Difference between pages "Residual Data on Used Equipment" and "BitLocker: how to image"

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Used hard drives are frequently a good source of images for testing forensic tools. That's because many individuals, companies and organizations neglect to properly sanitize their hard drives before they are sold on the secondary market.
 
  
You can find used hard drives on eBay, at swap meets, yard sales, and even on the street.
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= Imaging Options =
  
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There are multiple ways to image a computer with bitlocker security in place.
  
=Media Accounts=
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== Traditional Imaging ==
==Used Hard Drives==
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There have been several incidents in which individual have purchased a large number of hard drives and written about what they have found. This web page is an attempt to catalog all of those stories in chronological order.
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One can make a traditional image with the image containing encrypted information.
  
* '''2003-01''': [[Simson Garfinkel]] and Abhi Shelat at MIT publish a study in ''IEEE Security and Privacy Magazine''  which documents large amount of personal and business-sensitive information found on 150 drives purchased on the secondary market.
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Options to offline decrypt the information, provided the password or recovery password is available, exists some are:
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* [http://www.hsc.fr/ressources/outils/dislocker/ dislocker]
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* [[EnCase]] (as of version 6) with the (optional) encryption module
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* [[libbde]]
  
* '''2006-06''': A man buys a family's hard drive at a fleamarket in Chicago after the family's hard drive is upgraded by Best Buy. Apparently somebody at Best Buy violated company policy and instead of destroying the hard drive, they sold it. [http://www.youtube.com/watch?v=pcyemfJ5H3o&NR Target 5 Investigation]
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The recovery password is a long series of digits broken up into 8 segments.
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<pre>
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123456-123456-123456-123456-123456-123456-13456-123456
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</pre>
  
* '''2006-08-10''': The University of Glamorgan in Wales purchased 317 used hard drives from the UK, Australia, Germany, and the US. 25% of the 200 drives purchased from the UK market had been completely wiped. 40% of the purchased drives didn't work.  40% came from businesses, of which 23% contained enough information to identify the company. 5% had business sensitive information. 25% came from individuals, of which many had pornography, and 2 had to be referred to the police for suspected child pornography.
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Note that there is no white space in the recovery password including not at the end, e.g. EnCase does not accept the recovery password if there is trailing white space.
  
* '''2006-08-14''': [http://news.bbc.co.uk/2/hi/business/4790293.stm BBC News] reports on bank account information recovered from used PC hard drives and being sold in Nigeria for £20 each. The PCs had apparently come from recycling points run by UK town councils that are then "recycled" by being sent to Africa.
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The recovery password can be recovered from a BitLocker enabled computer provided it can be logged into or if stored in escrow.
  
* '''2006-08-15''': Simson Garfinkel presents results of a study of 1000 hard drives (750 working) at the 2006 Workshop on Digital Forensics. Results of the study show that information can be correlated across hard drives using Garfinkel's [[Cross Drive Analysis]] approach.
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The basic steps are:
  
* '''2007-02-06''': [http://www.fulcruminquiry.com Fulcrum Inquiry], a Los Angeles litigation support firm, purchased 70 used hard drives from 14 firms and discovered confidential information on 2/3rds of the drives.
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# Make a "traditional" full disk image.
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# Recover the password, this can be done by booting the original computer, or by creating a clone and booting the clone.  (booting from a clone has not been tested at this time.)
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## Once booted log into the computer
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## Use the BitLocker control panel applet to display the password.  This can also be done from the command-line.
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## record the password
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#:
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# For EnCase v6 or higher with the encryption module installed
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## Load the image into EnCase
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## You will be prompted for the password. Simply enter it and continue.
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## If you prefer to have an un-encrypted image to work with other tools or share with co-workers, you can "re-acquire" the image from within EnCase.  The new image will have unencrypted data.
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## After adding the encrypted image into your case, simply right click on the drive in the left panel and select acquire.  Select "do not add to case".  You will be presented a dialog window to enter new information about the image.  Make sure the destination you select for your new image does not exist.
  
