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
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Backends
17
Live from sigconverter.io
CLI Versions
10
Newest: 2.0.2
Translation Workspace
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Active Rule
Dynamic .NET Compilation Via Csc.EXE - Hunting
Target Profile
Splunk
Splunk SPL & tstats data model queries
Format Mode
Default
Plain SPL queries
Conversion Output
Dynamic .NET Compilation Via Csc.EXE - Hunting
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: Dynamic .NET Compilation Via Csc.EXE - Hunting
id: acf2807c-805b-4042-aab9-f86b6ba9cb2b
related:
- id: dcaa3f04-70c3-427a-80b4-b870d73c94c4
type: derived
status: test
description: Detects execution of "csc.exe" to compile .NET code. Attackers often leverage this to compile code on the fly and use it in other stages.
references:
- https://securityboulevard.com/2019/08/agent-tesla-evading-edr-by-removing-api-hooks/
- https://www.clearskysec.com/wp-content/uploads/2018/11/MuddyWater-Operations-in-Lebanon-and-Oman.pdf
- https://app.any.run/tasks/c6993447-d1d8-414e-b856-675325e5aa09/
- https://twitter.com/gN3mes1s/status/1206874118282448897
author: Nasreddine Bencherchali (Nextron Systems)
date: 2023-08-02
tags:
- attack.defense-evasion
- attack.t1027.004
- detection.threat-hunting
logsource:
category: process_creation
product: windows
detection:
selection:
Image|endswith: '\csc.exe'
CommandLine|contains: '/noconfig /fullpaths @'
condition: selection
falsepositives:
- Many legitimate applications make use of dynamic compilation. Use this rule to hunt for anomalies
level: medium
CLI command
Copy the exact command to reproduce this translation locally.
sigma convert --without-pipeline -t splunk -f default rules-threat-hunting/windows/process_creation/proc_creation_win_csc_compilation.yml