Thread: [sleuthkit-users] Wrong results when reading System Volume Shadow Files
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From: Luís F. N. <lfc...@gm...> - 2014-10-06 01:47:11
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Hi, We are getting incorrect results with sleuthkit 4.1.3 and 4.2.0 when reading the contents of a lot of windows volume shadow copy files from many disk images. The contents of these files are being reported as zeroed files by sleuthkit. But they are not zeroed files, as reported by other forensic tools. So we are not being able to carve these files using sleuthkit. If we can provide more info to help addressing the issue, please let us know. Any help will be appreciated, Luis Nassif |
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From: Alex N. <ajn...@cs...> - 2014-10-06 15:54:04
Attachments:
smime.p7s
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Hi Luis, Which of the TSK tools are you using to extract those files? Could you provide an example command? (I'd forgotten TSK could do anything with volume shadow copies.) --Alex On Oct 5, 2014, at 21:47 , Luís Filipe Nassif <lfc...@gm...> wrote: > Hi, > > We are getting incorrect results with sleuthkit 4.1.3 and 4.2.0 when reading the contents of a lot of windows volume shadow copy files from many disk images. The contents of these files are being reported as zeroed files by sleuthkit. But they are not zeroed files, as reported by other forensic tools. So we are not being able to carve these files using sleuthkit. If we can provide more info to help addressing the issue, please let us know. > > Any help will be appreciated, > Luis Nassif > ------------------------------------------------------------------------------ > Slashdot TV. Videos for Nerds. Stuff that Matters. > http://pubads.g.doubleclick.net/gampad/clk?id=160591471&iu=/4140/ostg.clktrk_______________________________________________ > sleuthkit-users mailing list > https://lists.sourceforge.net/lists/listinfo/sleuthkit-users > http://www.sleuthkit.org |
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From: Luís F. N. <lfc...@gm...> - 2014-10-06 16:31:56
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Hi Alex, I am using the Autopsy 3.1 interface to view the files and the sleuthkit java bindings api within a custom java application to extract its contents through the ReadContentInputStream class. Thanks Luis 2014-10-06 12:38 GMT-03:00 Alex Nelson <ajn...@cs...>: > Hi Luis, > > Which of the TSK tools are you using to extract those files? Could you > provide an example command? (I'd forgotten TSK could do anything with > volume shadow copies.) > > --Alex > > > On Oct 5, 2014, at 21:47 , Luís Filipe Nassif <lfc...@gm...> wrote: > > > Hi, > > > > We are getting incorrect results with sleuthkit 4.1.3 and 4.2.0 when > reading the contents of a lot of windows volume shadow copy files from many > disk images. The contents of these files are being reported as zeroed files > by sleuthkit. But they are not zeroed files, as reported by other forensic > tools. So we are not being able to carve these files using sleuthkit. If we > can provide more info to help addressing the issue, please let us know. > > > > Any help will be appreciated, > > Luis Nassif > > > ------------------------------------------------------------------------------ > > Slashdot TV. Videos for Nerds. Stuff that Matters. > > > http://pubads.g.doubleclick.net/gampad/clk?id=160591471&iu=/4140/ostg.clktrk_______________________________________________ > > sleuthkit-users mailing list > > https://lists.sourceforge.net/lists/listinfo/sleuthkit-users > > http://www.sleuthkit.org > > |
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From: Luís F. N. <lfc...@gm...> - 2014-10-08 21:35:06
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Another useful information: the contents of those files are rendered with a blue color by the hex viewer of Encase, so it means they are special in some way. Does anyone know what it means? 2014-10-06 13:31 GMT-03:00 Luís Filipe Nassif <lfc...@gm...>: > Hi Alex, > > I am using the Autopsy 3.1 interface to view the files and the sleuthkit > java bindings api within a custom java application to extract its contents > through the ReadContentInputStream class. > > Thanks > Luis > > 2014-10-06 12:38 GMT-03:00 Alex Nelson <ajn...@cs...>: > >> Hi Luis, >> >> >> Which of the TSK tools are you using to extract those files? Could you >> provide an example command? (I'd forgotten TSK could do anything with >> volume shadow copies.) >> >> --Alex >> >> >> On Oct 5, 2014, at 21:47 , Luís Filipe Nassif <lfc...@gm...> >> wrote: >> >> > Hi, >> > >> > We are getting incorrect results with sleuthkit 4.1.3 and 4.2.0 when >> reading the contents of a lot of windows volume shadow copy files from many >> disk images. The contents of these files are being reported as zeroed files >> by sleuthkit. But they are not zeroed files, as reported by other forensic >> tools. So we are not being able to carve these files using sleuthkit. If we >> can provide more info to help addressing the issue, please let us know. >> > >> > Any help will be appreciated, >> > Luis Nassif >> > >> ------------------------------------------------------------------------------ >> > Slashdot TV. Videos for Nerds. Stuff that Matters. >> > >> http://pubads.g.doubleclick.net/gampad/clk?id=160591471&iu=/4140/ostg.clktrk_______________________________________________ >> > sleuthkit-users mailing list >> > https://lists.sourceforge.net/lists/listinfo/sleuthkit-users >> > http://www.sleuthkit.org >> >> > |
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From: Luís F. N. <lfc...@gm...> - 2014-10-08 21:40:25
