New Scenario: the 2012 National Gallery DC Scenario Digital Evidence and Instruction Materials

July 27th, 2018 No comments

I am happy to announce that a new digital corpora has been posted to the scenarios collection of digitalcorpora.org.

SIX YEARS IN THE MAKING!

The scenario is the 2012 National Gallery DC scenario. Working in collaboration with Joseph Greenfield at USC, we have now completed the collection, annotation, and preparation of teacher guides. This has been a massive project and all of the data are now available for public consumption.

The 2012 National Gallery DC scenario spans approximately 10 days and encompasses two distinct yet intertwined story arcs. The scenario is centered around an employee at the National Gallery DC Art Gallery. Criminal plans for both theft and defacement are discussed amongst actors during the scenario, and evidence may remain across the digital devices they used. The scenario is terminated upon suspicious activity being reported to law enforcement at which point certain devices are seized and network traffic logs are requested. (A wiretap had been previously ordered, so there are some full content traces available.)

The scenario includes several believable characters:

Tracy —
Tracy is a recently divorced mother in the middle of a child custody battle. Unfortunately, Tracy’s daughter is in an expensive private school, which Tracy can no longer afford on her salary. Her ex-husband will only pay for the school if Tracy will give over custody of their daughter to him. Worse, Tracy’s daughter, Terry, age 15, has stated that she would rather live with her dad if it comes to staying in school. “After all, you ran Dad off in the first place.”

Pat —
Pat is Tracy’s brother. He is a police officer of the D.C. Enforcers Bureau. He holds the status of detective. He is very devoted to his sister and niece Terry, to this point he isn’t an outright criminal, but walks the line very closely. He busted King with some items that were against his parole, but hasn’t arrested him on the promise of a future “favor.”

Joe —
Joe is the father of Terry and is currently going through the divorce with Tracy. Joe is financially well-off, and still bitter about the relationship problems. He previously installed a key logger on the MacBook Air in an attempt to keep track of Terry’s online behavior. Now that Joe and Tracy are going through a divorce, he has motivation to utilize the key logger to spy on both Tracy and Terry. Joe used to have an account on the family MacBook Air however it was deleted. The home folder may have been preserved.

Alex —
Alex is a Krasnovian supporter who wishes to embarrass the United States. He is a foreigner and lives outside the country presumably in a region called Krasnovia. He knows Carry through extended family connections and contacts her as both having similar family ties and a fellow Krasnovian. He plans to deface foreign works that are on exhibit in the National Gallery DC. Defacing said artwork will embarrass the United States and possibly degrade the reputation between the United States and the foreign country providing the foreign exhibit to America. (In some documentation this is referred to as ‘Majavia’, a second pseudo-nation)

Carry —
Carry is a somewhat criminally involved individual that shares family ties with Alex. She is a Krasnovian supporter. Carry is both technologically savvy and an occasional social media user. She is contacted by Alex in the beginning of the scenario and asked to orchestrate the defacing of the artwork because she is both aligned with Krasnovia and because she has ‘Connections’. She has a slight familiarity as friends/acquaintances with Tracy.

Terry —
Terry is the daughter of Tracy and Joe. Terry attends an expensive private school. (Prufrock Preparatory School). She wants to stay in school to avoid having to start over and so that she can keep her current friends, despite the fact that her mother can no longer afford to pay the tuition.

The evidence in the scenario includes the following:

• Carry’s phone on 2012-07-15 [ZIP] [FTK Logical Dump]
• Carry’s tablet on 2012-07-16 [E01] [TAR]
• Email messages generated by the spyware installed on Tracy’s Macbook Air and that were periodically emailed to Joe [ZIP]
• Tracy’s phone on 2012-07-15 (encase) [L01] [ZIP]
• Tracy’s phone on 2012-07-15 (other extraction tools) [EO1] [tar]
• Tracy’s external hard drive [E01]
• Tracy’s home computer [E01] [E02]
• Exterior Network Packet Dumps
• exterior 2012-07-06 exterior-2012-07-06.pcap
• exterior 2012-07-09 exterior-2012-07-09.pcap
• exterior 2012-07-10 exterior-2012-07-10.pcap
• exterior 2012-07-12 exterior-2012-07-12.txt
• Interior Network Packet Dumps
• interior 2012-07-06 interior-2012-07-06.pcap
• interior 2012-07-09 interior-2012-07-09.pcap
• interior 2012-07-10 interior-2012-07-10.pcap
• interior 2012-07-12 interior-2012-07-12.txt

In addition to these final images, we also have day-by-day images of the two phones, the tablet, and the external hard drive. These day-by-day images are for *digital forensics research* and are not needed for scenario analysis.

