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.
Indexed Rules
3,707
Ready to search
Backends
17
Live from sigconverter.io
CLI Versions
10
Newest: 2.0.2
Translation Workspace
Shape the rule before it leaves Phoenix
Tune Translation
Active Rule
CobaltStrike Load by Rundll32
Target Profile
Splunk
Splunk SPL & tstats data model queries
Format Mode
Default
Plain SPL queries
Conversion Output
CobaltStrike Load by Rundll32
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: CobaltStrike Load by Rundll32
id: ae9c6a7c-9521-42a6-915e-5aaa8689d529
status: test
description: Rundll32 can be use by Cobalt Strike with StartW function to load DLLs from the command line.
references:
- https://www.cobaltstrike.com/help-windows-executable
- https://redcanary.com/threat-detection-report/
- https://thedfirreport.com/2020/10/18/ryuk-in-5-hours/
author: Wojciech Lesicki
date: 2021-06-01
modified: 2022-09-16
tags:
- attack.defense-evasion
- attack.t1218.011
logsource:
category: process_creation
product: windows
detection:
selection_rundll:
- Image|endswith: '\rundll32.exe'
- OriginalFileName: RUNDLL32.EXE
- CommandLine|contains:
- 'rundll32.exe'
- 'rundll32 '
selection_params:
CommandLine|contains: '.dll'
CommandLine|endswith:
- ' StartW'
- ',StartW'
condition: all 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/process_creation/proc_creation_win_hktl_cobaltstrike_load_by_rundll32.yml