Difference between pages "Prefetch" and "Jump Lists"

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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 list of DLLs used by that executable, a count of how many times the executable was has been run, and a timestamp indicating the last time the program was run. Prefetch files are stored in the <tt>%SystemRoot%\Prefetch</tt> directory.
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'''Jump Lists''' are a feature found in Windows 7.
  
== Timestamps ==
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== Jump Lists ==
Both the [[NTFS]] timestamps for a Prefetch file and the timestamp embedded in each Prefetch file contain valueable information. The creation date of the file indicates the first time the application was executed. Both the modification date of the file and the embedded timestamp indicate the last time the application was executed. The
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Jump Lists are a new Windows 7 Taskbar feature that gives the user quick access to recently accessed application files and actions.  Jump Lists come in two flavors, automatic (autodest, or *.automaticDestinations-ms) and custom (custdest, or *.customDestinations-ms) files.  Autodest files are created by the operating system
  
== Other Notes ==
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Jump Lists are located in the user profile path, in the C:\Users\''user''\Recent folder. Autodest Jump Lists are located in the automaticDestinations subdirectory, and custdest files are located in the customDestinations subdirectory.
There should never be more than 128 prefetch files [http://blogs.msdn.com/ryanmy/archive/2005/05/25/421882.aspx].
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== See Also ==
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''Author's Note'': Jump Lists can prove to be considerably valuable during an examination, as the files appear (in limited testing) to persist after the application itself is removed from the system.  In one test, iTunes 10 was installed on a 64-bit Windows 7 system, and two audio files (i.e., [http://www.cyberspeak.libsyn.com: CyberSpeak podcasts]) were launched via iTunes.  The Jump Lists persisted after the iTunes was removed from the system.
* [[SuperFetch]]
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== External Links ==
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=== AutomaticDestinations ===
* [http://www.mitec.cz/wfa.html Windows File Analyzer] - Parses Prefetch files, thumbnail databases, shortcuts, index.dat files, and the recycle bin
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Path: C:\Users\user\AppData\Roaming\Microsoft\Windows\Recent\AutomaticDestinations<br>
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Files: *.automaticDestinations-ms
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'''Structure'''<br>
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The autodest files follow the [http://msdn.microsoft.com/en-us/library/dd942138%28v=prot.13%29.aspx: MS-CFB] compound file binary format specification. Each of the numbered streams within the file follows the [http://msdn.microsoft.com/en-us/library/dd871305%28v=prot.13%29.aspx: MS-SHLLINK] binary format specification.
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<p>
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'''Tools'''<br>
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Autodest files can be opened in tools such as the [http://mitec.cz/ssv.html: MiTec Structured Storage Viewer], and each of the streams individually/manually extracted.  Each of the extracted numbered streams can then be viewed via the [http://mitec.cz/wfa.html: Windows File Analyzer].<br><br>
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Another approach would be to use Mark Woan's [http://www.woanware.co.uk/?p=265: JumpLister] tool to view the information within the numbered streams of each autodest file.
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<br><br>
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The autodest files also contain a stream named "DestList" which acts as a most recently/frequently used (MRU/MFU) list.  This stream consists of a 32-byte header, followed by the various structures that correspond to each of the individual numbered streams. Each of these structures is 114 bytes in size, followed by a variable length Unicode string.  The first 114 bytes of the structure contains the following information at the corresponding offsets:
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<table border="1">
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<tr> <th>Offset</th> <th>Size</th> <th>Description</th> </tr>
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<tr> <td>0x48</td> <td>16 bytes</td> <td>NetBIOS name of the system; padded with zeros to 16 bytes</td> </tr>
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<tr> <td>0x58</td> <td>8 bytes</td> <td>Stream number; corresponds to the numbered stream within the jump list</td> </tr>
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<tr> <td>0x64</td> <td>8 bytes</td> <td>[http://support.microsoft.com/kb/188768: FILETIME] object</td> </tr>
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<tr> <td>0x70</td> <td>2 bytes</td> <td>Number of Unicode characters in the string that follows </td> </tr>
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</table>
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=== CustomDestinations ===
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Path: C:\Users\user\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations<br>
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Files: *.customDestinations-ms
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'''Structure'''<br>
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Custdest files reportedly follow a structure of sequential [http://msdn.microsoft.com/en-us/library/dd871305%28v=prot.13%29.aspx: MS-SHLLINK] binary format segments.
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== AppIDs ==
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[[List of Jump List IDs]]
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<br>
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{{Windows}}

Revision as of 08:15, 28 December 2011

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Jump Lists are a feature found in Windows 7.

Jump Lists

Jump Lists are a new Windows 7 Taskbar feature that gives the user quick access to recently accessed application files and actions. Jump Lists come in two flavors, automatic (autodest, or *.automaticDestinations-ms) and custom (custdest, or *.customDestinations-ms) files. Autodest files are created by the operating system

Jump Lists are located in the user profile path, in the C:\Users\user\Recent folder. Autodest Jump Lists are located in the automaticDestinations subdirectory, and custdest files are located in the customDestinations subdirectory.

Author's Note: Jump Lists can prove to be considerably valuable during an examination, as the files appear (in limited testing) to persist after the application itself is removed from the system. In one test, iTunes 10 was installed on a 64-bit Windows 7 system, and two audio files (i.e., CyberSpeak podcasts) were launched via iTunes. The Jump Lists persisted after the iTunes was removed from the system.

AutomaticDestinations

Path: C:\Users\user\AppData\Roaming\Microsoft\Windows\Recent\AutomaticDestinations
Files: *.automaticDestinations-ms

Structure
The autodest files follow the MS-CFB compound file binary format specification. Each of the numbered streams within the file follows the MS-SHLLINK binary format specification.

Tools
Autodest files can be opened in tools such as the MiTec Structured Storage Viewer, and each of the streams individually/manually extracted. Each of the extracted numbered streams can then be viewed via the Windows File Analyzer.

Another approach would be to use Mark Woan's JumpLister tool to view the information within the numbered streams of each autodest file.

The autodest files also contain a stream named "DestList" which acts as a most recently/frequently used (MRU/MFU) list. This stream consists of a 32-byte header, followed by the various structures that correspond to each of the individual numbered streams. Each of these structures is 114 bytes in size, followed by a variable length Unicode string. The first 114 bytes of the structure contains the following information at the corresponding offsets:

Offset Size Description
0x48 16 bytes NetBIOS name of the system; padded with zeros to 16 bytes
0x58 8 bytes Stream number; corresponds to the numbered stream within the jump list
0x64 8 bytes FILETIME object
0x70 2 bytes Number of Unicode characters in the string that follows

CustomDestinations

Path: C:\Users\user\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations
Files: *.customDestinations-ms

Structure
Custdest files reportedly follow a structure of sequential MS-SHLLINK binary format segments.

AppIDs

List of Jump List IDs


Windows