TROJ_BANKER.NTM
Windows 2000, XP, Server 2003
Threat Type: Trojan
Destructiveness: No
Encrypted: No
In the wild: Yes
OVERVIEW
This Trojan arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.
It attempts to steal sensitive online banking information, such as user names and passwords. This routine risks the exposure of the user's account information, which may then lead to the unauthorized use of the stolen data. It attempts to steal information, such as user names and passwords, used when logging into certain banking or finance-related websites.
TECHNICAL DETAILS
988,672 bytes
EXE
Yes
23 Sep 2010
Arrival Details
This Trojan arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.
Autostart Technique
This Trojan adds the following registry entries to enable its automatic execution at every system startup:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Run
ctfmon = {malware path and filename}
Information Theft
This Trojan monitors the Internet Explorer (IE) activities of the affected system, specifically the address bar or title 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 or title bar:
- BANCO REAL - Windows Internet Explorer
- Banco Ita
- INTERNETBANKINGCAIXAWIN
- bradesco.com.br
- itau.com.br
- santander.com.br
The spoofed login overlaps the legitimate login area of the website, thus tricking the user into thinking that it is part of the IE window. The spoofed login page is located in a fixed area of the legitimate website. The said routine tricks the user into giving out sensitive account-related information. It then logs keystrokes entered by the user in the user name and password fields of the spoofed login page.
It attempts to steal sensitive online banking information, such as user names and passwords. This routine risks the exposure of the user's account information, which may then lead to the unauthorized use of the stolen data.
It attempts to steal information from the following banks and/or other financial institutions:
- Banco Itau
- Banco Real
- Banco Santander
- Bradesco
- Caixa
Stolen Information
This Trojan sends the gathered information via HTTP POST to the following URL:
- www.{BLOCKED}otas.com.br/contador.php?p=25420
Variant Information
This Trojan has the following MD5 hashes:
- 0bc044d9ad56e0d3bc6d77e0caf37f39
It has the following SHA1 hashes:
- 2867d410b0981f4d7ee5b1ed45e8ff7c7116d9db
SOLUTION
8.900
7.484.01
23 Sep 2010
9/23/2010 12:00:00 AM
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
Identify and terminate files detected as TROJ_BANKER.NTM
- 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.
- 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 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
- ctfmon={malware path and filename}
- ctfmon={malware path and filename}
Step 4
Scan your computer with your Trend Micro product to delete files detected as TROJ_BANKER.NTM. 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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