The script ensures it runs again after reboot:
As EDR solutions become more sophisticated (using AI and behavioral analysis), simple kill scripts are losing effectiveness. However, the "Thimble" moniker may evolve. Thimble Kill Script File Zip
The script will likely attempt outbound connections on ports 80, 443, and sometimes 8080 or 4444. Monitor for connections to: The script ensures it runs again after reboot:
After the defenses are neutralized, the "Thimble" acts as a dropper. It extracts a secondary payload hidden in an alternate data stream (ADS) or a Base64 encoded string within the script itself. This secondary payload is usually: and Zip .
To understand the threat, we must first break down the four components of the keyword: Thimble, Kill, Script, File, and Zip.