A DFIR tool written in Python.
Watch the video overview
The CISA Hunt and Incident Response Program (CHIRP) is a tool created to dynamically query Indicators of Compromise (IoCs) on hosts with a single package, outputting data in a JSON format for further analysis in a SIEM or other tool. CHIRP does not modify any system data.
We build and release CHIRP via
However, if you wish to run with Python3.6+, follow these instructions.
Python 3.6 or greater is required to run CHIRP with Python. If you need help installing Python in your environment, follow the instructions here
CHIRP must be run on a live machine, but it does not have to be network connected.
python3 -m pip install -e .
In our experience, yara-python comes with some other dependencies. You MAY have to install Visual Studio C++ 14.0 and the Windows 10 SDK, this can be retrieved with Visual Studio Community
# defaults .\chirp.exe -a AA21-008A # with args .\chirp.exe -a AA21-062A -p registry yara -t c:\\target_dir\\** -o chirp_result --non-interactive -vv
# defaults python3 chirp.py -a AA21-008A # with args python3 chirp.py -a AA21-062A -p registry yara -t c:\\target_dir\\** -o chirp_result --non-interactive -vv
[15:32:19] [YARA] Enumerating the entire filesystem due to ['CISA Solar Fire', 'CISA Teardrop', 'CrowdStrike Rempack', 'CrowdStrike Sunspot', 'FireEye common.py:103 Cosmic Gale', 'FireEye Sunburst']... this is going to take a while. [YARA] Entered yara plugin. common.py:103 [REGISTRY] Found 0 hit(s) for IFEO Persistence indicator. common.py:103 [REGISTRY] Found 0 hit(s) for Teardrop - Registry Activity indicator. common.py:103 [REGISTRY] Found 0 hit(s) for Sibot - Registry indicator. ... ... ... [+] Done! Your results can be found at Z:\README\output.
Non-interactive mode may be used by issuing the "--non-interactive" flag at runtime. Using this flag enables process completion without input. In addition, a non-zero status of 1 will be emitted at runtime completion if IoC's were discovered.
We welcome contributions! Please see here for details.
This project is in the worldwide public domain.
This project is in the public domain within the United States, and copyright and related rights in the work worldwide are waived through the CC0 1.0 Universal public domain dedication.
All contributions to this project will be released under the CC0 dedication. By submitting a pull request, you are agreeing to comply with this waiver of copyright interest.
This software package (“software” or “code”) was created by the United States Government and is not subject to copyright within the United States. All other rights are reserved. You may use, modify, or redistribute the code in any manner. However, you may not subsequently copyright the code as it is distributed. The United States Government makes no claim of copyright on the changes you effect, nor will it restrict your distribution of bona fide changes to the software. If you decide to update or redistribute the code, please include this notice with the code. Where relevant, we ask that you credit the Cybersecurity and Infrastructure Security Agency with the following statement: “Original code developed by the Cybersecurity and Infrastructure Security Agency (CISA), U.S. Department of Homeland Security.”
USE THIS SOFTWARE AT YOUR OWN RISK. THIS SOFTWARE COMES WITH NO WARRANTY, EITHER EXPRESS OR IMPLIED. THE UNITED STATES GOVERNMENT ASSUMES NO LIABILITY FOR THE USE OR MISUSE OF THIS SOFTWARE OR ITS DERIVATIVES.
THIS SOFTWARE IS OFFERED “AS-IS.” THE UNITED STATES GOVERNMENT WILL NOT INSTALL, REMOVE, OPERATE OR SUPPORT THIS SOFTWARE AT YOUR REQUEST. IF YOU ARE UNSURE OF HOW THIS SOFTWARE WILL INTERACT WITH YOUR SYSTEM, DO NOT USE IT.