Difference between pages "Upcoming events" and "Prefetch"

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<b>PLEASE READ BEFORE YOU EDIT THE LISTS BELOW</b><br>
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{{Expand}}
When events begin the same day, events of a longer length should be listed first.  New postings of events with the same date(s) as other events should be added after events already in the list. Please use three-letter month abbreviations (i.e. Sep, NOT Sept. or September), use two digit dates (i.e. Jan 01 NOT Jan 1), and use date ranges rather than listing every date during an event(i.e. Jan 02-05, NOT Jan 02, 03, 04, 05).<br>
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Windows Prefetch files, introduced in [[Windows|Windows XP]], are designed to speed up the application startup process. Prefetch files contain the name of the executable, a Unicode list of DLLs used by that executable, a count of how many times the executable has been run, and a timestamp indicating the last time the program was run. Although Prefetch is present in Windows 2003, by default it is only enabled for boot prefetching. The feature is also found in [[Windows|Windows Vista]], where it has been augmented with [[SuperFetch]], [[ReadyBoot]], and [[ReadyBoost]]. For SSD drives Prefetch is disabled by default [http://blogs.msdn.com/b/e7/archive/2009/05/05/support-and-q-a-for-solid-state-drives-and.aspx].
<i>Some events may be <u>limited</u> to <b>Law Enforcement Only</b> or to a specific audience. Such restrictions should be noted when known.</i>
+
  
This is a BY DATE listing of upcoming events relevant to [[digital forensics]]. It is not an all inclusive list, but includes most well-known activities. Some events may duplicate events on the generic [[conferences]] page, but entries in this list have specific dates and locations for the upcoming event.
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Up to 128 Prefetch files are stored in the <tt>%SystemRoot%\Prefetch</tt> directory [http://blogs.msdn.com/ryanmy/archive/2005/05/25/421882.aspx]. Each file in that directory should contain the name of the application, a dash, and then an eight character hash of the location from which that application was run, and a <tt>.pf</tt> extension. The filenames should be all uppercase except for the extension. The format of hashes is not known. A sample filename for [[md5deep]] would look like: <tt>MD5DEEP.EXE-4F89AB0C.pf</tt>. If an application is run from two different locations on the drive (i.e. the user runs <tt>C:\md5deep.exe</tt> and then <tt>C:\Apps\Hashing\md5deep.exe</tt>), there will be two different prefetch files in the Prefetch folder.
  
This listing is divided into three sections (described as follows):<br>
+
== File format ==
<ol><li><b><u>[[Upcoming_events#Calls_For_Papers|Calls For Papers]]</u></b> - Calls for papers for either Journals or for Conferences, relevant to Digital Forensics (Name, Closing Date, URL)</li><br>
+
Each Prefetch file has a 4-byte signature (at offset 4) "SCCA" (or in hexadecimal notation 0x53 0x43 0x43 0x41). The signature is assumed to be preceded by a 4-byte format version indicator:
<li><b><u>[[Upcoming_events#Conferences|Conferences]]</u></b> - Conferences relevant for Digital Forensics (Name, Date, Location, URL)</li><br>
+
* 17 (0x00000011) for [[Windows XP]] and [[Windows 2003]]
<li><b><u>[[Training Courses and Providers]]</u></b> - Training </li><br></ol>
+
* 23 (0x00000017) for [[Windows Vista]], [[Windows 2008]], [[Windows 7]] and [[Windows 2012]] (note Windows 2012 has not been confirmed)
 +
* 26 (0x0000001a) for [[Windows 8|Windows 8.1]] (note this could be Windows 8 as well but has not been confirmed)
  
== Calls For Papers ==
+
For more information about the file format see: [[Windows Prefetch File Format]]
Please help us keep this up-to-date with deadlines for upcoming conferences that would be appropriate for forensic research.
+
  
