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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
Tune Translation
Active Rule
Use of Pcalua For Execution
Target Profile
Splunk
Splunk SPL & tstats data model queries
Format Mode
Default
Plain SPL queries
Conversion Output
Use of Pcalua For Execution
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: Use of Pcalua For Execution
id: 0955e4e1-c281-4fb9-9ee1-5ee7b4b754d2
related:
- id: fa47597e-90e9-41cd-ab72-c3b74cfb0d02
type: obsolete
status: test
description: Detects execition of commands and binaries from the context of The program compatibility assistant (Pcalua.exe). This can be used as a LOLBIN in order to bypass application whitelisting.
references:
- https://lolbas-project.github.io/lolbas/Binaries/Pcalua/
- https://pentestlab.blog/2020/07/06/indirect-command-execution/
author: Nasreddine Bencherchali (Nextron Systems), E.M. Anhaus (originally from Atomic Blue Detections, Endgame), oscd.community
date: 2022-06-14
modified: 2023-01-04
tags:
- attack.execution
- attack.t1059
logsource:
category: process_creation
product: windows
detection:
selection:
Image|endswith: '\pcalua.exe'
CommandLine|contains: ' -a' # No space after the flag because it accepts anything as long as there a "-a"
condition: selection
falsepositives:
- Legitimate use by a via a batch script or by an administrator.
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_lolbin_pcalua.yml