TSPY_BANCOS.ZZA
Windows 2000, XP, Server 2003
Threat Type: Spyware
Destructiveness: No
Encrypted:
In the wild: Yes
OVERVIEW
This spyware attempts to steal information, such as user names and passwords, used when logging into certain banking or finance-related websites.
TECHNICAL DETAILS
3,994,112 bytes
PE
Yes
17 Sep 2010
Installation
This spyware drops the following copies of itself into the affected system:
- %System%\avg.exe
(Note: %System% is the Windows system folder, which is usually C:\Windows\System on Windows 98 and ME, C:\WINNT\System32 on Windows NT and 2000, or C:\Windows\System32 on Windows XP and Server 2003.)
It drops the following files:
- %System%\rgr.sys - detected by Trend Micro as TROJ_BANKER.LRF
(Note: %System% is the Windows system folder, which is usually C:\Windows\System on Windows 98 and ME, C:\WINNT\System32 on Windows NT and 2000, or C:\Windows\System32 on Windows XP and Server 2003.)
Autostart Technique
This spyware adds the following registry entries to enable its automatic execution at every system startup:
HKEY_LOCAL_MACHINE
@ = %System%\\avg.exe
Information Theft
This spyware monitors the Internet Explorer (IE) activities of the affected system, specifically the address bar. It recreates a legitimate website with a spoofed login page if a user visits banking sites with the following strings in the address bar and/or title bar:
- Banco Bradesco S/A
- Banco Do Bradesco
- Banco Santander
- Banespa
- Banrisul
- Bradesco Corporate
- Bradesco Empresas
- Bradesco Prime
- Bradeso Net Empresa
- Itau iToken
- Portal Internet Banrisul
- Santander Banespa
- Unibanco
- http://bradesconetempresa.com.br
- http://www.banrisul.com.br
- http://www.cellcard.com.br
- http://www.corporatebradesco.com.br/
- http://www.itau.com
- http://www.itau.com.br/index.htm
- http://www.quidam.com.br/content/home/
- http://www.serasa.com.br
- http://www.unibanco.com.br
- http://www2.americanexpress.com.br
- https://home.americanexpress.com
- https://inst.itaucard.com.br
- https://internetbanking.caixa.gov.br
- https://internetbanking.caixa.gov.br/siwinstatic/htm/saibaMaisCadMaq/saibaMaisCompleto.htm
- https://www.americanexpress.com
- https://www.credicard.com.br
- https://www.paypal.com/br
It attempts to steal information from the following banks and/or other financial institutions:
- American Express
- Banco Banespa
- Banco Bradesco
- Banco Caixa
- Banco Itau
- Banco Santander
- Banco Seresa
- Banco do Bradesco
- Banrisul
- Cellcard
- Paypal
- Quidam
- Unibanco
Stolen Information
This spyware sends the gathered information via HTTP POST to the following URL:
- http://www.{BLOCKED}x.com.br/uploads/galeria.php
Variant Information
This spyware has the following MD5 hashes:
- 84bfab5f4253c2f362e7ca9d5b1b1e6c
It has the following SHA1 hashes:
- 22d6639db87ccd7d83a963422cce1d63c446513c
SOLUTION
8.900
Step 1
For Windows XP and Windows Server 2003 users, before doing any scans, please make sure you disable System Restore to allow full scanning of your computer.
Step 2
Terminate a malware/grayware process
*Note: If the detected process is not displayed in theWindows Task Manager, continue doing the next steps.
- %System%\avg.exe
Step 3
Delete this registry value
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
- @ = %System%\avg.exe
- @ = %System%\avg.exe
Step 4
Search and delete this file
- %System%\rgr.sys
Step 5
Scan your computer with your Trend Micro product to delete files detected as TSPY_BANCOS.ZZA. 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.
Did this description help? Tell us how we did.