Merge pull request #3 from jesgal/jesgal-patch-2

Create Update.yml
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---
Name: Update.exe
Description: Binary to update the existing installed Nuget/squirrel package. Part of Whatsapp installation.
Author: 'Jesus Galvez'
Created: '2020-11-01'
- Command: Update.exe --processStart payload.exe --process-start-args "whatever args"
Description: Copy your payload into "%localappdata%\Whatsapp\app-[version]\". Then run the command. Update.exe will execute the file you copied.
Usecase: Execute binary
Category: Execute
Privileges: User
MitreID: T1218
MitreLink: https://attack.mitre.org/techniques/T1218/
OperatingSystem: Windows 7 and up with Whatsapp installed
Full_Path:
- Path: '%localappdata%\Whatsapp\Update.exe'
Detection:
- IOC: "%localappdata%\Whatsapp\Update.exe" spawned an unknown process
---