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

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Backends

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CLI Versions

Newest: 2.0.2

Translation Workspace

Shape the rule before it leaves Phoenix

Tune Translation

Active Rule

Mshtml.DLL RunHTMLApplication Suspicious Usage

sigma-cli version

Backend

Format

Target Profile

Splunk

Splunk SPL & tstats data model queries

Format Mode

Default

Plain SPL queries

Conversion Output

Mshtml.DLL RunHTMLApplication Suspicious Usage

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: Mshtml.DLL RunHTMLApplication Suspicious Usage
id: 4782eb5a-a513-4523-a0ac-f3082b26ac5c
related:
    - id: 9f06447a-a33a-4cbe-a94f-a3f43184a7a3
      type: obsolete
    - id: 73fcad2e-ff14-4c38-b11d-4172c8ac86c7
      type: obsolete
status: test
description: |
    Detects execution of commands that leverage the "mshtml.dll" RunHTMLApplication export to run arbitrary code via different protocol handlers (vbscript, javascript, file, http...)
references:
    - https://twitter.com/n1nj4sec/status/1421190238081277959
    - https://hyp3rlinx.altervista.org/advisories/MICROSOFT_WINDOWS_DEFENDER_TROJAN.WIN32.POWESSERE.G_MITIGATION_BYPASS_PART2.txt
    - http://hyp3rlinx.altervista.org/advisories/MICROSOFT_WINDOWS_DEFENDER_DETECTION_BYPASS.txt
author: Nasreddine Bencherchali (Nextron Systems),  Florian Roth (Nextron Systems), Josh Nickels, frack113, Zaw Min Htun (ZETA)
date: 2022-08-14
modified: 2024-02-23
tags:
    - attack.defense-evasion
    - attack.execution
logsource:
    category: process_creation
    product: windows
detection:
    selection:
        CommandLine|contains|all:
            - '\..\'
            - 'mshtml'
        CommandLine|contains:
            - '#135'
            - 'RunHTMLApplication'
    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/process_creation/proc_creation_win_rundll32_mshtml_runhtmlapplication.yml