IPC$'
- 'ADMIN$'
- 'C$'
selection_status:
- SigningUsed: 'false'
- EncyptionUsed: 'false' # Note: typo in the original event field name
filter_main_local_ips:
- ClientAddress|cidr:
# IPv4
# - '10.0.0.0/8'
- '127.0.0.0/8'
- '169.254.0.0/16'
# - '172.16.0.0/12'
# - '192.168.0.0/16'
# IPv6
- '::1/128' # IPv6 loopback
- 'fe80::/10' # IPv6 link-local addresses
- 'fc00::/7' # IPv6 private addresses
# The filters below cover the XML raw log
- ClientAddress|contains:
# IPv6
- '00000000000000000000000000000001' # ::1 - IPv6 loopback
- 'FE80000000000000' # fe80:: - IPv6 link-local addresses
- 'FC00000000000000' # fc00:: - IPv6 private addresses
# IPv4
# The "?" are meant to represent the port
# - '0200????C0A8' # 192.168.
# - '0200????AC' # 172.
# - '0200????0A' # 10.
- '0200????7F' # 127
- '0200????A9FE' # 169.254.
condition: all of selection_* and not 1 of filter_main_*
falsepositives:
- Connections from local or private IP addresses to SMB shares without signing or encryption enabled for older systems or misconfigured environments. Apply additional tuning as needed.
level: medium
CLI command
Copy the exact command to reproduce this translation locally.
sigma convert --without-pipeline -t splunk -f default rules/windows/builtin/smbserver/connectivity/win_smbserver_connectivity_unsigned_and_unencrypted_share_connection.yml