{| border="0" cellpadding="2" cellspacing="2" align="top"
+
== Metadata ==
|- style="background:#bfbfbf; font-weight: bold"
+
The Prefetch file contains various metadata.
! width="30%|Title
+
* The executable's name, up to 29 characters.
! width="15%"|Due Date
+
* The run count, or number of times the application has been run.
! width="15%"|Notification Date
+
* Volume related information, like volume path and volume serial number.
! width="40%"|Website
+
* The size of the Prefetch file (sometimes referred to as end of file (EOF)).
|-
+
* The files and directories that were used doing the application's start-up.
|9th International Conference on Availability, Reliability and Security (ARES 2014)
+
|Mar 07, 2014
+
|May 19, 2014
+
|http://www.ares-conference.eu/conference/cfp/
+
|-
+
|24th Virus Bulletin International Conference
+
|Mar 07, 2014
+
|
+
|http://www.virusbtn.com/conference/vb2014/call/index
+
|-
+
|17th International Symposium on Research in Attacks, Intrusions and Defenses
+
|Apr 01, 2014
+
|Jun 01, 2014
+
|http://www.cse.chalmers.se/Raid2014/cfp.html
+
|-
+
|The New Security Paradigms Workshop (NSPW)
+
|Apr 11, 2014
+
|Jun 06, 2014
+
|http://www.nspw.org/2014/cfp
+
|-
+
|6th International Conference on Digital Forensics & Cyber Crime
+
|May 16, 2014
+
|Jul 30, 2014
+
|http://d-forensics.org/2014/show/cf-calls
+
|-
+
|67th Annual Scientific Meeting of the American Academy of Forensic Sciences
+
|Aug 01, 2014
+
|Nov 01, 2014
+
|http://www.aafs.org
+
|-
+
|Eleventh Annual IFIP WG 11.9 International Conference on Digital Forensics
+
|Oct 01, 2014
+
|Nov 15, 2014
+
|http://www.ifip119.org
+
|-
+
|}
+
  
See also [http://www.wikicfp.com/cfp/servlet/tool.search?q=forensics WikiCFP 'Forensics']
+
=== Timestamps ===
 +
The Prefetch file contains 2 types of timestamps
 +
* The time when the application was last ran (executed). Version 26 of the Prefetch format maintains 7 previous last run times.
 +
* The volume creation time (part of the volume information) of the volume the Prefetch file was created on.
  
