TSPY_BANCOS.CVH

December 26, 2013
 Analysis by: Mark Joseph Manahan
 ALIASES:

Trojan.Banker.27905 (VBA), TR/Spy.Banker.Gen (Antivir)

 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:
 DAMAGE POTENTIAL:
 DISTRIBUTION POTENTIAL:
 REPORTED INFECTION:
 INFORMATION EXPOSURE:

  • Threat Type: Spyware

  • Destructiveness: No

  • Encrypted: No

  • In the wild: Yes

  OVERVIEW

Infection Channel:

Dropped by other malware

This spyware may be dropped by other malware.

It gathers target email addresses from cached email, address books, and mailboxes.

It gathers certain information on the affected computer. It monitors user transactions on certain sites. It logs a user's keystrokes to steal information.

  TECHNICAL DETAILS

File Size:

922,112 bytes

File Type:

EXE

Memory Resident:

No

Initial Samples Received Date:

10 Dec 2013

Payload:

Steals information, Logs keystrokes, Collects system information

Arrival Details

This spyware may be dropped by the following malware:

Installation

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

  • %Application Data%\xlaborsav.exe

(Note: %Application Data% is the current user's Application Data folder, which is usually C:\Documents and Settings\{user name}\Application Data on Windows 2000, XP, and Server 2003, or C:\Users\{user name}\AppData\Roaming on Windows Vista and 7.)

Autostart Technique

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

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Run
xlaborsav.exe = "%Application Data%\xlaborsav.exe"

Propagation

This spyware gathers target email addresses from cached email, address books, and mailboxes.

Dropping Routine

This spyware drops the following file(s), into which it saves gathered information:

  • %System%\syslog.123
  • %System%\barack.txt

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

Information Theft

This spyware gathers the following information on the affected computer:

  • Mac Address
  • Computer Name
  • OS version
  • Disk Information
  • Bios Information
  • Network Information
  • E-mail Accounts

It monitors user transactions done on the following websites:

  • Google
  • Orkut
  • Youtube
  • Blooger
  • Facebook
  • PagSeguro
  • Paypal
  • Terra
  • Grvnewlook
  • Serasa Experian
  • Hotmail
  • Locaweb

It logs a user's keystrokes to steal information.

Stolen Information

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

  • http://{BLOCKED}va.com.br/media/coletaradiotx02.php

  SOLUTION

Minimum Scan Engine:

9.700

FIRST VSAPI PATTERN FILE:

10.470.02

FIRST VSAPI PATTERN DATE:

13 Dec 2013

VSAPI OPR PATTERN File:

10.471.00

VSAPI OPR PATTERN Date:

14 Dec 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

Remove the malware/grayware file dropped/downloaded by TSPY_BANCOS.CVH

Step 3

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_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run
    • xlaborsav.exe = "%Application Data%\xlaborsav.exe"

Step 4

Search and delete these files

[ Learn More ]
There may be some files that are hidden. Please make sure you check the Search Hidden Files and Folders checkbox in the "More advanced options" option to include all hidden files and folders in the search result.
  • %System%\syslog.123
  • %System%\barack.txt

Step 5

Scan your computer with your Trend Micro product to delete files detected as TSPY_BANCOS.CVH 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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