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Newest: 2.0.2
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Active Rule
Suspicious Msiexec Execute Arbitrary DLL
Target Profile
Splunk
Splunk SPL & tstats data model queries
Format Mode
Default
Plain SPL queries
Conversion Output
Suspicious Msiexec Execute Arbitrary DLL
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 Msiexec Execute Arbitrary DLL
id: 6f4191bb-912b-48a8-9ce7-682769541e6d
status: test
description: |
Adversaries may abuse msiexec.exe to proxy execution of malicious payloads.
Msiexec.exe is the command-line utility for the Windows Installer and is thus commonly associated with executing installation packages (.msi)
references:
- https://learn.microsoft.com/en-us/windows-server/administration/windows-commands/msiexec
- https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1218.007/T1218.007.md
- https://twitter.com/_st0pp3r_/status/1583914515996897281
author: frack113
date: 2022-01-16
modified: 2024-03-13
tags:
- attack.defense-evasion
- attack.t1218.007
logsource:
category: process_creation
product: windows
detection:
selection:
Image|endswith: '\msiexec.exe'
CommandLine|contains|windash: ' -y'
filter_apple:
CommandLine|contains:
- '\MsiExec.exe" /Y "C:\Program Files\Bonjour\mdnsNSP.dll'
- '\MsiExec.exe" /Y "C:\Program Files (x86)\Bonjour\mdnsNSP.dll'
- '\MsiExec.exe" /Y "C:\Program Files (x86)\Apple Software Update\ScriptingObjectModel.dll'
- '\MsiExec.exe" /Y "C:\Program Files (x86)\Apple Software Update\SoftwareUpdateAdmin.dll'
- '\MsiExec.exe" /Y "C:\Windows\CCM\'
- '\MsiExec.exe" /Y C:\Windows\CCM\' # also need non-quoted execution
- '\MsiExec.exe" -Y "C:\Program Files\Bonjour\mdnsNSP.dll'
- '\MsiExec.exe" -Y "C:\Program Files (x86)\Bonjour\mdnsNSP.dll'
- '\MsiExec.exe" -Y "C:\Program Files (x86)\Apple Software Update\ScriptingObjectModel.dll'
- '\MsiExec.exe" -Y "C:\Program Files (x86)\Apple Software Update\SoftwareUpdateAdmin.dll'
- '\MsiExec.exe" -Y "C:\Windows\CCM\'
- '\MsiExec.exe" -Y C:\Windows\CCM\' # also need non-quoted execution
condition: selection and not 1 of filter_*
falsepositives:
- Legitimate script
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_msiexec_execute_dll.yml