TSPY_BANKER.YWNRI

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

As of this writing, the said sites are inaccessible.

It gathers certain information on the affected computer.

It connects to certain websites to send and receive information.

Arrival Details

This spyware 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 files:

• %Application Data%\{DD-MM-YYYY}\{random filename}.bat

(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 URL(s) to download its component file(s):

• http://wwr.{BLOCKED}iume.info/terca19/hwrcomp.html
• http://wwr.{BLOCKED}iume.info/terca19/Hkcmds.html

It saves the files it downloads using the following names:

• %Application Data%\{DD-MM-YYYY}\hwrcomp.sys
• %Application Data%\{DD-MM-YYYY}\Hkcmds.exe

(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.)

As of this writing, the said sites are inaccessible.

Information Theft

This spyware gathers the following information on the affected computer:

• Computer Name
• Installed GBPlugins
• Installed Antivirus
• Get UUID
• Malware Version

Other Details

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

• http://www.{BLOCKED}ra.info/Contador12/write/?query={encrypted gathered data}

It does the following:

• It checks for the presence of the following files and folders which are related to banking programs:
  • %Program Files%\Scpad
  • %Program Files%\GbPlugin
  • %Program Files%\GbPlugin\gbiehtec.dll
  • %Program Files%\GbPlugin\gbiehbmb.dll
  • %Program Files%\GbPlugin\gbiehamz.dll
  • %Program Files%\GbPlugin\gbiehbnt.dll
  • %Program Files%\GbPlugin\gbiehbnb.dll
  • %Program Files%\GbPlugin\gbiehisg.dll
  • %Program Files%\GbPlugin\gbiehscd.dll
  • %Program Files%\GbPlugin\gbiehuni.dll
  • %Program Files%\GbPlugin\gbiehcef.dll
  • %Program Files%\GbPlugin\gbiehabn.dll
  • %Program Files%\GbPlugin\gbieh.dll
• After checking the installed banking program, it identifies which of the following banks the user uses:
  • Banco do Brasil
  • Banco Santander
  • CEF
  • Itau
  • Sicredi
  • Infoseg
  • Banco do Nordeste
  • Banestes
  • Banco da Amazonia
  • Mercantil Banco
  • UniCredit
  • Banco Bradesco

(Note: %Program Files% is the Program Files folder, where it usually is C:\Program Files on all Windows operating system versions; C:\Program Files (x86) for 32-bit applications running on Windows 64-bit operating systems.)