Windows: Execution of ScriptRunner.exe with appvscript Argument

Flags ScriptRunner.exe executions that include the " -appvscript " parameter in the command line.

FreeReviewedSigma · Medium · v2

Product: windows
Category: process_creation
Author: Nasreddine Bencherchali (Nextron Systems) (SigmaHQ), DRL 1.1
Published: 2022-07-01
Updated: 2026-07-31

ATT&CK techniques

Defense Evasion

Recon
Resource Dev
Initial Access
Execution
Persistence
Priv Esc
Defense Evasion
- T1218System Binary Proxy Execution
Cred Access
Discovery
Lateral Movement
Collection
C2
Exfiltration
Impact

What it detects

This rule identifies process creation events where ScriptRunner.exe is launched and the command line contains the string ' -appvscript '. An attacker can use ScriptRunner.exe to proxy or wrap execution in a way that may help evade allowlist or application-control checks. The detection relies on Windows process creation telemetry, specifically the executable path/name and the command-line contents.

Reporting behind it

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Windows: Execution of ScriptRunner.exe with appvscript Argument

Pivot detection · T1218 · 9 related

Changelog

v2
Candidate ingested via manual entry.2026-07-31
v1
No changelog recorded for this version.2026-07-30

Detection content is published as a reviewed draft. Tune thresholds and exclusions against your own telemetry before enabling this rule for alerting.

windows-scriptrunner-exe-process-execution-with-app-v-script-parameters-64760eef

title: "Windows: Execution of ScriptRunner.exe with appvscript Argument"
id: 8587c1e3-d228-4a62-9d61-29a70f94ecb3
status: test
description: This rule identifies process creation events where ScriptRunner.exe is launched and the command line contains the string ' -appvscript '. An attacker can use ScriptRunner.exe to proxy or wrap execution in a way that may help evade allowlist or application-control checks. The detection relies on Windows process creation telemetry, specifically the executable path/name and the command-line contents.
references:
  - https://lolbas-project.github.io/lolbas/Binaries/Scriptrunner/
  - https://github.com/SigmaHQ/sigma/blob/master/rules/windows/process_creation/proc_creation_win_lolbin_scriptrunner.yml
author: Nasreddine Bencherchali (Nextron Systems), Huntrule Team
date: 2022-07-01
tags:
  - attack.execution
  - attack.stealth
  - attack.t1218
logsource:
  category: process_creation
  product: windows
detection:
  selection_img:
    - Image|endswith: \ScriptRunner.exe
    - OriginalFileName: ScriptRunner.exe
  selection_cli:
    CommandLine|contains: " -appvscript "
  condition: all of selection*
falsepositives:
  - Legitimate use when App-v is deployed
level: medium
license: DRL-1.1
related:
  - id: 64760eef-87f7-4ed3-93fd-655668ea9420
    type: derived

Convert

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