Phoenix Studio
Convert indexed Sigma rules into analyst-ready detections.
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Indexed Rules
3,707
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Backends
17
Live from sigconverter.io
CLI Versions
10
Newest: 2.0.2
Translation Workspace
Shape the rule before it leaves Phoenix
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Active Rule
Potential File Download Via MS-AppInstaller Protocol Handler
Target Profile
Splunk
Splunk SPL & tstats data model queries
Format Mode
Default
Plain SPL queries
Conversion Output
Potential File Download Via MS-AppInstaller Protocol Handler
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: Potential File Download Via MS-AppInstaller Protocol Handler
id: 180c7c5c-d64b-4a63-86e9-68910451bc8b
related:
- id: 7cff77e1-9663-46a3-8260-17f2e1aa9d0a
type: derived
status: test
description: |
Detects usage of the "ms-appinstaller" protocol handler via command line to potentially download arbitrary files via AppInstaller.EXE
The downloaded files are temporarly stored in ":\Users\%username%\AppData\Local\Packages\Microsoft.DesktopAppInstaller_8wekyb3d8bbwe\AC\INetCache\<RANDOM-8-CHAR-DIRECTORY>"
references:
- https://lolbas-project.github.io/lolbas/Binaries/AppInstaller/
author: Nasreddine Bencherchali (Nextron Systems), Swachchhanda Shrawan Poudel
date: 2023-11-09
tags:
- attack.defense-evasion
- attack.execution
- attack.t1218
logsource:
category: process_creation
product: windows
detection:
selection:
CommandLine|contains|all:
- 'ms-appinstaller://?source='
- 'http'
condition: selection
falsepositives:
- Unknown
level: medium
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_susp_ms_appinstaller_download.yml