* '''2007-08-30''': Bill Ries-Kinght, an IT consultant, purchases a 120GB Seagate hard drive on eBay for $69. Although the drive was advertised as being new, it apparently was previously used by the campaign of Mike Beebe, who won the Arkansas state governorship in November 2006. "Among the files were documents listing the private cell phone numbers of political allies, including US Senators Blanch Lincoln and Mark Pryor and US Representatives Marion Berry, Mike Ross and Vic Snyder. It also included talking points to guide the candidate as he called influential people whose support he sought," states an article published in [http://www.theregister.co.uk/2007/08/30/governors_data_sold_on_ebay/ The Register].
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== Live Imaging ==
  
* '''2008-01-28''': Gregory Evans, a security consultant in Marina Del Ray, Calif., bought a $500 computer at a swap meet from a former mortgage company. It contained credit reports on 300 people in a deleted file, according to an article published in [http://www.nydailynews.com/money/2008/01/28/2008-01-28_sensitive_info_lives_on_in_old_computers.html The New York Daily NEws]. The security consultant was also able to recover the usernames and passwords of the mortgage company's former employees.
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=== FTK Live Imaging of a physical drive ===
==Cell Phones==
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* [http://www.wired.com/techbiz/media/news/2003/08/60052 BlackBerry Reveals Bank's Secrets], Wired, August 8, 2005.
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* [http://www.taipeitimes.com/News/feat/archives/2008/09/28/2003424400 Who has your old phone's data], Pete Warren, The Guardian, London, Sept. 28, 2008, page 13.
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==Cameras==
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* [http://www.telegraph.co.uk/news/uknews/3107003/Camera-sold-on-eBay-contained-MI6-files.html Camera sold on eBay contained MI6 files], Jessica Salter, Telegraph, September 30, 2008.
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==Network Equipment==
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Using FTK Imager lite, it was determined a live image of the physical system disk resulted in an image with an encrypted bitlocker container on it.
* [http://www.pcpro.co.uk/news/227190/council-sells-security-hole-on-ebay.html Council sells security hole on Ebay], Matthew Sparkes, PC Pro, September 29, 2008 - Kirkless Council (UK) sells a Cisco [[VPN]] 3002 Concentrator on Ebay for 99 pence. The device is purchased by Andrew Mason, a security consultant, who discovers that the Cisco [[VPN]] device still has the full configuration for the Kirkless Council and the device hasn't been deactivated.
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=See Also=
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Note that the phrase "physical" here corresponds directly with FTK Imagers use of the term in their image acquire menu.
[[Residual Data]]
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=== FTK Live Imaging of a logical partition ===
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This has not been verified to work or fail at this time.
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Note that the phrase "logical" here corresponds directly with FTK Imagers use of the term in their image acquire menu.
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=== FTK Live Files and Folders collections ===
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This was not attempted, but it seems reasonable to assume this will collect unencrypted files.
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== See Also ==
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* [[BitLocker Disk Encryption]]
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* [[Defeating Whole Disk Encryption]]
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[[Category:Disk encryption]]
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[[Category:Windows]]

Revision as of 01:03, 15 July 2013

Imaging Options

There are multiple ways to image a computer with bitlocker security in place.

Traditional Imaging

One can make a traditional image with the image containing encrypted information.

Options to offline decrypt the information, provided the password or recovery password is available, exists some are:

The recovery password is a long series of digits broken up into 8 segments.

123456-123456-123456-123456-123456-123456-13456-123456

Note that there is no white space in the recovery password including not at the end, e.g. EnCase does not accept the recovery password if there is trailing white space.

The recovery password can be recovered from a BitLocker enabled computer provided it can be logged into or if stored in escrow.

The basic steps are:

  1. Make a "traditional" full disk image.
  2. Recover the password, this can be done by booting the original computer, or by creating a clone and booting the clone. (booting from a clone has not been tested at this time.)
    1. Once booted log into the computer
    2. Use the BitLocker control panel applet to display the password. This can also be done from the command-line.
    3. record the password
  3. For EnCase v6 or higher with the encryption module installed
    1. Load the image into EnCase
    2. You will be prompted for the password. Simply enter it and continue.
    3. If you prefer to have an un-encrypted image to work with other tools or share with co-workers, you can "re-acquire" the image from within EnCase. The new image will have unencrypted data.
    4. After adding the encrypted image into your case, simply right click on the drive in the left panel and select acquire. Select "do not add to case". You will be presented a dialog window to enter new information about the image. Make sure the destination you select for your new image does not exist.

Live Imaging

FTK Live Imaging of a physical drive

Using FTK Imager lite, it was determined a live image of the physical system disk resulted in an image with an encrypted bitlocker container on it.

Note that the phrase "physical" here corresponds directly with FTK Imagers use of the term in their image acquire menu.

FTK Live Imaging of a logical partition

This has not been verified to work or fail at this time.

Note that the phrase "logical" here corresponds directly with FTK Imagers use of the term in their image acquire menu.

FTK Live Files and Folders collections

This was not attempted, but it seems reasonable to assume this will collect unencrypted files.

See Also