Module for File Extraction
This is a Zeek package that provides convenient extraction of files.
As a secondary goal, this script performs additional commonly requested file extraction and logging tasks, such as naming extracted files after their calculated file checksum or naming the file with its common file extension.
Installing with zkg (preferred)
This package can be installed through the zeek package manager by utilizing the following commands:
zkg install zeek/hosom/file-extraction
# you must separately load the package for it to actually do anything
zkg load zeek/hosom/file-extraction
While not preferred, this package can also be installed manually. To do this, follow the tasks below:
git clone git://github.com/hosom/file-extraction file-extraction
echo "@load file-extraction" >> local.zeek
The package installs with the extract-common-exploit-types.zeek policy, however, additional functionality may be desired.
Configuration must always be done within the config.zeek file. Failure to isolate configuration to config.zeek will result in your configuration being overwritten.
For advanced configuration of file extraction, the best option available is to hook the FileExtraction::extract hook. For examples of this, look at the scripts in the plugins directory.
Attaches the extract files analyzer to every file that has a mime_type detected.
Attaches the extract files analyzer to every JNLP and Java Archive file detected.
Attaches the extract files analyzer to every PE file detected.
Attaches the extract files analyzer to every ms office file detected.
Attaches the extract files analyzer to every PDF file detected.
Loads the following plugins:
Uses file_state_remove to rename extracted files based on the md5 checksum whenever it is available.
Uses file_state_remove to rename extracted files based on the sha1 checksum whenever it is available.
Uses file_state_remove to rename extracted files based on the sha256 checksum whenever it is available.