Images of the phones and tablets were performed using a variety of techniques, including logging in to the devices and doing a ‘tar’ as well as using commercial digital forensics tools.

It’s true that this dataset is six years old! Please accept our apologies: it took a long time to clear all of this information. The advantage is that there should be good support for all of the file formats on these media, in both commercial and open source tools.

You can download the scenario and the teachers guides from:

National Gallery DC 2012 Attack

The teacher guides are encrypted with the same passphrase that is used to encrypt all of the digitalcorpora.org teacher’s guides. If you do not have it, you can request it using the website’s contact form.

Finally, as a reminder: these are all fictional people and institutions. There is no National Gallery DC, there is no country of Krasnovia, and there is no D.C. Enforcers Bureau. Any similarity to actual people or organizations is entirely coincidental.

Categories: Disk Images, Scenarios Tags:

New Scenario: 2018 Lone Wolf

July 15th, 2018 No comments

We are pleased to announce a new scenario in the digitalcorpora family!

Released today is the 2018 Lone Wolf Scenario, created by GMU student Thomas Moore. The scenario consists of more than 32GB (compressed) of data that was seized from a fictional individual who was planning a mass shooting.

The 2018 Lone Wolf Scenario is based on a (fictional) unstable individual who is planning a mass shooting. The individual is interrupted when a family member calls the police and his apartment is raided. The task for the investigators is to determine if anyone else was involved.

This scenario contains a disk image and memory dump from a laptop. It’s an image of a real, physical machine that was actually used, so it’s quite big. Also included in the scenario are the results of modern commercial digital forensics tools applied to the dataset, so that students who don’t have access to these tools can still see their results. There is a teacher’s guide that includes a report on all of the planted evidence.

The 2018 Lone Wolf Scenario was created by Thomas J. Moore, a student at George Mason University.

Please remember: this is a fictional scenario about fictional people!

Unlike the other scenarios on our website, this scenario also includes output of commercial forensic tools for student use. The idea is that there is nothing especially creative about running evidence through a tool, and a lot of students do not have access to state-of-the-art commercial tools, so we have run the tools for your students!

A teacher’s guide is available for this scenario.

You can find more information about the 2018 Lone Wolf scenario here: https://digitalcorpora.org/corpora/scenarios/2018-lone-wolf-scenario

Categories: Disk Images, Scenarios Tags:

website transition

April 29th, 2017 No comments

The website has been transitioned to Dreamhost. The downloads remain at George Mason University and can be reached at http://downloads.digitalcorpora.org/corpora/ for the corpora and http://downloads.digitalcorpora.org/downloads/ for files.

Categories: General Tags:

“non-deterministic” USB image contributed

May 27th, 2014 No comments

We are happy to announce the contribution of four disk images of a non-deterministic USB drive. Read More.

Categories: General Tags:

Announcing New File Type Sample Files

February 5th, 2014 No comments

UT San Antonio has kindly provided digitalcorpora with open source, publicly releasable samples of 32 file types. These are the samples that were used by Dr. Nicole Beebe to develop the Sceadan File Type Classifier.

Included file types are ASP, AVI, B64, B85, BZ2, CSS, DLL, ELF, EXE, EXT3, FAT, FLV, JAR, JB2, JS, M4A, MOV, MP3, MP4, NTFS, PST, RPM, RTF, Random, SWF, TXT, Tbird, URL, WAV, WMA, XLSX, ZIP. Each file type sample can be downloaded from the website:
* http://digitalcorpora.org/corp/nps/files/filetypes1/

Also included is a _README directory that includes a list of every file downloaded and a copyright statement for the files that are covered under copyright. You can access that directory at:
* http://digitalcorpora.org/corp/nps/files/filetypes1/_README/

This “FLETYPES1” corpus supplements the files in the GOVDOCS1 corpus.

