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
Suspicious Kerberos Ticket Request via CLI
Target Profile
Splunk
Splunk SPL & tstats data model queries
Format Mode
Default
Plain SPL queries
Conversion Output
Suspicious Kerberos Ticket Request via CLI
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: Suspicious Kerberos Ticket Request via CLI
id: caa9a802-8bd8-4b9e-a5cd-4d6221670219
related:
- id: a861d835-af37-4930-bcd6-5b178bfb54df
type: similar
status: experimental
description: |
Detects suspicious Kerberos ticket requests via command line using System.IdentityModel.Tokens.KerberosRequestorSecurityToken class.
Threat actors may use command line interfaces to request Kerberos tickets for service accounts in order to
perform offline password cracking attacks commonly known as Kerberoasting or other Kerberos ticket abuse
techniques like silver ticket attacks.
references:
- https://www.huntress.com/blog/gootloader-threat-detection-woff2-obfuscation
- https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1558.003/T1558.003.md#atomic-test-4---request-a-single-ticket-via-powershell
- https://learn.microsoft.com/en-us/dotnet/api/system.identitymodel.tokens.kerberosrequestorsecuritytoken?view=netframework-4.8.1
author: Swachchhanda Shrawan Poudel (Nextron Systems)
date: 2025-11-18
tags:
- attack.credential-access
- attack.t1558.003
logsource:
category: process_creation
product: windows
detection:
selection_img:
- Image|endswith:
- '\powershell.exe'
- '\pwsh.exe'
- OriginalFileName:
- 'powershell.exe'
- 'pwsh.dll'
selection_cli:
CommandLine|contains|all:
- 'System.IdentityModel.Tokens.KerberosRequestorSecurityToken'
- '.GetRequest()'
condition: all of selection_*
falsepositives:
- Legitimate command line usage by administrators or security tools.
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_powershell_kerberos_kerberos_ticket_request_via_cli.yml