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
Mailbox Export to Exchange Webserver
Target Profile
Splunk
Splunk SPL & tstats data model queries
Format Mode
Default
Plain SPL queries
Conversion Output
Mailbox Export to Exchange Webserver
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: Mailbox Export to Exchange Webserver
id: 516376b4-05cd-4122-bae0-ad7641c38d48
status: test
description: Detects a successful export of an Exchange mailbox to untypical directory or with aspx name suffix which can be used to place a webshell or the needed role assignment for it
references:
- https://blog.orange.tw/2021/08/proxylogon-a-new-attack-surface-on-ms-exchange-part-1.html
author: Florian Roth (Nextron Systems), Rich Warren, Christian Burkard (Nextron Systems)
date: 2021-08-09
modified: 2023-04-30
tags:
- attack.persistence
- attack.t1505.003
logsource:
service: msexchange-management
product: windows
detection:
export_command:
'|all':
- 'New-MailboxExportRequest'
- ' -Mailbox '
export_params:
- '-FilePath "\\\\' # We care about any share location.
- '.aspx'
role_assignment:
'|all':
- 'New-ManagementRoleAssignment'
- ' -Role "Mailbox Import Export"'
- ' -User '
condition: (export_command and export_params) or role_assignment
falsepositives:
- Unlikely
level: critical
CLI command
Copy the exact command to reproduce this translation locally.
sigma convert --without-pipeline -t splunk -f default rules/windows/builtin/msexchange/win_exchange_proxyshell_mailbox_export.yml