Cloud Artifacts

Dropbox

Configuration

Windows XP

C:\Documents and Settings\%USERNAME%\Application Data\Dropbox\
C:\Documents and Settings\%USERNAME%\Local Settings\Application Data\Dropbox\

Windows Vista and later

C:\Users\%USERNAME%\AppData\Local\Dropbox\
C:\Users\%USERNAME%\AppData\Roaming\Dropbox\

Mac OS X

/Users/$USER/.dropbox/

Linux

/home/$USER/.dropbox/

• Configuration files are mostly encrypted

host.dbx/ host.db

host.dbx and host.db is not encrypted and can be accessed, it contains the local folder name used to sync the account. The folder name is encoded in Base64

filecache.dbx and filecache.db

• Filecache.dbx located in the folder

C:\Documents and Settings\<username>\Application Data\Dropbox

• Windows Protection Folder

  C:\Documents and Settings\<username>\Application Data\Microsoft\Protect

• Registry value

  NTUSER.DAT\Software\Dropbox\ks\Client

• User’s password

The decrypted filecache.db contains:

• Server path

• Local file name

• Local creation time

• Local modified time

• Local size

cloud_entry_table

local_entry_table

Installation

SYSTEM\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\FirewallRules
SOFTWARE\Microsoft\CurrentVersion\Explorer\ShellIconOverlayIdentifiers\DropBoxExt1
SOFTWARE\Microsoft\CurrentVersion\Explorer\ShellIconOverlayIdentifiers\DropBoxExt1
SOFTWARE\Microsoft\CurrentVersion\Explorer\ShellIconOverlayIdentifiers\DropBoxExt1
NTUSER\Software\Microsoft\Windows\CurrentVersion\Uninstall\Dropbox
NTUSER\Software\Microsoft\Windows\CurrentVersion\UFH\SHC
NTUSER\Software\Dropbox\InstallPath

Four files created during installation

C:\Users\<username>\Desktop\Dropbox.lnk
C:\Users\<username>\Links\Dropbox.lnk
C:\Windows\Prefetch\DROPBOX N.N.NN.EXE-NNNNNNNN.pf
C:\Windows\Prefetch\DROPBOX.EXE-NNNNNNNN.pf

We can obtain from the registry

• Install Location

• Installed version

File Created

Executable and libraries are stored in

C:\Users\%USERNAME%\AppData\Roaming\Dropbox\bin

Uninstall

• During the uninstall process the client config folder is removed

• The registry key NTUSER\Software\Dropbox is preserved (but without values)

• The prefetch files are not deleted

• Local copy of the file is not deleted

Google Drive

Google Drive client is installed inside the Program Files folder

C:\Program Files\Google\Drive

Client configuration is stored in the user profile, so we have different profiles for each user

C:\Users\AppData\Local\Google\Drive

The default folder used for syncing files. By default, the folder is empty

C:\Users\Google Drive

Installation

During the installation different keys and values are created inside the registry

SOFTWARE\Microsoft\Windows\CurrentVersion\Installer\Folders\
SOFTWARE\Google\Drive
NTUSER\Software\Microsoft\Windows\CurrentVersion\Run\GoogleDriveSync
NTUSER\Software\Classes

From the registry we can obtain:

• Installed version

• User folder

Four files are created during client installation:

C:\Users\<username>\Desktop\Google Drive.lnk
C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Google Drive\Google Drive.lnk
C:\Windows\Prefetch\GOOGLEDRIVESYNC.EXE-NNNNNNNN.pf
C:\Windows\Prefetch\GOOGLEUPDATE.EXE-NNNNNNNN.pf

Configuration

• Configuration files are saved inside the installation folder in the user profile

Google provides a Mac OS X and Windows and desktop client.

snapshot.db

The snapshot.db is a SQLITE3 DB containing information about local and cloud entry

• Cloud_entry table

  • File name

  • Created (UNIX Timestamp)

  • Modified (UNIX Timestamp)

  • URL

  • Checksum (MD5 hash)

  • Size

  • Shared

• Local_entry

  • File name

  • Modified (UNIX Timestamp)

  • Checksum (MD5 hash)

  • Size

• After file deletion the file information is removed from the cloud_entry and the local_entry table

C:\Users\%USERNAME%\AppData\Local\Google\Drive\snapshot.db
C:\Users\%USERNAME%\AppData\Local\Google\Drive\user_default\snapshot.db

sync_config.db

The sync_config.db is a SQLITE3 DB containing profile configuration

• Client version installed

• Local Sync Root Path

• User Email

C:\Users\%USERNAME%\AppData\Local\Google\Drive\sync_config.db
C:\Users\%USERNAME%\AppData\Local\Google\Drive\user_default\sync_config.db

sync_config.log

The Sync_log.log is a log file containing information about the client sync session

• Inside the file we can find information about

• Sync sessions

• File created

• File saved

• File deleted

C:\Users\%USERNAME%\AppData\Local\Google\Drive\sync_config.log
C:\Users\%USERNAME%\AppData\Local\Google\Drive\sync_config.log.1
C:\Users\%USERNAME%\AppData\Local\Google\Drive\sync_config.log.2
C:\Users\%USERNAME%\AppData\Local\Google\Drive\user_default\sync_config.log
C:\Users\%USERNAME%\AppData\Local\Google\Drive\user_default\sync_config.log.1
C:\Users\%USERNAME%\AppData\Local\Google\Drive\user_default\sync_config.log.2

We can use a keyword search with the strings:

• RawEvent(CREATE

• RawEvent(DELETE

• RawEvent(MODIFY