TSPY_BEBLOH.AAACT

This spyware arrives as an attachment to email messages spammed by other malware/grayware or malicious users. It arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

It does not have any propagation routine.

It does not have any backdoor routine.

It modifies the Internet Explorer Zone Settings.

It executes the downloaded files. As a result, malicious routines of the downloaded files are exhibited on the affected system.

It connects to certain websites to send and receive information. It gathers information and reports it to its servers.

Arrival Details

This spyware arrives as an attachment to email messages spammed by other malware/grayware or malicious users.

It arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

Installation

This spyware drops the following copies of itself into the affected system:

• %Application Data%\{random string}.exe
  (Note: Creation of this copy is triggered when the affected system is shutting down)

(Note: %Application Data% is the Application Data folder, where it usually is C:\Documents and Settings\{user name}\Application Data on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\AppData\Roaming on Windows Vista (32- and 64-bit), Windows 7 (32- and 64-bit), Windows 8 (32- and 64-bit), Windows 8.1 (32- and 64-bit), Windows Server 2008, and Windows Server 2012.)

It adds the following mutexes to ensure that only one of its copies runs at any one time:

• Global\Uz{hex values}

It injects codes into the following process(es):

• explorer.exe

Autostart Technique

This spyware creates the following registry entries to enable automatic execution of dropped component at every system startup:

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Run
{random string} = "%Application Data%\{random string}.lnk”
(Note: Creation of this registry entry is triggered when the affected system is shutting down)

Other System Modifications

This spyware adds the following registry keys:

HKEY_CURRENT_USER\Software\{random key}

It adds the following registry entries:

HKEY_CURRENT_USER\Software\{random key}
{random value} = "{hex values}"

HKEY_CURRENT_USER\Software\{random key}
(Default) = "{hex values}"

Propagation

This spyware does not have any propagation routine.

Backdoor Routine

This spyware does not have any backdoor routine.

Web Browser Home Page and Search Page Modification

This spyware modifies the Internet Explorer Zone Settings.

Dropping Routine

This spyware drops the following files:

• %Application Data%\{random string}.lnk <- points to the copy
  (Note: Creation of this file is triggered when the affected system is shutting down, appends parameter "-autorun" to executed copy)

(Note: %Application Data% is the Application Data folder, where it usually is C:\Documents and Settings\{user name}\Application Data on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\AppData\Roaming on Windows Vista (32- and 64-bit), Windows 7 (32- and 64-bit), Windows 8 (32- and 64-bit), Windows 8.1 (32- and 64-bit), Windows Server 2008, and Windows Server 2012.)

Download Routine

This spyware connects to the following website(s) to download and execute a malicious file:

• http://{BLOCKED}eischoedl.de/html/runtime_os.exe
• http://{BLOCKED}eischoedl.de/html/specials.exe

It saves the files it downloads using the following names:

• %User Temp%\runtime_os.exe
• %User Temp%\specials.exe

(Note: %User Temp% is the user's temporary folder, where it usually is C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\AppData\Local\Temp on Windows Vista (32- and 64-bit), Windows 7 (32- and 64-bit), Windows 8 (32- and 64-bit), Windows 8.1 (32- and 64-bit), Windows Server 2008, and Windows Server 2012.)

Trend Micro detects the dowloaded file as:

• Variant of TSPY_URSNIF
• Variant of BKDR_PUSHDO

It then executes the downloaded files. As a result, malicious routines of the downloaded files are exhibited on the affected system.

Stolen Information

This spyware sends the gathered information via HTTP POST to the following URL:

• https://{BLOCKED}c1.com/auth/?tver={value}&vcmd={value}&cc={value}&hh={hex value}&ipcnf={ip address}+&sckport={value}&pros={value}&prgid={value}&keret={value};&email=

Other Details

This spyware connects to the following URL(s) to check for an Internet connection:

• www.google.com

It connects to the following website to send and receive information:

• {Random Generated Domain}.com
• {Random Generated Domain}.net
• https://{BLOCKED}pc1.com/auth/

It does the following:

• Update itself
• It does not proceed to its malicious routine if it detects that it is running in a VMWare environment
• It deletes the cache files of Google Chrome and Mozilla Firefox
• It monitors the following files to steal sensitive information, such as user names and passwords:
  • iexplore.exe
  • explorer.exe
  • myie.exe
  • firefox.exe
  • ftpte.exe
  • coreftp.exe
  • filezilla.exe
  • TOTALCMD.EXE
  • cftp.exe
  • FTPVoyager.exe
  • SmartFTP.exe
  • WinSCP.exe
  • chrome.exe
  • opera.exe
  • chrome.dll
  • thebat.exe
  • msimn.exe
  • nsp4.dll
  • nss3.dll
  • Outlook.exe
  
• This malware monitors websites of banks and/or financial institutions based on its configuration file received from the C&C server.

It gathers the following information and reports it to its servers:

• Email addresses from Windows Address Book (WAB)
• User Credentials (FTP, Browser, Email)
• Machine Name
• OS Information (Version, Product ID, Name, Install Date)
• Explorer File Information
• Volume Serial Number
• Network Configuration (IP address, Socket, Ports)
• Keyboard Layout

NOTES:

The download URL and downloaded file may change based on the response from the C&C communication.

It does not have rootkit capabilities.

It does not exploit any vulnerability.