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

Terminal Server Client Connection History Cleared - Registry

sigma-cli version

Backend

Format

Target Profile

Splunk

Splunk SPL & tstats data model queries

Format Mode

Default

Plain SPL queries

Conversion Output

Terminal Server Client Connection History Cleared - Registry

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: Terminal Server Client Connection History Cleared - Registry
id: 07bdd2f5-9c58-4f38-aec8-e101bb79ef8d
status: test
description: Detects the deletion of registry keys containing the MSTSC connection history
references:
    - https://learn.microsoft.com/en-us/troubleshoot/windows-server/remote/remove-entries-from-remote-desktop-connection-computer
    - http://woshub.com/how-to-clear-rdp-connections-history/
    - https://www.trendmicro.com/en_us/research/23/a/vice-society-ransomware-group-targets-manufacturing-companies.html
author: Christian Burkard (Nextron Systems)
date: 2021-10-19
modified: 2023-02-08
tags:
    - attack.persistence
    - attack.defense-evasion
    - attack.t1070
    - attack.t1112
logsource:
    category: registry_delete
    product: windows
detection:
    selection1:
        EventType: DeleteValue
        TargetObject|contains: '\Microsoft\Terminal Server Client\Default\MRU'
    selection2:
        EventType: DeleteKey
        TargetObject|contains: '\Microsoft\Terminal Server Client\Servers\'
    condition: 1 of 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/registry/registry_delete/registry_delete_mstsc_history_cleared.yml