Notes from Dr. Borkosky

Decide whether if additional information regarding the case is required (e.g., aliases, e-mail accounts, e-mail addresses, ISP used, names, network configuration and users, system logs, passwords, user names). So, while there was no, breach or damage created from this particular scenario, there was the use of the University, network to view, store or gain illegal images of rhinoceros.

The route of the images at the remote machine is: /~gnome. We have a bunch of TXT files and alligator pictures that may or may not hide relevant data. Prepare working directory/directories on separate media to which evidentiary files and data can be recovered and/or extracted. Extraction of the file system information to reveal characteristics such as directory structure, file attributes, file names, date and time stamps, file size, and file location.

account?

The user has downloaded an executable program called rhino.exe from a machine with IP 137.30.120.37 and hostname www.cs.uno.edu to a machine with IP 137.30.123.234. We use cookies to help provide and enhance our service and tailor content and ads. Vulnerabilities in digital devices & networks, 9. This seems to be some sort of personal diary. The last scenario consists of three network log traces plus a USB device image from the CFReDS Rhino Hunt scenario. The images have been downloaded to a machine with IP 137.30.123.234 from a machine with IP 137.30.120.37 and hostname www.cs.uno.edu.

In addition to the USB key drive image, three network, traces are also available that were provided by the network administrator and involve the, machine with the missing hard drive (Lyle ,2005).

As the label says on the tin, the program filters out and recovers just jpeg files. ScienceDirect ® is a registered trademark of Elsevier B.V. ScienceDirect ® is a registered trademark of Elsevier B.V. DFRWS 2017 USA — Proceedings of the Seventeenth Annual DFRWS USA, Availability of datasets for digital forensics – And what is missing. I first check the integrity of the files rhino.log, rhino2.log and rhino3.log. Date of receipt of the investigation request and the date when the report was written. Is there any evidence that connects the USB key and the network traces? After the login, the user gnome starts executing some commands on the shell: ls, du, df… and then, passwd. After reviewing the scenario, I proceeded to download the provided file the I find right after the STOR request has been accepted. However, different types of cases and media may require different methods of examination. Extraction of files pertinent to the examination. DNA analysis, fingerprinting etc. Correlating the files to the installed applications, to discover whether there are missing applications, applications without files. The Rhino Hunt forensic puzzle also did not create any damage within, the network that would require a digital forensic investigation to find and repair any damage to, the network where the malicious actor was present. There’s only one file in it, called rhino2.jpg. The suspect is the primary user of this machine, who has been

drive. Timing and Method The Rhino Hunt forensic puzzle is not an attack on a network that would require a digital forensic investigation looking for the vulnerable point in the network where the malicious actor would execute an attack.

Ok, time to recover some data, I will be using PhotoRec, and see what I can retrieve from this weirdo. USB key seized from one of the University’s labs. We acknowledge that the checksum of our file is the same: Now we know we are dealing with an untampered image file. But something tells me it’s gonna be FTP. Skilled users may used advanced techniques to conceal or destroy evidence (e.g., encryption, booby traps, steganography). © 2017 The Author(s). These should be checked to make sure they are 'forensically clean' so that investigators can be sure any evidence belongs to case being investigated, rather than leftover from other cases. Two principal methods used are: File time stamps have to be compared to the time values contained in the BIOS, not just that returned by the operating system which can be easily altered by the user. Methods to accomplish this may be based on file name and extension, file header, file content, and location on the drive. Identify four analytical methods and explain the role of each in the analytical process. JPSEEK is a program which allow you to hide a file in a jpeg visual image, and with a password, retrieve that file at a later time (DarknessGate, 2016).

Scalpel is another standard file carving tool. Computer forensics requires specially trained personnel in sound digital evidence recovery techniques. But I’m not familiar with the stego technique that may have been used. Extraction of password-protected, encrypted, and compressed data. It can be used, in Linux, Unix and Windows operating systems.

Include them in your notebook.

He wants to change his password. Any irregularities discovered in the course of the investgation and how they were treated. We also discuss what we think is missing.

