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
NetNTLM Downgrade Attack
Target Profile
Splunk
Splunk SPL & tstats data model queries
Format Mode
Default
Plain SPL queries
Conversion Output
NetNTLM Downgrade Attack
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: NetNTLM Downgrade Attack
id: d3abac66-f11c-4ed0-8acb-50cc29c97eed
related:
- id: d67572a0-e2ec-45d6-b8db-c100d14b8ef2
type: derived
status: test
description: Detects NetNTLM downgrade attack
references:
- https://www.optiv.com/blog/post-exploitation-using-netntlm-downgrade-attacks
author: Florian Roth (Nextron Systems), wagga
date: 2018-03-20
modified: 2022-10-09
tags:
- attack.persistence
- attack.defense-evasion
- attack.t1562.001
- attack.t1112
# Windows Security Eventlog: Process Creation with Full Command Line
logsource:
product: windows
service: security
definition: 'Requirements: Audit Policy : Object Access > Audit Registry (Success)'
detection:
selection:
EventID: 4657
ObjectName|contains|all:
- '\REGISTRY\MACHINE\SYSTEM'
- 'ControlSet'
- '\Control\Lsa'
ObjectValueName:
- 'LmCompatibilityLevel'
- 'NtlmMinClientSec'
- 'RestrictSendingNTLMTraffic'
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/builtin/security/win_security_net_ntlm_downgrade.yml