full-disclosure - Strange Lenovo x121e

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Date: Wed, 05 Oct 2011 19:57:03 +0000
From: halfdog <me@...fdog.net>
To: full-disclosure@...ts.grok.org.uk
Subject: Strange Lenovo x121e

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Hello List,

I just puchased a Lenovo x121e and just before init with random data
and setting up the crypto disks, I found that the disk was not
completely clean. It seems that

a) X121 ships with a dirty disk or
b) machine was used before purchase

After reconstruction of bootsector, a NTFS partition is readable,
pagefile.sys shows
  COMPUTERNAME=ADMIN-THINK

Newest files in /
dr-x------  1 root root      28672 May 29 09:45 SWDL
- -r--------  2 root root       2490 May 29 09:36 ExitWinXP.bat
dr-x------  1 root root       4096 Apr  6 13:59 WWAN1
dr-x------  1 root root          0 Mar  1  2011 Temp
dr-x------  1 root root          0 Jan  6  2011 $Recycle.Bin
dr-x------  1 root root       4096 Jan  6  2011 Users
dr-x------  1 root root          0 Jan  6  2011 Intel
- -r--------  2 root root       1959 Oct  2  2010 bluetooth.txt

Funny: Might also be infected with virus, that generated sal.xls.exe

- -r--------  2 root root       4810 Oct 13  2007
\346\270\205\351\231\244sal.xls.exe\347\227\205\346\257\222.bat

The non-printables seem to be UTF-8 and display as Chinese glyphs on
other machine.

I'm complete noob in win-forensics, but at least it seems, that there
is no evidence for other user accounts, Documents & Settings empty, so
perhaps this could really be an authentic IBM OEM image (with virus),
but they just replaced the boot sector to get rid of the partitions?

Since I don't want to waste too much time on dirty hardware, I did
some googling, but found nothing of value.

Does someone know of similar findings on Lenovo machines and what's
your guess: is it worth to dig in deeper or is it just waste of time
to recover OEM-Windows image, that was deflowered and insufficiently
cleaned by some Chinese factory worker during lunch hours?

hd

- -- 
http://www.halfdog.net/
PGP: 156A AE98 B91F 0114 FE88  2BD8 C459 9386 feed a bee
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