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TROJ_BANLOAD.HQE

April 29, 2013
 Analysis by: Anthony Joe Melgarejo
 ALIASES:

RDN/PWS-Banker!bn (McAfee), Troj/Banloa-NU (Sophos), TR/Banload.AT.2 (Antivir), W32/Banload.RZY!tr.dldr (Fortinet), Win32/TrojanDownloader.Banload.RZY trojan (ESET),

 PLATFORM:

Windows 2000, Windows XP (32-bit and 64-bit), Windows Server 2003, Windows Vista (32-bit and 64-bit), Windows 7 (32-bit and 64-bit)

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

  • Threat Type: Trojan

  • Destructiveness: No

  • Encrypted: Yes

  • In the wild: Yes

  OVERVIEW

Infection Channel:

Dropped by other malware, Downloaded from the Internet


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

  TECHNICAL DETAILS

File Size:

731,136 bytes

File Type:

EXE

Memory Resident:

No

Initial Samples Received Date:

18 Apr 2013

Payload:

Downloads files

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.

Installation

This Trojan drops the following files:

  • %Application Data%\Temp\{random file name 1}.exe
  • %Application Data%\{Random GUID}\{random file name 2}.exe

(Note: %Application Data% is the current user's Application Data folder, which is usually C:\Documents and Settings\{user name}\Application Data on Windows 2000, XP, and Server 2003, or C:\Users\{user name}\AppData\Roaming on Windows Vista and 7.)

It creates the following folders with attributes set to System and Hidden to prevent users from discovering and removing its components:

  • %Application Data%\{Random GUID}
  • %Application Data%\Temp

(Note: %Application Data% is the current user's Application Data folder, which is usually C:\Documents and Settings\{user name}\Application Data on Windows 2000, XP, and Server 2003, or C:\Users\{user name}\AppData\Roaming on Windows Vista and 7.)

Download Routine

This Trojan connects to the following website(s) to download and execute a malicious file:

  • http://{BLOCKED}.{BLOCKED}.171.151/Dgpc/Vitrola.png
  • http://{BLOCKED}.{BLOCKED}.171.151/Dgpc/loiras.png

Trend Micro detects the dowloaded file as:

  • TSPY_BANKER.HQE

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

NOTES:

It will not perform its main routine if the following strings in processes, files or registry entries are found in the affected system:

  • QEMU
  • SANDBOX
  • VMWare.exe
  • sbiedll.dll
  • dbghlp.dll

  SOLUTION

Minimum Scan Engine:

9.300

FIRST VSAPI PATTERN FILE:

9.866.04

FIRST VSAPI PATTERN DATE:

18 Apr 2013

VSAPI OPR PATTERN File:

9.867.00

VSAPI OPR PATTERN Date:

19 Apr 2013

Step 1

Before doing any scans, Windows XP, Windows Vista, and Windows 7 users must disable System Restore to allow full scanning of their computers.

Step 2

Identify and terminate files detected as TROJ_BANLOAD.HQE

[ Learn More ]
  1. Windows Task Manager may not display all running processes. In this case, please use a third-party process viewer, preferably Process Explorer, to terminate the malware/grayware/spyware file. You may download the said tool here.
  2. 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.
  3. If the detected file is not displayed in either Windows Task Manager or Process Explorer, continue doing the next steps.

Step 3

Remove the malware/grayware file dropped/downloaded by TROJ_BANLOAD.HQE

    • TSPY_BANKER.HQE

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.
  • %Application Data%\{Random GUID}
  • %Application Data%\Temp

Step 5

Scan your computer with your Trend Micro product to delete files detected as TROJ_BANLOAD.HQE. 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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