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
Bitsadmin to Uncommon TLD
Target Profile
Splunk
Splunk SPL & tstats data model queries
Format Mode
Default
Plain SPL queries
Conversion Output
Bitsadmin to Uncommon TLD
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: Bitsadmin to Uncommon TLD
id: 9eb68894-7476-4cd6-8752-23b51f5883a7
status: test
description: Detects Bitsadmin connections to domains with uncommon TLDs
references:
- https://twitter.com/jhencinski/status/1102695118455349248
- https://isc.sans.edu/forums/diary/Investigating+Microsoft+BITS+Activity/23281/
author: Florian Roth (Nextron Systems), Tim Shelton
date: 2019-03-07
modified: 2023-05-17
tags:
- attack.command-and-control
- attack.t1071.001
- attack.defense-evasion
- attack.persistence
- attack.t1197
- attack.s0190
logsource:
category: proxy
detection:
selection:
c-useragent|startswith: 'Microsoft BITS/'
falsepositives:
cs-host|endswith:
- '.com'
- '.net'
- '.org'
- '.scdn.co' # spotify streaming
- '.sfx.ms' # Microsoft domain, example request: https://oneclient.sfx.ms/PreSignInSettings/Prod/2022-08-15-21-xx-xx/PreSignInSettingsConfig.json
condition: selection and not falsepositives
falsepositives:
- Rare programs that use Bitsadmin and update from regional TLDs e.g. .uk or .ca
level: high
CLI command
Copy the exact command to reproduce this translation locally.
sigma convert --without-pipeline -t splunk -f default rules/web/proxy_generic/proxy_ua_bitsadmin_susp_tld.yml