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The blue color are also used to render the contents of $BadClus·$Bad files... 2014-10-08 18:34 GMT-03:00 Luís Filipe Nassif <lfc...@gm...>: > Another useful information: the contents of those files are rendered with > a blue color by the hex viewer of Encase, so it means they are special in > some way. Does anyone know what it means? > > 2014-10-06 13:31 GMT-03:00 Luís Filipe Nassif <lfc...@gm...>: > > Hi Alex, >> >> I am using the Autopsy 3.1 interface to view the files and the sleuthkit >> java bindings api within a custom java application to extract its contents >> through the ReadContentInputStream class. >> >> Thanks >> Luis >> >> 2014-10-06 12:38 GMT-03:00 Alex Nelson <ajn...@cs...>: >> >>> Hi Luis, >>> >>> >>> Which of the TSK tools are you using to extract those files? Could you >>> provide an example command? (I'd forgotten TSK could do anything with >>> volume shadow copies.) >>> >>> --Alex >>> >>> >>> On Oct 5, 2014, at 21:47 , Luís Filipe Nassif <lfc...@gm...> >>> wrote: >>> >>> > Hi, >>> > >>> > We are getting incorrect results with sleuthkit 4.1.3 and 4.2.0 when >>> reading the contents of a lot of windows volume shadow copy files from many >>> disk images. The contents of these files are being reported as zeroed files >>> by sleuthkit. But they are not zeroed files, as reported by other forensic >>> tools. So we are not being able to carve these files using sleuthkit. If we >>> can provide more info to help addressing the issue, please let us know. >>> > >>> > Any help will be appreciated, >>> > Luis Nassif >>> > >>> ------------------------------------------------------------------------------ >>> > Slashdot TV. Videos for Nerds. Stuff that Matters. >>> > >>> http://pubads.g.doubleclick.net/gampad/clk?id=160591471&iu=/4140/ostg.clktrk_______________________________________________ >>> > sleuthkit-users mailing list >>> > https://lists.sourceforge.net/lists/listinfo/sleuthkit-users >>> > http://www.sleuthkit.org >>> >>> >> > |
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From: Atila <ati...@dp...> - 2014-10-09 13:11:12
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In tsk_loaddb, resident files don't get into tsk_file_layout (and sometimes there are two series of sequences to one file, but that's another problem). Maybe the same thing is happening here too? On 08-10-2014 18:34, Luís Filipe Nassif wrote: > Another useful information: the contents of those files are rendered > with a blue color by the hex viewer of Encase, so it means they are > special in some way. Does anyone know what it means? > > 2014-10-06 13:31 GMT-03:00 Luís Filipe Nassif <lfc...@gm... > <mailto:lfc...@gm...>>: > > Hi Alex, > > I am using the Autopsy 3.1 interface to view the files and the > sleuthkit java bindings api within a custom java application to > extract its contents through the ReadContentInputStream class. > > Thanks > Luis > > 2014-10-06 12:38 GMT-03:00 Alex Nelson <ajn...@cs... > <mailto:ajn...@cs...>>: > > Hi Luis, > > > Which of the TSK tools are you using to extract those files? > Could you provide an example command? (I'd forgotten TSK > could do anything with volume shadow copies.) > > --Alex > > > On Oct 5, 2014, at 21:47 , Luís Filipe Nassif > <lfc...@gm... <mailto:lfc...@gm...>> wrote: > > > Hi, > > > > We are getting incorrect results with sleuthkit 4.1.3 and > 4.2.0 when reading the contents of a lot of windows volume > shadow copy files from many disk images. The contents of these > files are being reported as zeroed files by sleuthkit. But > they are not zeroed files, as reported by other forensic > tools. So we are not being able to carve these files using > sleuthkit. If we can provide more info to help addressing the > issue, please let us know. > > > > Any help will be appreciated, > > Luis Nassif > > > ------------------------------------------------------------------------------ > > Slashdot TV. Videos for Nerds. Stuff that Matters. > > > http://pubads.g.doubleclick.net/gampad/clk?id=160591471&iu=/4140/ostg.clktrk_______________________________________________ > > sleuthkit-users mailing list > > https://lists.sourceforge.net/lists/listinfo/sleuthkit-users > > http://www.sleuthkit.org > > > > > > ------------------------------------------------------------------------------ > Meet PCI DSS 3.0 Compliance Requirements with EventLog Analyzer > Achieve PCI DSS 3.0 Compliant Status with Out-of-the-box PCI DSS Reports > Are you Audit-Ready for PCI DSS 3.0 Compliance? Download White paper > Comply to PCI DSS 3.0 Requirement 10 and 11.5 with EventLog Analyzer > http://pubads.g.doubleclick.net/gampad/clk?id=154622311&iu=/4140/ostg.clktrk > > > _______________________________________________ > sleuthkit-users mailing list > https://lists.sourceforge.net/lists/listinfo/sleuthkit-users > http://www.sleuthkit.org |
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From: Luís F. N. <lfc...@gm...> - 2014-10-09 13:32:25
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I think tsk_file_layout is only populated with virtual files, like unallocated clusters, and allocated files do not have entries in that table. 2014-10-09 9:58 GMT-03:00 Atila <ati...@dp...>: > In tsk_loaddb, resident files don't get into tsk_file_layout (and > sometimes there are two series of sequences to one file, but that's another > problem). > Maybe the same thing is happening here too? > > > On 08-10-2014 18:34, Luís Filipe Nassif wrote: > > Another useful information: the contents of those files are rendered with > a blue color by the hex viewer of Encase, so it means they are special in > some way. Does anyone know what it means? > > 2014-10-06 13:31 GMT-03:00 Luís Filipe Nassif <lfc...@gm...>: > >> Hi Alex, >> >> I am using the Autopsy 3.1 interface to view the files and the >> sleuthkit java bindings api within a custom java application to extract its >> contents through the ReadContentInputStream class. >> >> Thanks >> Luis >> >> 2014-10-06 12:38 GMT-03:00 Alex Nelson <ajn...@cs...>: >> >>> Hi Luis, >>> >>> >>> Which of the TSK tools are you using to extract those files? Could you >>> provide an example command? (I'd forgotten TSK could do anything with >>> volume shadow copies.) >>> >>> --Alex >>> >>> >>> On Oct 5, 2014, at 21:47 , Luís Filipe Nassif <lfc...