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TSPY_DELPBANK.EB

May 24, 2013
 Analysis by: Mark Joseph Manahan
 ALIASES:

PWS-Banker.gen.b (McAfee), Trojan-Banker.Win32.Banker (Ikarus)

 PLATFORM:

Windows 2000, Windows Server 2003, Windows XP (32-bit, 64-bit), Windows Vista (32-bit, 64-bit), Windows 7 (32-bit, 64-bit)

 OVERALL RISK RATING:
 REPORTED INFECTION:
 SYSTEM IMPACT RATING:
 INFORMATION EXPOSURE:

  • Threat Type: Spyware

  • Destructiveness: No

  • Encrypted: No

  • In the wild: Yes

  OVERVIEW

Infection Channel:

Spammed via email


Spammers take advantage of the news regarding the supposedly merging of Skype, Hotmail, and MSN to lure users into downloading this malware. The spammed message includes a URL that points to this malware posing as an authorized certificate.

To get a one-glance comprehensive view of the behavior of this Spyware, refer to the Threat Diagram shown below.

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

It connects to certain websites to send and receive information.

  TECHNICAL DETAILS

File Size:

1,312,768 bytes

File Type:

EXE

Memory Resident:

Yes

Initial Samples Received Date:

23 May 2013

Payload:

Displays graphics/image, Connects to URLs/IPs

Arrival Details

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

Installation

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

  • %System%\java.exe

(Note: %System% is the Windows system folder, which is usually C:\Windows\System32.)

Autostart Technique

This spyware adds the following registry entries to enable its automatic execution at every system startup:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Run
java.exe = "%System%\java.exe"

Other System Modifications

This spyware adds the following registry keys:

HKEY_CURRENT_USER\full

Information Theft

This spyware gathers the following data:

  • Mouse Activities
  • Keyboard Activities
  • Desktop Screenshot
  • System Information

Other Details

This spyware connects to the following website to send and receive information:

  • {BLOCKED}to.no-ip.biz:6651

It displays the following images:

NOTES:

This spyware monitors browser activities of the affected system, specifically the address bar or title bar, for the text bb.com.br. When it finds the said text in the browser address bar or title bar, it then creates a popup window to install Gbplugin.

When the Instalar Plugin is clicked, it displays a message box to trick users into thinking that it is successfully installed.

It then requests to update user credentials using the following pop-up window:

Upon clicking the button autalizar, it sends the credentials to the following email address:

  • {BLOCKED}n.coisas@gmail.com

It uses the following email login credentials:

  • Account: {BLOCKED}b03@terra.com.br
  • Password: nusa01

  SOLUTION

Minimum Scan Engine:

9.300

FIRST VSAPI PATTERN FILE:

9.936.08

FIRST VSAPI PATTERN DATE:

23 May 2013

VSAPI OPR PATTERN File:

9.937.00

VSAPI OPR PATTERN Date:

24 May 2013

Step 1

Before doing any scans, Windows XP, Windows Vista, and Windows 7 users must disable System Restore to allow full scanning of their computers.

Step 2

Identify and terminate files detected as TSPY_DELPBANK.EB

[ Learn More ]
  1. Windows Task Manager may not display all running processes. In this case, please use a third-party process viewer, preferably Process Explorer, to terminate the malware/grayware/spyware file. You may download the said tool here.
  2. If the detected file is displayed in either Windows Task Manager or Process Explorer but you cannot delete it, restart your computer in safe mode. To do this, refer to this link for the complete steps.
  3. If the detected file is not displayed in either Windows Task Manager or Process Explorer, continue doing the next steps.

Step 3

Delete this registry key

[ Learn More ]

Important: Editing the Windows Registry incorrectly can lead to irreversible system malfunction. Please do this step only if you know how or you can ask assistance from your system administrator. Else, check this Microsoft article first before modifying your computer's registry.

  • In HKEY_CURRENT_USER
    • full

Step 4

Delete this registry value

[ Learn More ]

Important: Editing the Windows Registry incorrectly can lead to irreversible system malfunction. Please do this step only if you know how or you can ask assistance from your system administrator. Else, check this Microsoft article first before modifying your computer's registry.

 
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
    • java.exe = "%System%\java.exe"

Step 5

Scan your computer with your Trend Micro product to delete files detected as TSPY_DELPBANK.EB. If the detected files have already been cleaned, deleted, or quarantined by your Trend Micro product, no further step is required. You may opt to simply delete the quarantined files. Please check this Knowledge Base page for more information.


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