== Conferences ==
+
The file system creation time of the Prefetch file indicates the first time the application was executed. Both the file system modification time of the Prefetch file and the embedded last run time indicate the last time the application was executed.
{| border="0" cellpadding="2" cellspacing="2" align="top"
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|- style="background:#bfbfbf; font-weight: bold"
+
! width="40%"|Title
+
! width="20%"|Date/Location
+
! width="40%"|Website
+
|-
+
|Fourth ACM Conference on Data and Application Security and Privacy 2014
+
|Mar 03-05<br>San Antonio, TX, USA
+
|http://www1.it.utsa.edu/codaspy/
+
|-
+
|9th International Conference on Cyber Warfare and Security (ICCWS-2014)
+
|Mar 24-25<br>West Lafayette, IN, USA
+
|http://academic-conferences.org/iciw/iciw2014/iciw14-home.htm
+
|-
+
|CyberPatterns 2014
+
|Apr 11<br>Oxford, United Kingdom
+
|http://tech.brookes.ac.uk/CyberPatterns2014/
+
|-
+
|US Cyber Crime Conference 2014
+
|Apr 29-May 02<br>Leesburg, VA
+
|http://www.usacybercrime.com/
+
|-
+
|DFRWS-Europe 2014
+
|May 07-09<br>Amsterdam, Netherlands
+
|http://dfrws.org/2014eu/index.shtml
+
|-
+
|8th International Conference on IT Security Incident Management & IT Forensics
+
|May 12-14<br>Muenster, Germany
+
|http://www1.gi-ev.de/fachbereiche/sicherheit/fg/sidar/imf/imf2014/
+
|-
+
|2014 IEEE Symposium on Security and Privacy
+
|May 16-23<br>Berkley, CA, USA
+
|http://www.ieee.org/conferences_events/conferences/conferencedetails/index.html?Conf_ID=16517
+
|-
+
|9th ADFSL Conference on Digital Forensics, Security and Law
+
|May 28-29<br>Richmond, VA
+
|http://www.digitalforensics-conference.org/
+
|-
+
|Techno-Security and Forensics Conference
+
|Jun 01-04<br>Myrtle Beach, SC, USA
+
|http://www.techsec.com/html/Security%20Conference%202014.html
+
|-
+
|Mobile Forensics World
+
|Jun 01-04<br>Myrtle Beach, SC, USA
+
|http://www.techsec.com/html/MFC-2014-Spring.html
+
|-
+
|12th International Conference on Applied Cryptography and Network Security
+
|Jun 10-13<br>Lausanne, Switzerland
+
|http://acns2014.epfl.ch/
+
|-
+
|2nd ACM Workshop on Information Hiding and Multimedia Security
+
|Jun 11-13<br>Salzburg, Austria
+
|http://www.ihmmsec.org/
+
|-
+
|54th Conference on Audio Forensics
+
|Jun 12-14<br>London, England
+
|http://www.aes.org/conferences/54/
+
|-
+
|Cyber and NetCentric Workshop (Requires US Security Clearance)
+
|Jun 17-19<br>Lincoln Laboratories, Lexington, MA
+
|https://conferences.ll.mit.edu/cnw/
+
|-
+
|2014 USENIX Annual Technical Conference
+
|Jun 19-20<br>Philadelphia, PA, USA
+
|https://www.usenix.org/conference/atc14
+
|-
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|26th Annual FIRST Conference: Back to the ‘root’ of Incident Response
+
|Jun 22-27<br>Boston, MA
+
|http://www.first.org/conference/2014
+
|-
+
|44th Annual IEEE/IFIP International Conference on Dependable Systems and Networks
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|Jun 23-26<br>Atlanta, GA, USA
+
|http://www.dsn.org/
+
|-
+
|Symposium On Usable Privacy and Security (SOUPS) 2014
+
|Jul 09-11<br>Menlo Park, CA, USA
+
|http://cups.cs.cmu.edu/soups/2014/
+
|-
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|11th Conference on Detection of Intrusions and Malware & Vulnerability Assessment
+
|July 10-11<br>Egham, UK
+
|http://dimva2014.isg.rhul.ac.uk/
+
|-
+
|Black Hat USA 2014
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|Aug 02-07<br>Las Vegas, NV, USA
+
|https://www.blackhat.com
+
|-
+
|DFRWS 2014
+
|Aug 03-06<br>Denver, CO, USA
+
|http://dfrws.org/2014/index.shtml
+
|-
+
|RCFG GMU 2014
+
|Aug 04-08<br>Fairfax, VA, USA
+
|http://www.rcfg.org/gmu/
+
|-
+
|23rd USENIX Security Symposium
+
|Aug 20-22<br>San Diego, CA, USA
+
|https://www.usenix.org/conferences
+
|-
+
|2014 HTCIA International Conference & Training Expo
+
|Aug 25-27<br>Austin, TX
+
|http://www.htcia.org/2013/11/2014-htcia-international-conference-training-expo/
+
|-
+
|International Conference on Availability, Reliability and Security (ARES)
+
|Sep 08-12<br>Fribourg, Switzerland
+
|http://www.ares-conference.eu/conference/
+
|-
+
|The New Security Paradigms Workshop (NSPW)
+
|Sep 15-18<br>Victoria, British Columbia, Canada
+
|http://www.nspw.org/2014
+
|-
+
|6th International Conference on Digital Forensics & Cyber Crime co-hosted with the Systematic Approaches to Digital Forensic Engineering (SADFE)
+
|Sep 18-20<br>New Haven, CT
+
|http://d-forensics.org/2014/show/home
+
|-
+
|17th International Symposium on Research in Attacks, Intrusions and Defenses (RAID)
+
|Sep 24-26<br>Gothenburg, Sweden
+
|http://www.raid2014.eu/
+
|-
+
|24th Virus Bulletin International Conference
+
|Sep 24-26<br>Seattle, WA
+
|http://www.virusbtn.com/conference/vb2014/index
+
|-
+
|25th Annual Conference & Digital Multimedia Evidence Training Symposium
+
|Oct 06-10<br>Coeur d’Alene, ID, USA
+
|http://www.leva.org/annual-training-conference/
+
|-
+
|Eleventh Annual IFIP WG 11.9 International Conference on Digital Forensics
+
|Jan 26-28<br>Orlando, FL
+
|http://www.ifip119.org
+
|-
+
|67th Annual Scientific Meeting of the American Academy of Forensic Sciences
+
|Feb 16-25<br>Orlando, FL
+
|http://www.aafs.org
+
|-
+
|}
+
  
==See Also==
+
== Prefetch hash ==
* [[Training Courses and Providers]]
+
There are multiple known hashing functions to be used for prefetch file filename hashing, namely:
==References==
+
* SCCA XP hash function; used on Windows XP and Windows 2003
* [http://faculty.cs.tamu.edu/guofei/sec_conf_stat.htm Computer Security Conference Ranking and Statistic]
+
* SCCA Vista hash function; used on Windows Vista
* [http://www.kdnuggets.com/meetings/ Meetings and Conferences in Data Mining and Discovery]
+
* SCCA 2008 hash function; used on Windows 2008, Windows 7, (possibly: Windows 2012) and Windows 8 (including 8.1)
* http://www.conferencealerts.com/data.htm Data Mining Conferences World-Wide]
+
 