@gm...> >>> wrote: >>> >>> > Hi, >>> > >>> > We are getting incorrect results with sleuthkit 4.1.3 and 4.2.0 when >>> reading the contents of a lot of windows volume shadow copy files from many >>> disk images. The contents of these files are being reported as zeroed files >>> by sleuthkit. But they are not zeroed files, as reported by other forensic >>> tools. So we are not being able to carve these files using sleuthkit. If we >>> can provide more info to help addressing the issue, please let us know. >>> > >>> > Any help will be appreciated, >>> > Luis Nassif >>> > >>> ------------------------------------------------------------------------------ >>> > Slashdot TV. Videos for Nerds. Stuff that Matters. >>> > >>> http://pubads.g.doubleclick.net/gampad/clk?id=160591471&iu=/4140/ostg.clktrk_______________________________________________ >>> > sleuthkit-users mailing list >>> > https://lists.sourceforge.net/lists/listinfo/sleuthkit-users >>> > http://www.sleuthkit.org >>> >>> >> > > > ------------------------------------------------------------------------------ > Meet PCI DSS 3.0 Compliance Requirements with EventLog Analyzer > Achieve PCI DSS 3.0 Compliant Status with Out-of-the-box PCI DSS Reports > Are you Audit-Ready for PCI DSS 3.0 Compliance? Download White paper > Comply to PCI DSS 3.0 Requirement 10 and 11.5 with EventLog Analyzerhttp://pubads.g.doubleclick.net/gampad/clk?id=154622311&iu=/4140/ostg.clktrk > > > > _______________________________________________ > sleuthkit-users mailing listhttps://lists.sourceforge.net/lists/listinfo/sleuthkit-usershttp://www.sleuthkit.org > > > > > ------------------------------------------------------------------------------ > Meet PCI DSS 3.0 Compliance Requirements with EventLog Analyzer > Achieve PCI DSS 3.0 Compliant Status with Out-of-the-box PCI DSS Reports > Are you Audit-Ready for PCI DSS 3.0 Compliance? Download White paper > Comply to PCI DSS 3.0 Requirement 10 and 11.5 with EventLog Analyzer > > http://pubads.g.doubleclick.net/gampad/clk?id=154622311&iu=/4140/ostg.clktrk > _______________________________________________ > sleuthkit-users mailing list > https://lists.sourceforge.net/lists/listinfo/sleuthkit-users > http://www.sleuthkit.org > > |
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From: Luís F. N. <lfc...@gm...> - 2014-10-11 00:49:21
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Jon Stewart has pointed that $BadClus·$Bad files are sparse files. Does
anyone know if that is the case with the {xxxxxxx-xxxx-xxxx-xxxx-
xxxxxxxxxxxx}{3808876b-c176-4e48-b7ae-04046e6cc752} volume shadow files?
If yes, does sleuthkit have support for ntfs sparse files?
Thanks,
Luis
2014-10-08 18:40 GMT-03:00 Luís Filipe Nassif <lfc...@gm...>:
> The blue color are also used to render the contents of $BadClus·$Bad
> files...
>
> 2014-10-08 18:34 GMT-03:00 Luís Filipe Nassif <lfc...@gm...>:
>
> Another useful information: the contents of those files are rendered with
>> a blue color by the hex viewer of Encase, so it means they are special in
>> some way. Does anyone know what it means?
>>
>> 2014-10-06 13:31 GMT-03:00 Luís Filipe Nassif <lfc...@gm...>:
>>
>> Hi Alex,
>>>
>>> I am using the Autopsy 3.1 interface to view the files and the sleuthkit
>>> java bindings api within a custom java application to extract its contents
>>> through the ReadContentInputStream class.
>>>
>>> Thanks
>>> Luis
>>>
>>> 2014-10-06 12:38 GMT-03:00 Alex Nelson <ajn...@cs...>:
>>>
>>>> Hi Luis,
>>>>
>>>>
>>>> Which of the TSK tools are you using to extract those files? Could you
>>>> provide an example command? (I'd forgotten TSK could do anything with
>>>> volume shadow copies.)
>>>>
>>>> --Alex
>>>>
>>>>
>>>> On Oct 5, 2014, at 21:47 , Luís Filipe Nassif <lfc...@gm...>
>>>> wrote:
>>>>
>>>> > Hi,
>>>> >
>>>> > We are getting incorrect results with sleuthkit 4.1.3 and 4.2.0 when
>>>> reading the contents of a lot of windows volume shadow copy files from many
>>>> disk images. The contents of these files are being reported as zeroed files
>>>> by sleuthkit. But they are not zeroed files, as reported by other forensic
>>>> tools. So we are not being able to carve these files using sleuthkit. If we
>>>> can provide more info to help addressing the issue, please let us know.
>>>> >
>>>> > Any help will be appreciated,
>>>> > Luis Nassif
>>>> >
>>>> ------------------------------------------------------------------------------
>>>> > Slashdot TV. Videos for Nerds. Stuff that Matters.
>>>> >
>>>> http://pubads.g.doubleclick.net/gampad/clk?id=160591471&iu=/4140/ostg.clktrk_______________________________________________
>>>> > sleuthkit-users mailing list
>>>> > https://lists.sourceforge.net/lists/listinfo/sleuthkit-users
>>>> > http://www.sleuthkit.org
>>>>
>>>>
>>>
>>
>
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From: Brian C. <ca...@sl...> - 2014-10-16 03:21:29
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TSK/Autopsy support sparse files. If you can run the 'istat' TSK tool on the files, it would be interesting to see what it reports as the layout of the file. this info is not currently available in Autopsy because:
1) We don't populate the layout table in the SQLite table because it is slow and makes the initial ingest take much longer (and we don't really need it because we use the TSK code each time we read the file content, not the DB layout details).
2) We don't display the 'istat' output in Autopsy. But, we really should.
On Oct 10, 2014, at 8:49 PM, Luís Filipe Nassif <lfc...@gm...> wrote:
> Jon Stewart has pointed that $BadClus·$Bad files are sparse files. Does anyone know if that is the case with the {xxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx}{3808876b-c176-4e48-b7ae-04046e6cc752} volume shadow files?
>
> If yes, does sleuthkit have support for ntfs sparse files?
>
> Thanks,
> Luis
>
> 2014-10-08 18:40 GMT-03:00 Luís Filipe Nassif <lfc...@gm...>:
> The blue color are also used to render the contents of $BadClus·$Bad files...
