Threat Encyclopedia

TROJ_BANLOD.QSPN

Publish date: October 09, 2012

ANALYSIS BY

Roland Marco Dela Paz


ALIASES:

Trojan-Downloader.Win32.Banload.bmfb (Kaspersky)

PLATFORM:

Windows 2000, Windows XP, Windows Server 2003

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

  • Threat Type:Trojan

  • Destructiveness:No

  • Encrypted: Yes

  • In the wild: Yes

OVERVIEW


This Trojan connects to an adult site.

This Trojan arrives as attachment to mass-mailed email messages.

It executes the downloaded files. As a result, malicious routines of the downloaded files are exhibited on the affected system.

TECHNICAL DETAILS

File Size:

315,904 bytes

File Type:

EXE

Memory Resident:

Yes

Initial Samples Received Date:

19 Jul 2011

Arrival Details

This Trojan arrives as attachment to mass-mailed email messages.

Installation

This Trojan creates the following folders:

  • c:\hf_mig\

It displays the following fake error messages:


Download Routine

This Trojan accesses the following websites to download files:

  • http://www.{BLOCKED}c.idrett.no/////mazda.exe - detected as TSPY_BANCOS.QSPN

It saves the files it downloads using the following names:

  • c:\hf_mig\winv.exe

It then executes the downloaded files. As a result, malicious routines of the downloaded files are exhibited on the affected system.

NOTES:

It then connects to the following adult site:

  • http://www.{BLOCKED}os.com/

It does the abovementioned routine in order to hide its malicious routine from the user.

SOLUTION

Minimum Scan Engine:

8.900

FIRST VSAPI PATTERN FILE:

8.300.08

FIRST VSAPI PATTERN DATE:

20 Jul 2011

VSAPI OPR PATTERN File:

8.301.00

VSAPI OPR PATTERN Date:

20 Jul 2011

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

Remove malware files dropped/downloaded by TROJ_BANLOD.QSPN

Step 3

Identify and terminate files detected as TROJ_BANLOD.QSPN

[ Learn More ]
  1. 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.
  2. If the detected file is not displayed in either Windows Task Manager or Process Explorer, continue doing the next steps.

Step 4

Search and delete this folder

[ Learn More ]
Please make sure you check the Search Hidden Files and Folders checkbox in the More advanced options option to include all hidden folders in the search result.
  • c:\hf_mig\

Step 5

Scan your computer with your Trend Micro product to delete files detected as TROJ_BANLOD.QSPN. 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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