 +
=== SCCA XP hash function ===
 +
A Python implementation of the SCCA XP hash function:
 +
 
 +
<pre>
 +
def ssca_xp_hash_function(filename):
 +
    hash_value = 0
 +
    for character in filename:
 +
        hash_value = ((hash_value * 37) + ord(character)) % 0x100000000
 +
        hash_value = (hash_value * 314159269) % 0x100000000
 +
        if hash_value > 0x80000000:
 +
            hash_value = 0x100000000 - hash_value
 +
 
 +
    return (abs(hash_value) % 1000000007) % 0x100000000
 +
</pre>
 +
 
 +
=== SCCA Vista hash function ===
 +
A Python implementation of the SCCA Vista hash function:
 +
 
 +
<pre>
 +
def ssca_vista_hash_function(filename):
 +
    hash_value = 314159
 +
    for character in filename:
 +
        hash_value = ((hash_value * 37) + ord(character)) % 0x100000000
 +
    return hash_value
 +
</pre>
 +
 
 +
=== SCCA 2008 hash function ===
 +
A Python implementation of the SCCA 2008 hash function:
 +
 
 +
<pre>
 +
def ssca_2008_hash_function(filename):
 +
    hash_value = 314159
 +
    filename_index = 0
 +
    filename_length = len(filename)
 +
    while filename_index + 8 < filename_length:
 +
        character_value = ord(filename[filename_index + 1]) * 37
 +
        character_value += ord(filename[filename_index + 2])
 +
        character_value *= 37
 +
        character_value += ord(filename[filename_index + 3])
 +
        character_value *= 37
 +
        character_value += ord(filename[filename_index + 4])
 +
        character_value *= 37
 +
        character_value += ord(filename[filename_index + 5])
 +
        character_value *= 37
 +
        character_value += ord(filename[filename_index + 6])
 +
        character_value *= 37
 +
        character_value += ord(filename[filename_index]) * 442596621
 +
        character_value += ord(filename[filename_index + 7])
 +
        hash_value = ((character_value - (hash_value * 803794207)) % 0x100000000)
 +
        filename_index += 8
 +
 
 +
    while filename_index < filename_length:
 +
      hash_value = (((37 * hash_value) + ord(filename[filename_index])) % 0x100000000)
 +
      filename_index += 1
 +
 
 +
    return hash_value
 +
</pre>
 +
 
 +
== Registry Keys ==
 +
<pre>
 +
Key: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager\Memory Management\PrefetchParameters
 +
</pre>
 +
 
 +
The EnablePrefetcher Registry value can be used to disable prefetch.
 +
 
 +
== See Also ==
 +
* [[Windows Prefetch File Format]]
 +
* [[SuperFetch]]
 +
* [[Prefetch XML]]
 +
* [[Windows]]
 +
 