>
> 2014-10-08 18:34 GMT-03:00 Luís Filipe Nassif <lfc...@gm...>:
>
> Another useful information: the contents of those files are rendered with a blue color by the hex viewer of Encase, so it means they are special in some way. Does anyone know what it means?
>
> 2014-10-06 13:31 GMT-03:00 Luís Filipe Nassif <lfc...@gm...>:
>
> Hi Alex,
>
> I am using the Autopsy 3.1 interface to view the files and the sleuthkit java bindings api within a custom java application to extract its contents through the ReadContentInputStream class.
>
> Thanks
> Luis
>
> 2014-10-06 12:38 GMT-03:00 Alex Nelson <ajn...@cs...>:
> Hi Luis,
>
>
> Which of the TSK tools are you using to extract those files? Could you provide an example command? (I'd forgotten TSK could do anything with volume shadow copies.)
>
> --Alex
>
>
> On Oct 5, 2014, at 21:47 , Luís Filipe Nassif <lfc...@gm...> wrote:
>
> > Hi,
> >
> > We are getting incorrect results with sleuthkit 4.1.3 and 4.2.0 when reading the contents of a lot of windows volume shadow copy files from many disk images. The contents of these files are being reported as zeroed files by sleuthkit. But they are not zeroed files, as reported by other forensic tools. So we are not being able to carve these files using sleuthkit. If we can provide more info to help addressing the issue, please let us know.
> >
> > Any help will be appreciated,
> > Luis Nassif
> > ------------------------------------------------------------------------------
> > Slashdot TV. Videos for Nerds. Stuff that Matters.
> > http://pubads.g.doubleclick.net/gampad/clk?id=160591471&iu=/4140/ostg.clktrk_______________________________________________
> > sleuthkit-users mailing list
> > https://lists.sourceforge.net/lists/listinfo/sleuthkit-users
> > http://www.sleuthkit.org
>
>
>
>
>
> ------------------------------------------------------------------------------
> Meet PCI DSS 3.0 Compliance Requirements with EventLog Analyzer
> Achieve PCI DSS 3.0 Compliant Status with Out-of-the-box PCI DSS Reports
> Are you Audit-Ready for PCI DSS 3.0 Compliance? Download White paper
> Comply to PCI DSS 3.0 Requirement 10 and 11.5 with EventLog Analyzer
> http://p.sf.net/sfu/Zoho_______________________________________________
> sleuthkit-users mailing list
> https://lists.sourceforge.net/lists/listinfo/sleuthkit-users
> http://www.sleuthkit.org
|
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From: Luís F. N. <lfc...@gm...> - 2014-10-16 20:43:43
|
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...
[truncated message content] |
|
From: Luís F. N. <lfc...@gm...> - 2014-11-08 14:38:03
|
Hi,
Did someone take a look at the istat output? It is very strange, with a lot
of zeros being the sectors used by the file.
Luis
2014-10-16 17:43 GMT-03:00 Luís Filipe Nassif <lfc...@gm...>:
> Another smaller output...
>
>
> 2014-10-16 17:22 GMT-03:00 Luís Filipe Nassif <lfc...@gm...>:
>
> Hi Brian,
>>
>> I have attached the output of istat (sleuthkit 4.1.3) after executed on
>> one of those files.
>>
>> Thank you,
>> Luis
>>
>> 2014-10-16 0:21 GMT-03:00 Brian Carrier <ca...@sl...>:
>>
>> TSK/Autopsy support sparse files. If you can run the 'istat' TSK tool on
>>> the files, it would be interesting to see what it reports as the layout of
>>> the file. this info is not currently available in Autopsy because:
>>>
>>> 1) We don't populate the layout table in the SQLite table because it is
>>> slow and makes the initial ingest take much longer (and we don't really
>>> need it because we use the TSK code each time we read the file content, not
>>> the DB layout details).
>>> 2) We don't display the 'istat' output in Autopsy. But, we really should.
>>>
>>>
>>> On Oct 10, 2014, at 8:49 PM, Luís Filipe Nassif <lfc...@gm...>
>>> wrote:
>>>
>>> > Jon Stewart has pointed that $BadClus·$Bad files are sparse files.
>>> Does anyone know if that is the case with the
>>> {xxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx}{3808876b-c176-4e48-b7ae-04046e6cc752}
>>> volume shadow files?
>>> >
>>> > If yes, does sleuthkit have support for ntfs sparse files?
>>> >
>>> > Thanks,
>>> > Luis
>>> >
>>> > 2014-10-08 18:40 GMT-03:00 Luís Filipe Nassif <lfc...@gm...>:
>>> > The blue color are also used to render the contents of $BadClus·$Bad
>>> files...
>>> >
>>> > 2014-10-08 18:34 GMT-03:00 Luís Filipe Nassif <lfc...@gm...>:
>>> >
>>> > Another useful information: the contents of those files are rendered
>>> with a blue color by the hex viewer of Encase, so it means they are special
>>> in some way. Does anyone know what it means?
>>> >
>>> > 2014-10-06 13:31 GMT-03:00 Luís Filipe Nassif <lfc...@gm...>:
>>> >
>>> > Hi Alex,
>>> >
>>> > I am using the Autopsy 3.1 interface to view the files and the
>>> sleuthkit java bindings api within a custom java application to extract its
>>> contents through the ReadContentInputStream class.
>>> >
>>> > Thanks
>>> > Luis
>>> >
>>> > 2014-10-06 12:38 GMT-03:00 Alex Nelson <ajn...@cs...>:
>>> > Hi Luis,
>>> >
>>> >
>>> > Which of the TSK tools are you using to extract those files? Could
>>> you provide an example command? (I'd forgotten TSK could do anything with
>>> volume shadow copies.)
