The E01 file forensics is a disc image that is legally called the expert witness format. This file was introduced by EnCase of Guidance Software and subsequently adapted by many other disk imaging applications such as FTK Imager. The objective was to provide one of the key levels of digital forensics, to map the failure data of machines / hard drives / external storage media, etc.
Forensic imagery is considered the most important step in forensics. According to digital forensic standards, the processing of evidence acquired in its original form is probably not legitimate from a legal point of view and is therefore likely to lead to the withdrawal of evidence. No matter how meticulously the investigative process is conducted, it can leave a record of the data being pursued. Therefore, cloning or imaging the evidence in question is a very important step in maintaining the integrity and accuracy of the evidence despite the processing to extract the evidence information.
E01 File Forensics Role
File E01 is a format in which the use of image fins for image fins is forensic. You receive an inventory, a volume and a logical image of the data. You will also receive instructions that control each block and page with the value MD5 for the full data stream. The file allows compression, generated the number of image files that are generated after obtaining and imaging.
Introducing Forensic and EnCase [E01] Image File
Digital forensics is a broad field with several industries dealing with data forensics, database forensics, email forensics and all types of electronic information storage. However, this alone means verifying the completeness of the type of data in which the information is stored electronically. As a result, it was found that starting EnCase 5 was not as effective as for forensic imaging tools. The email data could not be processed. This was a major challenge for forensic experts, as most studies depended on the presentation of evidence.
With the release of EnCase 6, expectations for email processing support have increased, but the hurdle has not yet been fully removed. The EnCase version was not yet able to process emails. This means that support has been provided, but only for a limited number (lower level) of emails. As a result, many other applications, including the FTK imager, are provided online and offer the same imaging functions and format (E01), but with extended functions. However, EnCase made great strides later, reaching version 7.10, which supports storage on tablets and smartphones.
E01 File Forensics Structural Analysis
Although the application acted as an E01 file provider, its structure has remained unchanged. This section of E01 File uses the results of the E01 structural analysis to help you understand the file and its revision platform. Everything on the hard drive (external, internal, or exchangeable) is saved to disk image files, regardless of the format of the data file, database, or system file. Depending on how the E01 file stores data, it is also unique in terms of storage, structure, and accessibility.
One of the main features of the E01 file is that only the file extension changes, not the original file name. In addition, all the songs can only store 640 MB of data, but the structure remains unchanged (E01, E02, etc.), and the file extension then changes.
Analysis of E01 File Forensics:
- All E01 image structures start with a header section that contains case information.
- A block of 64 sectors with a size of 32 KB serves as a separator between the individual data blocks. It also works with a cyclic redundancy check.
- Next, the file’s footer, which contains the MD5 values of the data displayed.
In this blog, we have discussed the complete information about the E01 image file, This is how the information is recorded and stored in the E01 file. Due to the unique structure of the E01 file, it depends on the original platform, i.e. EnCase or FTK Imager, which must provide the image for viewing and interpretation. For this reason, E01 file forensics can be executed in a similar way with its own structure and format.