EDR: How to Enable AMSI Fileless_Script Capture

Products

• Carbon Black EDR (formerly Cb Response)

Issue/Introduction

Enable the collection of AMSI fileless_scriptload event data.

Environment

• EDR: Server: 7.6+

Resolution

Enable AMSI events in the Carbon Black EDR Console by toggling the collection of AMSI events per sensor group:

1. On the navigation bar, click Sensors.
2. Select the sensor group.
3. In the Event Collection Settings section, select the checkbox for Fileless script loads.
4. Click Save Group.

Additional Information

• AMSI event capture is disabled by default.
• The fileless_scriptload event leverages the Anti-Malware Scanning Interface (AMSI)support that is available in Windows 10 RS2+ and Windows 2019+.
• To forward the information to the SIEM, check the box in the Event Forwarder > Events > Sensor > ingress.event.filelessscriptload.
• File-based scripts are logged locally.
• At this time this feature collects powershell.exe and not powershell_ise.exe