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.

Browse Rules Explore Ecosystem

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

Important Scheduled Task Deleted

sigma-cli version

Backend

Format

Target Profile

Splunk

Splunk SPL & tstats data model queries

Format Mode

Default

Plain SPL queries

Conversion Output

Important Scheduled Task Deleted

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: Important Scheduled Task Deleted
id: 9e3cb244-bdb8-4632-8c90-6079c8f4f16d
related:
    - id: dbc1f800-0fe0-4bc0-9c66-292c2abe3f78 # ProcCreation schtasks delete
      type: similar
    - id: 7595ba94-cf3b-4471-aa03-4f6baa9e5fad # Security-Audting Eventlog
      type: similar
status: test
description: |
    Detects when adversaries try to stop system services or processes by deleting their respective scheduled tasks in order to conduct data destructive activities
references:
    - https://www.socinvestigation.com/most-common-windows-event-ids-to-hunt-mind-map/
author: frack113
date: 2023-01-13
modified: 2023-02-07
tags:
    - attack.impact
    - attack.t1489
logsource:
    product: windows
    service: taskscheduler
    definition: 'Requirements: The "Microsoft-Windows-TaskScheduler/Operational" is disabled by default and needs to be enabled in order for this detection to trigger'
detection:
    selection:
        EventID: 141
        TaskName|contains:
            - '\Windows\SystemRestore\SR'
            - '\Windows\Windows Defender\'
            - '\Windows\BitLocker'
            - '\Windows\WindowsBackup\'
            - '\Windows\WindowsUpdate\'
            - '\Windows\UpdateOrchestrator\'
            - '\Windows\ExploitGuard'
    filter:
        UserName|contains:
            - 'AUTHORI'
            - 'AUTORI'
    condition: selection and not filter
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/taskscheduler/win_taskscheduler_susp_schtasks_delete.yml