 +
== External Links ==
 +
* [http://msdn.microsoft.com/msdnmag/issues/01/12/XPKernel/default.aspx More detail from Microsoft]
 +
* [http://en.wikipedia.org/wiki/Prefetcher Wikipedia Prefetcher]
 +
* [http://msdn.microsoft.com/en-us/library/ms940847(v=winembedded.5).aspx MSDN: Disabling Prefetch]
 +
* [http://www.microsoft.com/whdc/driver/kernel/XP_kernel.mspx Kernel Enhancements for Windows XP], by [[Microsoft]], January 13, 2003 (Microsoft's description of Prefetch when Windows XP was introduced)
 +
* [http://blogs.msdn.com/b/ryanmy/archive/2005/05/25/421882.aspx Misinformation and the The Prefetch Flag], MSDN Blogs, May 25, 2005
 +
* [http://windowsir.blogspot.ch/2005/07/prefetch-file-metadata.html Prefetch file metadata], by [[Harlan Carvey]], July 13, 2005
 +
* [http://windowsir.blogspot.ch/2006/04/prefetch-files-revisited.html Prefetch files, revisited], by [[Harlan Carvey]], April 13, 2006
 +
* [http://blogs.msdn.com/b/e7/archive/2009/05/05/support-and-q-a-for-solid-state-drives-and.aspx Support and Q&A for Solid-State Drives], by Steven Sinofsky, May 5, 2009
 +
* [http://computer-forensics.sans.org/blog/2009/08/05/de-mystifying-defrag-identifying-when-defrag-has-been-used-for-anti-forensics-part-1-windows-xp/ De-mystifying Defrag: Identifying When Defrag Has Been Used for Anti-Forensics (Part 1 - Windows XP)], by [[Chad Tilbury]], August 5, 2009
 +
* [http://www.swiftforensics.com/2010/04/the-windows-prefetchfile.html Windows Prefetch File (old blog entry from 42 LLC)], by [[Yogesh Khatri]], April 14, 2010
 +
* [http://www.dfinews.com/articles/2010/12/decoding-prefetch-files-forensic-purposes-part-1 Decoding Prefetch Files for Forensic Purposes: Part 1], by [[Mark Wade]], December 8, 2010
 +
* [http://crucialsecurityblog.harris.com/2011/04/11/prefetch-files-at-face-value/ Prefetch Files at Face Value], by [[Mark Wade]], April 11, 2011
 +
* [http://kitrap08.blogspot.hk/2011/07/windows-logical-prefetcher.html Windows Logical Prefetcher], TTS blog, July 30, 2011 (article is in Russian)
 +
* [http://labit.in/pliki-prefetch-w-windows/ Prefetch i niedokładny licznik] by Paweł Hałdrzyński, August 20, 2011 (article in Polish; uncertain about the year of publication)
 +
* [http://windowsir.blogspot.ch/2012/03/prefetch-analysis-revisited.html Prefetch Analysis, Revisited], by [[Harlan Carvey]], March 8, 2012
 +
* [http://windowsir.blogspot.ch/2012/03/prefetch-analysis-revisitedagain.html Prefetch Analysis, Revisited...Again...], by [[Harlan Carvey]], March 15, 2012
 +
* [http://www.hexacorn.com/blog/2012/06/13/prefetch-hash-calculator-a-hash-lookup-table-xpvistaw7w2k3w2k8/ Prefetch Hash Calculator + a hash lookup table xp/vista/w7/w2k3/w2k8], Hexacorn blog, June 13, 2012
 +
* [http://www.hexacorn.com/blog/2012/10/29/prefetch-file-names-and-unc-paths/ Prefetch file names and UNC paths], Hexacorn blog, October 29, 2012
 +
* [http://journeyintoir.blogspot.ch/2012/12/ntosboot-prefetch-file.html NTOSBOOT Prefetch File], by [[Corey Harrell]], December 5, 2012
 +
* [http://www.invoke-ir.com/2013/09/whats-new-in-prefetch-for-windows-8.html What's New in the Prefetch for Windows 8??], by Jared Atkinson, September 21, 2013
 +
* [http://www.swiftforensics.com/2013/10/windows-prefetch-pf-files.html?m=1 Windows Prefetch (.PF) files], by [[Yogesh Khatri]], October 21, 2013
 +
* [http://i.imgur.com/riuljsK.jpg Prefetch 101 -  a Windows 8 Prefetch file walkthrough], by Jared Atkinson, 2014
 +
 
 +
== Tools ==
 +
 
 +
=== Commercial ===
 +
 
 +
=== Free - Non Open Source ===
 +
* [http://www.woanware.co.uk/forensics/prefetchforensics.html PrefetchForensics], PrefetchForensics is an application to extract information from Windows Prefetch files
 +
* [http://redwolfcomputerforensics.com/index.php?option=com_content&task=view&id=42&Itemid=55 Prefetch-Parser], Parse the prefetch files and display information
 +
* [http://www.mitec.cz/wfa.html Windows File Analyzer] - Parses Prefetch files, thumbnail databases, shortcuts, index.dat files, and the recycle bin
 +
* [http://www.tzworks.net/prototype_page.php?proto_id=1 Windows Prefetch Parser (pf)], Free tool that can be run on Windows, Linux or Mac OS-X
 +
 
 +
=== Open Source ===
 +
* [https://code.google.com/p/prefetch-tool/ prefetch-tool], Script to extract information from windows prefetch folder

Revision as of 09:49, 13 March 2014

Information icon.png

Please help to improve this article by expanding it.
Further information might be found on the discussion page.