>>> >
>>> > --Alex
>>> >
>>> >
>>> > On Oct 5, 2014, at 21:47 , Luís Filipe Nassif <lfc...@gm...>
>>> wrote:
>>> >
>>> > > Hi,
>>> > >
>>> > > We are getting incorrect results with sleuthkit 4.1.3 and 4.2.0 when
>>> reading the contents of a lot of windows volume shadow copy files from many
>>> disk images. The contents of these files are being reported as zeroed files
>>> by sleuthkit. But they are not zeroed files, as reported by other forensic
>>> tools. So we are not being able to carve these files using sleuthkit. If we
>>> can provide more info to help addressing the issue, please let us know.
>>> > >
>>> > > Any help will be appreciated,
>>> > > Luis Nassif
>>> > >
>>> ------------------------------------------------------------------------------
>>> > > Slashdot TV. Videos for Nerds. Stuff that Matters.
>>> > >
>>> http://pubads.g.doubleclick.net/gampad/clk?id=160591471&iu=/4140/ostg.clktrk_______________________________________________
>>> > > sleuthkit-users mailing list
>>> > > https://lists.sourceforge.net/lists/listinfo/sleuthkit-users
>>> > > http://www.sleuthkit.org
>>> >
>>> >
>>> >
>>> >
>>> >
>>> >
>>> ------------------------------------------------------------------------------
>>> > Meet PCI DSS 3.0 Compliance Requirements with EventLog Analyzer
>>> > Achieve PCI DSS 3.0 Compliant Status with Out-of-the-box PCI DSS
>>> Reports
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>>> > Comply to PCI DSS 3.0 Requirement 10 and 11.5 with EventLog Analyzer
>>> >
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>>> > https://lists.sourceforge.net/lists/listinfo/sleuthkit-users
>>> > http://www.sleuthkit.org
>>>
>>>
>>
>
|
|
From: Luís F. N. <lfc...@gm...> - 2015-01-07 16:32:50
|
MFT Entry Header Values:
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Security ID: 925 (S-1-5-32-544)
Last User Journal Update Sequence Number: 1563189584
Created: 2014-02-28 15:43:39 (Hora oficial do Brasil)
File Modified: 2014-03-05 17:40:08 (Hora oficial do Brasil)
MFT Modified: 2014-03-05 17:40:08 (Hora oficial do Brasil)
Accessed: 2014-02-28 15:43:39 (Hora oficial do Brasil)
$FILE_NAME Attribute Values:
Flags: Hidden, System, Archive
Name: {0e8797c4-9fd0-11e3-beb0-50b7c343bde4}{3808876b-c176-4e48-b7ae-04046e6cc752}
Parent MFT Entry: 37 Sequence: 2
Allocated Size: 335544320 Actual Size: 0
Created: 2014-02-28 15:43:39 (Hora oficial do Brasil)
File Modified: 2014-02-28 15:43:39 (Hora oficial do Brasil)
MFT Modified: 2014-02-28 15:43:39 (Hora oficial do Brasil)
Accessed: 2014-02-28 15:43:39 (Hora oficial do Brasil)
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[truncated message content] |
|
From: Gabriel F. <gab...@gm...> - 2016-01-16 22:17:00
Attachments:
ntfs_patch_volume_shadow.txt
|
Hi, I'm having problems too with Volume Shadow files at the TSK (icat, istat), including TSK 4.2 (same behaviour indicated by Nassif). The problem with this type of file is caused by the attribute "initialized stream size" or "Valid Data Length size" (VDL size). Apparently, Microsoft has forced it's value to zero to make these files "invisible" to the normal Windows Backup process (https://secureartisan.wordpress.com/2011/01/29/dc3-2011-day-2-and-3/). I don't have much familiarity with the TSK code, but I wrote one possible solution to this problem, altering the "tsk/fs/ntfs.c" file, at the "ntfs_proc_attrseq" funtion, adding a test to set "initsize" to "ssize" when "initsize" it's equal to zero. But I don't know if this solution will cause problems with other types of files (like sparse or virtual files) in NTFS. I didn't find a way to limit this test only to the Volume Shadow Files, but it worked properly in my few test images. I'm sending the patch attached only to illustrate my message, because I think that other users or TSK developers could implement a better solution to this problem. Other references related to this problem: https://github.com/sleuthkit/sleuthkit/issues/466 - [Windows Volume Shadow Copy Files incorrectly decoded] http://sourceforge.net/p/sleuthkit/mailman/message/22341633/ - ([sleuthkit-developers] [ sleuthkit-Bugs-2367426 ] Fix NTFS VDL Slack bug) https://secureartisan.wordpress.com/2011/01/29/dc3-2011-day-2-and-3/ - [VDL Slack in NTFS – David G Ferguson] Gabriel On Wed, Jan 7, 2015 at 2:32 PM, Luís Filipe Nassif <lfc...@gm...> wrote: > Did someone have time to look at the istat output? It is attached again. > > Thank you, > Luis > > ------------------------------------------------------------------------------ > Dive into the World of Parallel Programming! The Go Parallel Website, > sponsored by Intel and developed in partnership with Slashdot Media, is your > hub for all things parallel software development, from weekly thought > leadership blogs to news, videos, case studies, tutorials and more. Take a > look and join the conversation now. http://goparallel.sourceforge.net > _______________________________________________ > sleuthkit-users mailing list > https://lists.sourceforge.net/lists/listinfo/sleuthkit-users > http://www.sleuthkit.org > |
|
From: Luís F. N. <lfc...@gm...> - 2016-01-18 11:11:57
|
Hum, maybe testing the file name for the presence of
{3808876b-c176-4e48-b7ae-04046e6cc752} can restrict the patch only to VSS
files?
Luis
2016-01-16 20:16 GMT-02:00 Gabriel Francisco <gab...@gm...>:
> Hi,
>
> I'm having problems too with Volume Shadow files at the TSK (icat,
> istat), including TSK 4.2 (same behaviour indicated by Nassif). The
> problem with this type of file is caused by the attribute "initialized
> stream size" or "Valid Data Length size" (VDL size). Apparently,
> Microsoft has forced it's value to zero to make these files
> "invisible" to the normal Windows Backup process
> (https://secureartisan.wordpress.com/2011/01/29/dc3-2011-day-2-and-3/).
