> ## Documentation Index
> Fetch the complete documentation index at: https://docs.specterops.io/llms.txt
> Use this file to discover all available pages before exploring further.

# execute_coff

> Converted from Markdown to MDX

## Summary

Execute a Beacon Object File (BOF) with the specified arguments. This object file must first be cached in the agent using the `register_coff` command before being executed.
The `RunOF.dll` ia now automatically obtained from mythic if Apollo does not have it loaded in its file store already.

### Arguments

<img src="https://mintlify.s3.us-west-1.amazonaws.com/specteropsdocs/mythic-agents/apollo-docs/documentation-payload/apollo/images/execute_coff.png" alt="execoff" />

#### Object File

The name of the object file to execute. This must match the file name used with `register_file` or `register_coff`.

#### Function

Function of the object file to call, usually 'go'.

#### TimeOut

Maximum time (in seconds) that the object file should run.

#### Arguments (optional)

Arguments to pass to the function, using the following format:

-s:123 or int16:123
-i:123 or int32:123
-z:hello or string:hello
-Z:hello or wchar:hello
-b:abc== or base64:abc==

## Usage

```
execute_coff -Coff [coff_name] -Function [go] -Timeout [30] [-Arguments [arguments]]
```

Example

```
execute_coff -Coff dir.x64.o -Function go -Timeout 30 -Arguments wchar:C:\\
```

## MITRE ATT\&CK Mapping

* T1027

## Detailed Summary

The `execute_coff` command uses a Object File loader to execute object files within a new thread and returning output back to the agent using the implementation of Beacon functions.

### Resources

* [RunOF](https://github.com/nettitude/RunOF)