Second, we want to stress the importance of sharing datasets to allow researchers to replicate results and improve the state of the art.

It looks like the IP address used by the suspect’s machine is 137.30.122.253. who has been pursuing his Ph.D. at the University since 1972 (Lyle, 2005).

The names of the pictures are rhino4.jpg and rhino5.gif. I repeat the process with the file rhino3.jpg and obtain the following image: Now I can recover the file contraband.zip, following the same steps. Explain how Scalpel works in your notebook. Who gave the accused a telnet/ftp account? Explain steganography and provide an example that shows it in action. Photorec comes as part of an overall package called testdisk. An example of this analysis would be using the last modified date and time to establish when the contents of a file were last changed. million lines searching for keywords, such as password.

To remove files altogether, users think that all it takes, is to delete the file and then empty the wastebasket. Examples include: In most cases it is essential to identify the individual(s) who created, modified, or accessed a file. computer?

The investigator must document completely and accurately their each step in thier investigation from the start to the end. The demand has resulted in the emergence of syndicates paying hundreds of men, generally poor Africans, to risk their lives and their freedom to kill rhinos and bring back the valuable horns. Let’s gather some more information of the file: Before I perform any file recovery or string search on the image, I open it with a hex editor. unique rhinoceros images a serious crime.

Essential information, such as the case number, the case investigator (the person who requested the investigation) and the name of the person writing the report. This trace also contains HTTP traffic. This first trace contains 6557 captured packets. These 'principles' are in line with the principles used to support the gathering, examination, documentation and reporting on digital evidence.

Evidence in the case includes a computer and

Fixing the subject at a computer and particular time and dates discovered from, File names and naming conventions discovered in.

If you haven't got an image file to practice on, download Practice Image and use that instead. exercises. I found this awesome website which has a great compilation of challenges, research results and CTFs.

The network administrator at the University of New Orleans recently alerted police when his instance of RHINOVORE flagged illegal rhino traffic. The USB key was imaged and, a copy of the dd image is on a CD-ROM. The suspect is the primary user of this machine, who has been pursuing his Ph.D. at the University since 1972. c0d0093eb1664cd7b73f3a5225ae3f30 *rhino.log, cd21eaf4acfb50f71ffff857d7968341 *rhino2.log, 7e29f9d67346df25faaf18efcd95fc30 *rhino3.log, 80348c58eec4c328ef1f7709adc56a54 *RHINOUSB.dd.

Unfortunately, the computer had no hard drive.

Special attention should be given to reviewing the scope of search warrant(s) and other other legal authorisations to establish the nature of hardware and software to be sezied, other potential evidence sought together with the circumstances surrounding the acquisition of the evidence to be examined.

file and the three network traces are as follows: rhino2.jpg, rhino8.gif, rhino9.gif, rhino10.bmp, The following is a list of tools that can be used to evaluate the evidence in this case and, why they were chosen. Single pieces of evidence from one source will probably be insufficient to reach a definite conclusion. The user tries to login with the username “golden” but fails. Unfortunately, Each different file type is recognised by it's header (hex code at the top of the file and optionally hex code at the foot of the file.). This image was contributed by Dr. Golden G. Richard III, and was originally used in the DFRWS 2005 RODEO CHALLENGE. digitalcorpora.org. Explain the main phases of the Forensic Process. More info about DEFT can be found here. Make a list of the general forensic principles that should govern forensic investigations. Once I’ve done this, I proceed to open the first file with Wireshark. What happened to the hard drive in the computer?

So special precuations are needed to preserve this type of evidence. This trace contains HTTP traffic.

It appears someone named Jeremy provided a “gnome” account. Time to put put your file carving skills to use. as training exercises, and provide different light hearted scenarios to try to The scenario and image was created by Dr. Golden G. Richard III. Course Hero is not sponsored or endorsed by any college or university.

In your report, provide answers to as many of the following The file rhino3.jpg is uploaded right after. The suspect had to use some script or program to hide the images and maybe I can find the download among the trace.

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