>
> I don't have much familiarity with the TSK code, but I wrote one
> possible solution to this problem, altering the "tsk/fs/ntfs.c" file,
> at the "ntfs_proc_attrseq" funtion, adding a test to set "initsize" to
> "ssize" when "initsize" it's equal to zero. But I don't know if this
> solution will cause problems with other types of files (like sparse or
> virtual files) in NTFS. I didn't find a way to limit this test only to
> the Volume Shadow Files, but it worked properly in my few test images.
>
> I'm sending the patch attached only to illustrate my message, because
> I think that other users or TSK developers could implement a better
> solution to this problem.
>
> Other references related to this problem:
> https://github.com/sleuthkit/sleuthkit/issues/466 - [Windows Volume
> Shadow Copy Files incorrectly decoded]
> http://sourceforge.net/p/sleuthkit/mailman/message/22341633/ -
> ([sleuthkit-developers] [ sleuthkit-Bugs-2367426 ] Fix NTFS VDL Slack
> bug)
> https://secureartisan.wordpress.com/2011/01/29/dc3-2011-day-2-and-3/ -
> [VDL Slack in NTFS – David G Ferguson]
>
> Gabriel
>
>
> On Wed, Jan 7, 2015 at 2:32 PM, Luís Filipe Nassif <lfc...@gm...>
> wrote:
> > Did someone have time to look at the istat output? It is attached again.
> >
> > Thank you,
> > Luis
> >
> >
> ------------------------------------------------------------------------------
> > Dive into the World of Parallel Programming! The Go Parallel Website,
> > sponsored by Intel and developed in partnership with Slashdot Media, is
> your
> > hub for all things parallel software development, from weekly thought
> > leadership blogs to news, videos, case studies, tutorials and more. Take
> a
> > look and join the conversation now. http://goparallel.sourceforge.net
> > _______________________________________________
> > sleuthkit-users mailing list
> > https://lists.sourceforge.net/lists/listinfo/sleuthkit-users
> > http://www.sleuthkit.org
> >
>
|
|
From: Luís F. N. <lfc...@gm...> - 2016-01-26 01:06:33
|
Could a NTFS expert kindly take a look at Gabriel's patch? I think it is
important to have a fix, so VSS files could be properly hashed, indexed,
carved, etc.
Luis
2016-01-18 9:11 GMT-02:00 Luís Filipe Nassif <lfc...@gm...>:
> Hum, maybe testing the file name for the presence of
> {3808876b-c176-4e48-b7ae-04046e6cc752} can restrict the patch only to VSS
> files?
>
> Luis
>
> 2016-01-16 20:16 GMT-02:00 Gabriel Francisco <gab...@gm...>:
>
>> Hi,
>>
>> I'm having problems too with Volume Shadow files at the TSK (icat,
>> istat), including TSK 4.2 (same behaviour indicated by Nassif). The
>> problem with this type of file is caused by the attribute "initialized
>> stream size" or "Valid Data Length size" (VDL size). Apparently,
>> Microsoft has forced it's value to zero to make these files
>> "invisible" to the normal Windows Backup process
>> (https://secureartisan.wordpress.com/2011/01/29/dc3-2011-day-2-and-3/).
>>
>> I don't have much familiarity with the TSK code, but I wrote one
>> possible solution to this problem, altering the "tsk/fs/ntfs.c" file,
>> at the "ntfs_proc_attrseq" funtion, adding a test to set "initsize" to
>> "ssize" when "initsize" it's equal to zero. But I don't know if this
>> solution will cause problems with other types of files (like sparse or
>> virtual files) in NTFS. I didn't find a way to limit this test only to
>> the Volume Shadow Files, but it worked properly in my few test images.
>>
>> I'm sending the patch attached only to illustrate my message, because
>> I think that other users or TSK developers could implement a better
>> solution to this problem.
>>
>> Other references related to this problem:
>> https://github.com/sleuthkit/sleuthkit/issues/466 - [Windows Volume
>> Shadow Copy Files incorrectly decoded]
>> http://sourceforge.net/p/sleuthkit/mailman/message/22341633/ -
>> ([sleuthkit-developers] [ sleuthkit-Bugs-2367426 ] Fix NTFS VDL Slack
>> bug)
>> https://secureartisan.wordpress.com/2011/01/29/dc3-2011-day-2-and-3/ -
>> [VDL Slack in NTFS – David G Ferguson]
>>
>> Gabriel
>>
>>
>> On Wed, Jan 7, 2015 at 2:32 PM, Luís Filipe Nassif <lfc...@gm...>
>> wrote:
>> > Did someone have time to look at the istat output? It is attached again.
>> >
>> > Thank you,
>> > Luis
>> >
>> >
>> ------------------------------------------------------------------------------
>> > Dive into the World of Parallel Programming! The Go Parallel Website,
>> > sponsored by Intel and developed in partnership with Slashdot Media, is
>> your
>> > hub for all things parallel software development, from weekly thought
>> > leadership blogs to news, videos, case studies, tutorials and more.
>> Take a
>> > look and join the conversation now. http://goparallel.sourceforge.net
>> > _______________________________________________
>> > sleuthkit-users mailing list
>> > https://lists.sourceforge.net/lists/listinfo/sleuthkit-users
>> > http://www.sleuthkit.org
>> >
>>
>
>
|
|
From: Luís F. N. <lfc...@gm...> - 2016-05-03 16:27:45
|
Any chance of reviewing and committing Gabriel's patch before the next
release?
Luis
2016-01-25 23:06 GMT-02:00 Luís Filipe Nassif <lfc...@gm...>:
> Could a NTFS expert kindly take a look at Gabriel's patch? I think it is
> important to have a fix, so VSS files could be properly hashed, indexed,
> carved, etc.
>
> Luis
>
> 2016-01-18 9:11 GMT-02:00 Luís Filipe Nassif <lfc...@gm...>:
>
>> Hum, maybe testing the file name for the presence of
>> {3808876b-c176-4e48-b7ae-04046e6cc752} can restrict the patch only to VSS
>> files?
