blue-team-tools/rules/windows/process_creation/win_susp_squirrel_lolbin.yml

title: Squirrel Lolbin
id: fa4b21c9-0057-4493-b289-2556416ae4d7
status: experimental
description: Detects Possible Squirrel Packages Manager as Lolbin
references:
    - http://www.hexacorn.com/blog/2019/03/30/sqirrel-packages-manager-as-a-lolbin-a-k-a-many-electron-apps-are-lolbins-by-default/
    - http://www.hexacorn.com/blog/2018/08/16/squirrel-as-a-lolbin/
tags:
    - attack.execution
author: Karneades / Markus Neis
falsepositives:
    - 1Clipboard
    - Beaker Browser
    - Caret
    - Collectie
    - Discord
    - Figma
    - Flow
    - Ghost
    - GitHub Desktop
    - GitKraken
    - Hyper
    - Insomnia
    - JIBO
    - Kap
    - Kitematic
    - Now Desktop
    - Postman
    - PostmanCanary
    - Rambox
    - Simplenote
    - Skype
    - Slack
    - SourceTree
    - Stride
    - Svgsus
    - WebTorrent
    - WhatsApp
    - WordPress.com
    - atom
    - gitkraken
    - slack
    - teams
level: high
logsource:
    category: process_creation
    product: windows
detection:
    selection:
        Image:
            - '*\update.exe'                           # Check if folder Name matches executed binary  \\(?P<first>[^\\]*)\\Update.*Start.{2}(?P<second>\1)\.exe (example: https://regex101.com/r/SGSQGz/2)
        CommandLine:
            - '*--processStart*.exe*'
            - '*--processStartAndWait*.exe*'
            - '*–createShortcut*.exe*'
    condition: selection