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

Hide Schedule Task Via Index Value Tamper

sigma-cli version

Backend

Format

Target Profile

Splunk

Splunk SPL & tstats data model queries

Format Mode

Default

Plain SPL queries

Conversion Output

Hide Schedule Task Via Index Value Tamper

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: Hide Schedule Task Via Index Value Tamper
id: 5b16df71-8615-4f7f-ac9b-6c43c0509e61
related:
    - id: acd74772-5f88-45c7-956b-6a7b36c294d2
      type: similar
    - id: 526cc8bc-1cdc-48ad-8b26-f19bff969cec
      type: similar
status: test
description: |
  Detects when the "index" value of a scheduled task is modified from the registry
  Which effectively hides it from any tooling such as "schtasks /query" (Read the referenced link for more information about the effects of this technique)
references:
    - https://blog.qualys.com/vulnerabilities-threat-research/2022/06/20/defending-against-scheduled-task-attacks-in-windows-environments
author: Nasreddine Bencherchali (Nextron Systems)
date: 2022-08-26
modified: 2023-08-17
tags:
    - attack.defense-evasion
    - attack.t1562
logsource:
    category: registry_set
    product: windows
detection:
    selection:
        TargetObject|contains|all:
            - '\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Schedule\TaskCache\Tree\'
            - 'Index'
        Details: DWORD (0x00000000)
    condition: selection
falsepositives:
    - Unlikely
level: high

CLI command

Copy the exact command to reproduce this translation locally.

sigma convert --without-pipeline -t splunk -f default rules/windows/registry/registry_set/registry_set_hide_scheduled_task_via_index_tamper.yml