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.

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Indexed Rules

3,707

Ready to search

Backends

Live from sigconverter.io

CLI Versions

Newest: 2.0.2

Translation Workspace

Shape the rule before it leaves Phoenix

Tune Translation

Active Rule

MSSQL Server Failed Logon

sigma-cli version

Backend

Format

Target Profile

Splunk

Splunk SPL & tstats data model queries

Format Mode

Default

Plain SPL queries

Conversion Output

MSSQL Server Failed Logon

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: MSSQL Server Failed Logon
id: 218d2855-2bba-4f61-9c85-81d0ea63ac71
related:
    - id: ebfe73c2-5bc9-4ed9-aaa8-8b54b2b4777d
      type: similar
status: test
description: Detects failed logon attempts from clients to MSSQL server.
references:
    - https://cybersecthreat.com/2020/07/08/enable-mssql-authentication-log-to-eventlog/
    - https://www.experts-exchange.com/questions/27800944/EventID-18456-Failed-to-open-the-explicitly-specified-database.html
author: Nasreddine Bencherchali (Nextron Systems), j4son
date: 2023-10-11
modified: 2024-06-26
tags:
    - attack.credential-access
    - attack.t1110
logsource:
    product: windows
    service: application
    definition: 'Requirements: Must enable MSSQL authentication.'
detection:
    selection:
        Provider_Name|contains: 'MSSQL' # Note: We use contains to account for other third party providers - See https://github.com/SigmaHQ/sigma/issues/4876
        EventID: 18456
    condition: selection
falsepositives:
    - This event could stem from users changing an account's password that's used to authenticate via a job or an automated process. Investigate the source of such events and mitigate them
level: low

CLI command

Copy the exact command to reproduce this translation locally.

sigma convert --without-pipeline -t splunk -f default rules/windows/builtin/application/mssqlserver/win_mssql_failed_logon.yml