Windows Prefetch files, introduced in Windows XP, are designed to speed up the application startup process. Prefetch files contain the name of the executable, a Unicode list of DLLs used by that executable, a count of how many times the executable has been run, and a timestamp indicating the last time the program was run. Although Prefetch is present in Windows 2003, by default it is only enabled for boot prefetching. The feature is also found in Windows Vista, where it has been augmented with SuperFetch, ReadyBoot, and ReadyBoost. For SSD drives Prefetch is disabled by default [1].

Up to 128 Prefetch files are stored in the %SystemRoot%\Prefetch directory [2]. Each file in that directory should contain the name of the application, a dash, and then an eight character hash of the location from which that application was run, and a .pf extension. The filenames should be all uppercase except for the extension. The format of hashes is not known. A sample filename for md5deep would look like: MD5DEEP.EXE-4F89AB0C.pf. If an application is run from two different locations on the drive (i.e. the user runs C:\md5deep.exe and then C:\Apps\Hashing\md5deep.exe), there will be two different prefetch files in the Prefetch folder.

File format

Each Prefetch file has a 4-byte signature (at offset 4) "SCCA" (or in hexadecimal notation 0x53 0x43 0x43 0x41). The signature is assumed to be preceded by a 4-byte format version indicator:

For more information about the file format see: Windows Prefetch File Format

Metadata

The Prefetch file contains various metadata.

  • The executable's name, up to 29 characters.
  • The run count, or number of times the application has been run.
  • Volume related information, like volume path and volume serial number.
  • The size of the Prefetch file (sometimes referred to as end of file (EOF)).
  • The files and directories that were used doing the application's start-up.

Timestamps

The Prefetch file contains 2 types of timestamps

  • The time when the application was last ran (executed). Version 26 of the Prefetch format maintains 7 previous last run times.
  • The volume creation time (part of the volume information) of the volume the Prefetch file was created on.

The file system creation time of the Prefetch file indicates the first time the application was executed. Both the file system modification time of the Prefetch file and the embedded last run time indicate the last time the application was executed.

Prefetch hash

There are multiple known hashing functions to be used for prefetch file filename hashing, namely:

  • SCCA XP hash function; used on Windows XP and Windows 2003
  • SCCA Vista hash function; used on Windows Vista
  • SCCA 2008 hash function; used on Windows 2008, Windows 7, (possibly: Windows 2012) and Windows 8 (including 8.1)

SCCA XP hash function

A Python implementation of the SCCA XP hash function:

def ssca_xp_hash_function(filename):
    hash_value = 0
    for character in filename:
        hash_value = ((hash_value * 37) + ord(character)) % 0x100000000
        hash_value = (hash_value * 314159269) % 0x100000000
        if hash_value > 0x80000000:
            hash_value = 0x100000000 - hash_value

    return (abs(hash_value) % 1000000007) % 0x100000000

SCCA Vista hash function

A Python implementation of the SCCA Vista hash function:

def ssca_vista_hash_function(filename):
    hash_value = 314159
    for character in filename:
        hash_value = ((hash_value * 37) + ord(character)) % 0x100000000
    return hash_value

SCCA 2008 hash function

A Python implementation of the SCCA 2008 hash function:

def ssca_2008_hash_function(filename):
    hash_value = 314159
    filename_index = 0
    filename_length = len(filename)
    while filename_index + 8 < filename_length:
        character_value = ord(filename[filename_index + 1]) * 37
        character_value += ord(filename[filename_index + 2])
        character_value *= 37
        character_value += ord(filename[filename_index + 3])
        character_value *= 37
        character_value += ord(filename[filename_index + 4])
        character_value *= 37
        character_value += ord(filename[filename_index + 5])
        character_value *= 37
        character_value += ord(filename[filename_index + 6])
        character_value *= 37
        character_value += ord(filename[filename_index]) * 442596621
        character_value += ord(filename[filename_index + 7])
        hash_value = ((character_value - (hash_value * 803794207)) % 0x100000000)
        filename_index += 8

    while filename_index < filename_length: 
       hash_value = (((37 * hash_value) + ord(filename[filename_index])) % 0x100000000)
       filename_index += 1

    return hash_value 

Registry Keys

Key: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager\Memory Management\PrefetchParameters

The EnablePrefetcher Registry value can be used to disable prefetch.

See Also

External Links

Tools

Commercial

Free - Non Open Source

Open Source

  • prefetch-tool, Script to extract information from windows prefetch folder