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Newest: 2.0.2

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Active Rule

Suspicious Rundll32 Setupapi.dll Activity

sigma-cli version

Backend

Format

Target Profile

Splunk

Splunk SPL & tstats data model queries

Format Mode

Default

Plain SPL queries

Conversion Output

Suspicious Rundll32 Setupapi.dll Activity

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 Rundll32 Setupapi.dll Activity
id: 285b85b1-a555-4095-8652-a8a4106af63f
status: test
description: setupapi.dll library provide InstallHinfSection function for processing INF files. INF file may contain instructions allowing to create values in the registry, modify files and install drivers. This technique could be used to obtain persistence via modifying one of Run or RunOnce registry keys, run process or use other DLLs chain calls (see references) InstallHinfSection function in setupapi.dll calls runonce.exe executable regardless of actual content of INF file.
references:
    - https://lolbas-project.github.io/lolbas/Libraries/Setupapi/
    - https://gist.githubusercontent.com/bohops/0cc6586f205f3691e04a1ebf1806aabd/raw/baf7b29891bb91e76198e30889fbf7d6642e8974/calc_exe.inf
    - https://raw.githubusercontent.com/huntresslabs/evading-autoruns/master/shady.inf
    - https://twitter.com/Z3Jpa29z/status/1313742350292746241?s=20
author: Konstantin Grishchenko, oscd.community
date: 2020-10-07
modified: 2021-11-27
tags:
    - attack.defense-evasion
    - attack.t1218.011
logsource:
    category: process_creation
    product: windows
detection:
    selection:
        Image|endswith: '\runonce.exe'
        ParentImage|endswith: '\rundll32.exe'
        ParentCommandLine|contains|all:
            - 'setupapi.dll'
            - 'InstallHinfSection'
    condition: selection
falsepositives:
    - Scripts and administrative tools that use INF files for driver installation with setupapi.dll
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_rundll32_setupapi_installhinfsection.yml