Question

finding filesize from a deleted file

Asked by: medfacit


From an XP machine, a file was deleted from a samba share, and we'd like to find out the file size of that file.  

Just curious if XP/Excel would have a record of that anywhere.

That much detail wasn't logged in the samba logs. But i'm not sure where else to look for that kind of info. The samba server is running RHEL4.3. There was also a backup server running CentOS5.2

Thanks.

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Asked On
2009-08-23 at 18:50:52ID24675403
Tags

windows

,

xp

,

samba

,

linux

,

deleted

Topics

Digital Forensics

,

Windows XP Operating System

,

Samba File Server

Participating Experts
3
Points
500
Comments
6

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Answers

 

by: KeremEPosted on 2009-08-23 at 19:18:55ID: 25165279

Hi,

XP and Excel would have no record on the file size of a deleted file neither does samba. All you could do is try to recover the file using a file recover tool if you cant. This is all you could gonna have.

Cheers,
K.

 

by: pankusareenPosted on 2009-08-23 at 22:05:31ID: 25165707

KeremE is right.
u can try ontrackdatarecovery and in the recovery option it will show u the file size
http://www.ontrackdatarecovery.com/

 

by: sandy771Posted on 2009-08-24 at 08:08:04ID: 25169086

As this is the forensics section I will go for a couple of forensic answers

Try looking for link files (windows shortcuts) that referenced your deleted file(s) these will have the size of the file that was pointed to embedded within them, be aware though that the file size will be the size of the file at the time that the shortcut was created - i f the file is dynamic then this might not be the size when it was deleted.

If you search for the file name (make sure you also search using unicode) then you might find a fragment of a directory entry/mft record again this would have the file size embedded within it.

Just a couple of ideas off the top of my head

 

by: pankusareenPosted on 2009-08-24 at 09:18:02ID: 25169835

U can refer to this may be u get some help
http://www.pcguide.com/vb/archive/index.php/t-16890.html

 

by: KeremEPosted on 2009-08-24 at 17:39:55ID: 25173783

For any OS to track the changes there must be either a data structure or some kind of audit logging mechanism to be exist.  In fact this type of transaction and file autditing is missing in XP. When it comes to Samba it can give you this trailing or even more logs but it is basically off by default. What you can do further is to forget the past and incresa the logging level of your samba daemon.

But keep in mind that more data is like less data. If you cant make anything in a reasonable time period you won't know what is in the logs so it is simlar to the situation where you have no logs at all. So pleas increase it to a level that you can further audit the logs as they are created in a little time lag.

 

by: medfacitPosted on 2009-08-26 at 03:23:56ID: 31619470

We were unable to find any details of the file on the the client machine.
(The file was recovered from tape in which the inodes were deleted.. almost a week long job)

20120131-EE-VQP-002

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