>>
>> Luis
>>
>> 2016-01-16 20:16 GMT-02:00 Gabriel Francisco <gab...@gm...>
>> :
>>
>>> Hi,
>>>
>>> I'm having problems too with Volume Shadow files at the TSK (icat,
>>> istat), including TSK 4.2 (same behaviour indicated by Nassif). The
>>> problem with this type of file is caused by the attribute "initialized
>>> stream size" or "Valid Data Length size" (VDL size). Apparently,
>>> Microsoft has forced it's value to zero to make these files
>>> "invisible" to the normal Windows Backup process
>>> (https://secureartisan.wordpress.com/2011/01/29/dc3-2011-day-2-and-3/).
>>>
>>> I don't have much familiarity with the TSK code, but I wrote one
>>> possible solution to this problem, altering the "tsk/fs/ntfs.c" file,
>>> at the "ntfs_proc_attrseq" funtion, adding a test to set "initsize" to
>>> "ssize" when "initsize" it's equal to zero. But I don't know if this
>>> solution will cause problems with other types of files (like sparse or
>>> virtual files) in NTFS. I didn't find a way to limit this test only to
>>> the Volume Shadow Files, but it worked properly in my few test images.
>>>
>>> I'm sending the patch attached only to illustrate my message, because
>>> I think that other users or TSK developers could implement a better
>>> solution to this problem.
>>>
>>> Other references related to this problem:
>>> https://github.com/sleuthkit/sleuthkit/issues/466 - [Windows Volume
>>> Shadow Copy Files incorrectly decoded]
>>> http://sourceforge.net/p/sleuthkit/mailman/message/22341633/ -
>>> ([sleuthkit-developers] [ sleuthkit-Bugs-2367426 ] Fix NTFS VDL Slack
>>> bug)
>>> https://secureartisan.wordpress.com/2011/01/29/dc3-2011-day-2-and-3/ -
>>> [VDL Slack in NTFS – David G Ferguson]
>>>
>>> Gabriel
>>>
>>>
>>> On Wed, Jan 7, 2015 at 2:32 PM, Luís Filipe Nassif <lfc...@gm...>
>>> wrote:
>>> > Did someone have time to look at the istat output? It is attached
>>> again.
>>> >
>>> > Thank you,
>>> > Luis
>>> >
>>> >
>>> ------------------------------------------------------------------------------
>>> > Dive into the World of Parallel Programming! The Go Parallel Website,
>>> > sponsored by Intel and developed in partnership with Slashdot Media,
>>> is your
>>> > hub for all things parallel software development, from weekly thought
>>> > leadership blogs to news, videos, case studies, tutorials and more.
>>> Take a
>>> > look and join the conversation now. http://goparallel.sourceforge.net
>>> > _______________________________________________
>>> > sleuthkit-users mailing list
>>> > https://lists.sourceforge.net/lists/listinfo/sleuthkit-users
>>> > http://www.sleuthkit.org
>>> >
>>>
>>
>>
>
|
|
From: Brian C. <ca...@sl...> - 2016-05-11 14:03:26
|
I posted my comments on the github issue to have a central place for this: https://github.com/sleuthkit/sleuthkit/issues/466 Basic take away is that the data is available right now if you use ‘icat -s’ to look at slack space (at least it was on my system). Autopsy does not let you view this though, so this could bump that feature up in priority. The suggested patch as it stands is too broad and would get rid of the idea of VDL slack for all files, which would be confusing. It should be restricted to just VSS files (as was already suggested), but then it could cause confusion between tools if those tools are reporting the initialized size as 0. > On May 3, 2016, at 12:27 PM, Luís Filipe Nassif <lfc...@gm...> wrote: > > Any chance of reviewing and committing Gabriel's patch before the next release? > > Luis > > 2016-01-25 23:06 GMT-02:00 Luís Filipe Nassif <lfc...@gm...>: > Could a NTFS expert kindly take a look at Gabriel's patch? I think it is important to have a fix, so VSS files could be properly hashed, indexed, carved, etc. > > Luis > > 2016-01-18 9:11 GMT-02:00 Luís Filipe Nassif <lfc...@gm...>: > Hum, maybe testing the file name for the presence of {3808876b-c176-4e48-b7ae-04046e6cc752} can restrict the patch only to VSS files? > > Luis > > 2016-01-16 20:16 GMT-02:00 Gabriel Francisco <gab...@gm...>: > Hi, > > I'm having problems too with Volume Shadow files at the TSK (icat, > istat), including TSK 4.2 (same behaviour indicated by Nassif). The > problem with this type of file is caused by the attribute "initialized > stream size" or "Valid Data Length size" (VDL size). Apparently, > Microsoft has forced it's value to zero to make these files > "invisible" to the normal Windows Backup process > (https://secureartisan.wordpress.com/2011/01/29/dc3-2011-day-2-and-3/). > > I don't have much familiarity with the TSK code, but I wrote one > possible solution to this problem, altering the "tsk/fs/ntfs.c" file, > at the "ntfs_proc_attrseq" funtion, adding a test to set "initsize" to > "ssize" when "initsize" it's equal to zero. But I don't know if this > solution will cause problems with other types of files (like sparse or > virtual files) in NTFS. I didn't find a way to limit this test only to > the Volume Shadow Files, but it worked properly in my few test images. > > I'm sending the patch attached only to illustrate my message, because > I think that other users or TSK developers could implement a better > solution to this problem. > > Other references related to this problem: > https://github.com/sleuthkit/sleuthkit/issues/466 - [Windows Volume > Shadow Copy Files incorrectly decoded] > http://sourceforge.net/p/sleuthkit/mailman/message/22341633/ - > ([sleuthkit-developers] [ sleuthkit-Bugs-2367426 ] Fix NTFS VDL Slack > bug) > https://secureartisan.wordpress.com/2011/01/29/dc3-2011-day-2-and-3/ - > [VDL Slack in NTFS – David G Ferguson] > > Gabriel > > > On Wed, Jan 7, 2015 at 2:32 PM, Luís Filipe Nassif <lfc...@gm...