Possible Execution of JScript Compiler (via process_creation)

title: Possible Execution of JScript Compiler (via process_creation)
id: 0c87a5be-430e-5307-9ccd-8aacf58696a6
status: stable
description: This rule detects the execution of the "jsc.exe" (JScript Compiler). Attacker might misuse this to compile JScript files on the fly and bypassing application whitelisting.
references:
    - https://attack.mitre.org/techniques/T1127/
    - https://lolbas-project.github.io/lolbas/Binaries/Jsc/
    - https://www.phpied.com/make-your-javascript-a-windows-exe/
    - https://twitter.com/DissectMalware/status/998797808907046913
author: Huntrule Team
date: 2026-04-29
tags:
    - attack.execution
    - attack.stealth
    - attack.t1127
logsource:
    product: windows
    category: process_creation
detection:
    selection:
        - Image|endswith: '\jsc.exe'
        - OriginalFileName: 'jsc.exe'
    condition: selection
falsepositives:
    - Unknown
level: low