Suspicious Electron Application Child Processes (via process_creation)

title: Suspicious Electron Application Child Processes (via process_creation)
id: dc7c2c31-5741-540b-a42b-49fb8759c8ec
status: stable
description: This rule detects anomalous child processes of electron apps (teams, discord, slack, etc.). This could be a potential sign of ".asar" file tampering (See reference section for more information) or binary execution proxy through specific CLI arguments (see related rule)
references:
    - https://taggart-tech.com/quasar-electron/
    - https://github.com/mttaggart/quasar
    - https://positive.security/blog/ms-officecmd-rce
    - https://lolbas-project.github.io/lolbas/Binaries/Msedge/
    - https://lolbas-project.github.io/lolbas/Binaries/Teams/
    - https://lolbas-project.github.io/lolbas/Binaries/msedgewebview2/
    - https://medium.com/@MalFuzzer/one-electron-to-rule-them-all-dc2e9b263daf
author: Huntrule Team
date: 2026-03-29
tags:
    - attack.execution
    - attack.t1059
logsource:
    category: process_creation
    product: windows
detection:
    selection_parent:
        ParentImage|endswith:
            - '\chrome.exe'
            - '\discord.exe'
            - '\GitHubDesktop.exe'
            - '\keybase.exe'
            - '\msedge.exe'
            - '\msedgewebview2.exe'
            - '\msteams.exe'
            - '\slack.exe'
            - '\teams.exe'
    selection_child_image:
        Image|endswith:
            - '\cmd.exe'
            - '\cscript.exe'
            - '\mshta.exe'
            - '\powershell.exe'
            - '\pwsh.exe'
            - '\regsvr32.exe'
            - '\whoami.exe'
            - '\wscript.exe'
    selection_child_paths:
        Image|contains:
            - ':\ProgramData\'
            - ':\Temp\'
            - '\AppData\Local\Temp\'
            - '\Users\Public\'
            - '\Windows\Temp\'
    filter_optional_discord:
        ParentImage|endswith: '\Discord.exe'
        Image|endswith: '\cmd.exe'
        CommandLine|contains: '\NVSMI\nvidia-smi.exe'
    condition: selection_parent and 1 of selection_child_* and not 1 of filter_optional_*
falsepositives:
    - Unknown
level: medium