> wrote: > > Did someone have time to look at the istat output? It is attached again. > > > > Thank you, > > Luis > > > > ------------------------------------------------------------------------------ > > Dive into the World of Parallel Programming! The Go Parallel Website, > > sponsored by Intel and developed in partnership with Slashdot Media, is your > > hub for all things parallel software development, from weekly thought > > leadership blogs to news, videos, case studies, tutorials and more. Take a > > look and join the conversation now. http://goparallel.sourceforge.net > > _______________________________________________ > > sleuthkit-users mailing list > > https://lists.sourceforge.net/lists/listinfo/sleuthkit-users > > http://www.sleuthkit.org > > > > > > ------------------------------------------------------------------------------ > Find and fix application performance issues faster with Applications Manager > Applications Manager provides deep performance insights into multiple tiers of > your business applications. It resolves application problems quickly and > reduces your MTTR. Get your free trial! > https://ad.doubleclick.net/ddm/clk/302982198;130105516;z_______________________________________________ > sleuthkit-users mailing list > https://lists.sourceforge.net/lists/listinfo/sleuthkit-users > http://www.sleuthkit.org |
|
From: Luís F. N. <lfc...@gm...> - 2016-05-11 15:42:12
|
Thank you Brian for the great explanation. I posted my comments at github issue too. Luis 2016-05-11 11:03 GMT-03:00 Brian Carrier <ca...@sl...>: > I posted my comments on the github issue to have a central place for this: > > https://github.com/sleuthkit/sleuthkit/issues/466 > > Basic take away is that the data is available right now if you use ‘icat > -s’ to look at slack space (at least it was on my system). Autopsy does > not let you view this though, so this could bump that feature up in > priority. The suggested patch as it stands is too broad and would get rid > of the idea of VDL slack for all files, which would be confusing. It should > be restricted to just VSS files (as was already suggested), but then it > could cause confusion between tools if those tools are reporting the > initialized size as 0. > > > > > > On May 3, 2016, at 12:27 PM, Luís Filipe Nassif <lfc...@gm...> > wrote: > > > > Any chance of reviewing and committing Gabriel's patch before the next > release? > > > > Luis > > > > 2016-01-25 23:06 GMT-02:00 Luís Filipe Nassif <lfc...@gm...>: > > Could a NTFS expert kindly take a look at Gabriel's patch? I think it is > important to have a fix, so VSS files could be properly hashed, indexed, > carved, etc. > > > > Luis > > > > 2016-01-18 9:11 GMT-02:00 Luís Filipe Nassif <lfc...@gm...>: > > Hum, maybe testing the file name for the presence of > {3808876b-c176-4e48-b7ae-04046e6cc752} can restrict the patch only to VSS > files? > > > > Luis > > > > 2016-01-16 20:16 GMT-02:00 Gabriel Francisco <gab...@gm... > >: > > Hi, > > > > I'm having problems too with Volume Shadow files at the TSK (icat, > > istat), including TSK 4.2 (same behaviour indicated by Nassif). The > > problem with this type of file is caused by the attribute "initialized > > stream size" or "Valid Data Length size" (VDL size). Apparently, > > Microsoft has forced it's value to zero to make these files > > "invisible" to the normal Windows Backup process > > (https://secureartisan.wordpress.com/2011/01/29/dc3-2011-day-2-and-3/). > > > > I don't have much familiarity with the TSK code, but I wrote one > > possible solution to this problem, altering the "tsk/fs/ntfs.c" file, > > at the "ntfs_proc_attrseq" funtion, adding a test to set "initsize" to > > "ssize" when "initsize" it's equal to zero. But I don't know if this > > solution will cause problems with other types of files (like sparse or > > virtual files) in NTFS. I didn't find a way to limit this test only to > > the Volume Shadow Files, but it worked properly in my few test images. > > > > I'm sending the patch attached only to illustrate my message, because > > I think that other users or TSK developers could implement a better > > solution to this problem. > > > > Other references related to this problem: > > https://github.com/sleuthkit/sleuthkit/issues/466 - [Windows Volume > > Shadow Copy Files incorrectly decoded] > > http://sourceforge.net/p/sleuthkit/mailman/message/22341633/ - > > ([sleuthkit-developers] [ sleuthkit-Bugs-2367426 ] Fix NTFS VDL Slack > > bug) > > https://secureartisan.wordpress.com/2011/01/29/dc3-2011-day-2-and-3/ - > > [VDL Slack in NTFS – David G Ferguson] > > > > Gabriel > > > > > > On Wed, Jan 7, 2015 at 2:32 PM, Luís Filipe Nassif <lfc...@gm...> > wrote: > > > Did someone have time to look at the istat output? It is attached > again. > > > > > > Thank you, > > > Luis > > > > > > > ------------------------------------------------------------------------------ > > > Dive into the World of Parallel Programming! The Go Parallel Website, > > > sponsored by Intel and developed in partnership with Slashdot Media, > is your > > > hub for all things parallel software development, from weekly thought > > > leadership blogs to news, videos, case studies, tutorials and more. > Take a > > > look and join the conversation now. http://goparallel.sourceforge.net > > > _______________________________________________ > > > sleuthkit-users mailing list > > > https://lists.sourceforge.net/lists/listinfo/sleuthkit-users > > > http://www.sleuthkit.org > > > > > > > > > > > > ------------------------------------------------------------------------------ > > Find and fix application performance issues faster with Applications > Manager > > Applications Manager provides deep performance insights into multiple > tiers of > > your business applications. It resolves application problems quickly and > > reduces your MTTR. Get your free trial! > > > https://ad.doubleclick.net/ddm/clk/302982198;130105516;z_______________________________________________ > > sleuthkit-users mailing list > > https://lists.sourceforge.net/lists/listinfo/sleuthkit-users > > http://www.sleuthkit.org > > |
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