Modified by: Michael Cabel
 PLATFORM:

Windows 2000, XP, Server 2003

 OVERALL RISK RATING:
 DAMAGE POTENTIAL:
 DISTRIBUTION POTENTIAL:
 REPORTED INFECTION:

  • Threat Type: Trojan

  • Destructiveness: No

  • Encrypted: No

  • In the wild: Yes

  OVERVIEW

This Trojan may be downloaded by other malware/grayware/spyware from remote sites. It may be unknowingly downloaded by a user while visiting malicious websites.

  TECHNICAL DETAILS

File Size: Varies
File Type: PE
Memory Resident: Yes
Initial Samples Received Date: 04 Jul 2009
Payload: Downloads files

Arrival Details

This Trojan may be downloaded by other malware/grayware/spyware from remote sites.

It may be unknowingly downloaded by a user while visiting malicious websites.

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
Chave_Msn = {Malware Path and File Name}

Other Details

Based on analysis of the codes, it has the following capabilities:

  • It sends out spam messages using hotmail that contains a link pointing to the possibly malicious Web site http://{BLOCKED}se/cu2j. However, the said web site is already inactive as of this writing.
  • It connects to http://{BLOCKED}acoes063.kit.net/configautomsn.txt to download its configuration file used for spamming:
  • The said configuration file also contains the URLs http://www.{BLOCKED}es063.kit.net/msghot.txt (contains the email message used for spamming) and http://{BLOCKED}acoes063.kit.net/autentic.txt - contains user names and passwords
  • The said user name and password is used to login to hotmail. It uses hotmail to send out spam messages.

  SOLUTION

Minimum Scan Engine: 8.900
VSAPI OPR PATTERN File: 06.244.06
VSAPI OPR PATTERN Date: 04 Jul 2010

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 process file/s detected as TROJ_BANKER.NPV

[ Learn More ]

*Note: If the detected file/s is/are not displayed in theWindows Task Manager, continue doing the next steps.

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_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
    • Chave_Msn = {Malware Path and File Name}

Step 4

Scan your computer with your Trend Micro product to delete files detected as TROJ_BANKER.NPV. 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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