Please let us know if you use these by including this citation in your paper:

“FILETYPES1 File type samples,” Beebe, Nicole, University of Texas, San Antonio, hosted at http://digitalcorpora.org/corp/nps/files/filetypes1/. 2014

Categories: Files, General Tags:

Announcement: hashdb toolset

October 24th, 2013 No comments

The text file govdocs1-first512-first4096-docid.txt containing MD5 hashes of the first 512 bytes and first 4096 bytes of every file in the GOVDOCS1 corpus has been removed.  This file was provided to assist with research of block hashes.  We have since created the hashdb toolset which provides support for creating and working with hash block databases.  Please refer to  https://github.com/simsong/hashdb/wiki for downloading the code, continuing progress on this topic, and links to relevant papers including:

Distinct Sector Hashes for Target File Detection

A related masters thesis on this topic was completed at Naval Postgraduate School in 2012 and can be downloaded for additional reading:  http://simson.net/ref/2012/kmf_thesis.pdf

 

 

 

Categories: General Tags:

Malware Scan of Govdocs1 now available

August 15th, 2013 No comments

A malware scan of thegovdocs1 corpus is now available at http://digitalcorpora.org/corp/nps/files/govdocs1/MetascanClientLog_201306281214.txt

 

Categories: General Tags:

Bulk Extractor News and Downloads

April 3rd, 2013 No comments

File bulk_extractor-1.3.1.zip contains the source code for bulk_extractor v1.3.1.  bulk_extractor is a C++ program that scans a disk image, a file, or a directory of files and extracts useful information without parsing the file system or file system structures.  bulk_extractor is typically downloaded on a Fedora system and compiled or cross-compiled to Linux, Mac, or Windows using autotools.  Please see https://github.com/simsong/bulk_extractor/wiki/Introducing-bulk_extractor.

BEViewer.jar is an executable bulk_extractor viewer user interface.
Bulk Extractor Viewer (BEViewer) provides a graphical user interface for browsing features that have been extracted via the bulk extractor feature extraction tool.  Please see https://github.com/simsong/bulk_extractor/wiki/BEViewer.

be_installer-1.3.exe is a Windows installer for installing bulk_extractor and BEViewer v1.3 on a Windows system.

bulk_extractor.pdf, “Digital media triage with bulk data analysis and bulk-extractor,” discusses how the bulk_extractor tool is effective in providing bulk data analysis.

2012-08-08 bulk_extractor Tutorial.pdf describes how to use the BEViewer tool.  Although some of the parameters for running bulk_extractor have changed, the majority of the tutorial remains current..

Source: The information above and links were received from Bruce Allen <bdallen@nps.edu>, Naval Postgraduate School

See other bulk_extractor downloads here: http://digitalcorpora.org/downloads/bulk_extractor/

Categories: General Tags:

Hash Codes

March 29th, 2013 No comments

The following post is now obsolete. The file frequent_hashcodes_and_paths_rdc.xml has been removed from the corpus as explained in a more recent post. Please see:

http://digitalcorpora.org/archives/391

Deprecated Post from Mar 29, 2013 @ 13:13

The file frequent_hashcodes_and_paths_rdc.xml contains SHA1 hashcode and path data derived from the Real Drive Corpus collected by the DEEP Project at the U.S. Naval Postgraduate School. The file provides two kinds of data useful to forensic investigators: (1) SHA1 hashcodes that occurred for undeleted files on at least five different drives in the corpus but did not occur in the National Software Reference Library (http://www.nsrl.nist.gov). These are likely to indicate files uninteresting and excludable in most forensic investigations. File sizes and names are also given. (2) Path names (file name plus all directories) for paths that occurred on at least twenty different drives in the corpus on undeleted files. These usefully supplement the hashcodes in indicating recurring files uninteresting for investigators. However, occurrences of these files could include viruses and other malware, or could be hiding illegal content although it is unlikely.

Read more …  http://digitalcorpora.org/corp/nus-deidentified/README-frequent-hashcodes-and-paths-rdc.txt
Download XML File (HAS BEEN REMOVED): http://digitalcorpora.org/corp/nus-deidentified/frequent-hashcodes-and-paths-rdc.xml   (102 MB)

Categories: General Tags:

35GB of JPEGs ready for download

March 7th, 2012 2 comments

We have created a tar and a ZIP file with 109,223 files from the govdocs1m corpus. You can download them from:

http://downloads.digitalcorpora.org/corpora/files/govdocs1/by_type/files.jpeg.tar   [37.6 GB]

Browse all by type: http://downloads.digitalcorpora.org/corpora/files/govdocs1/by_type/

Please note that the ZIP file is necessarily a ZIP-64 file and will not decompress with the ZIP implementation built-in to MacOS or Windows.

Categories: Files Tags:
"This material is based upon work supported by the National Science Foundation under Grant No. 0919593. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation."