@port139 Blog

基本的にはデジタル・フォレンジックの技術について取り扱っていますが、記載内容には高確率で誤りが含まれる可能性があります。

File System Tunneling and C:\

Note:I translated Japanese into English using Google Translate.
Thank you, Google.

Last week I enjoyed File System Tunneling.
Unfortunately, I could not reproduce File System Tunneling with NTFS 'E: drive. This time I use the C: drive for testing.

Also, last time I did not refer to the USN journal and $LogFile.

Can I find out the occurrence of File System Tunneling from the USN Journal?

Copy the owl image file to the C:\Pictures folder.

f:id:hideakii:20181019082238p:plain

Check the USN journal and the timestamp.

>fsutil usn readjournal c:

f:id:hideakii:20181019082425p:plain

f:id:hideakii:20181019083825p:plain

Delete the file owl.jpg and create the same file name.

f:id:hideakii:20181019084337p:plain

Use usn_analytics to parse the USN journal.

f:id:hideakii:20181019085116p:plain

Let's check the parsing result.
I was expecting a record of "Basic Info Change", but it was not there.

f:id:hideakii:20181019085621p:plain

Confirm the meta information of the created file.
The timestamp of Created is restored by File System Tunneling. (Created time stamps of $SI and $FN, both have been restored.)

f:id:hideakii:20181019090039p:plain

Use LogFileParser to parse $LogFile and check the record of owl.jpg. 

When you confirm the InitializeFileRecordSegment, Created time stamp has restored value appeared.

f:id:hideakii:20181019094630p:plain

Next, try changing the file name. I copied the owl.tmp file to the Pictures folder.

f:id:hideakii:20181019153423p:plain

f:id:hideakii:20181019153629p:plain

Confirm the parse result of USN journal, Basic Info Change is not recorded.

f:id:hideakii:20181019154719p:plain

Confirm Created time stamp with file meta information.
Interestingly, the Created timestamp of $FN was not updated.

f:id:hideakii:20181019155201p:plain

Check the record in $ LogFile.

f:id:hideakii:20181019164842p:plain

.....If a FILE record already exists, the Created timestamp of $SI is restored and $FN is not restored?

 

Verification environment: Windows 10 1083

Reference URL:

 

f:id:hideakii:20181019080111j:plain