Analysis by: Anthony Joe Melgarejo
ALIASES:

RDN/PWS-Banker!w (McAfee), BDS/Backdoor.Gen5 (Antivir), W32/Banload.AL.gen!Eldorado (F-Prot), W32/Banload.RYH!tr (Fortinet), Trojan.Win32.ChePro (Ikarus), a variant of Win32/TrojanDownloader.Banload.RYH trojan (ESET), Trojan.Banker.9307 (VBA32)

 PLATFORM:

Windows 2000, Windows Server 2003, Windows XP (32-bit, 64-bit), Windows Vista (32-bit, 64-bit), Windows 7 (32-bit, 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: Downloaded from the Internet, Dropped by other malware

This Trojan may arrive bundled with malware packages as a malware component. It arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

As of this writing, the said sites are inaccessible.

It requires its main component to successfully perform its intended routine.

  TECHNICAL DETAILS

File Size: Varies
File Type: DLL, Other
File Compression: UPX
Memory Resident: No
Initial Samples Received Date: 18 Apr 2013
Payload: Steals information, Connects to URLs/IPs, Downloads files

Arrival Details

This Trojan may arrive bundled with malware packages as a malware component.

It arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

Download Routine

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

  • http://{BLOCKED}dur.com.br/imagens/fontes/User/{random 4-digit number}/new.jpg

As of this writing, the said sites are inaccessible.

Other Details

This Trojan requires its main component to successfully perform its intended routine.

NOTES:

It tries to steal banking information by searching for the cookies in the affected system.

It exports functions which handles WM_ messages that will be used for information stealing routine.

  SOLUTION

Minimum Scan Engine: 9.300
FIRST VSAPI PATTERN FILE: 9.864.05
FIRST VSAPI PATTERN DATE: 18 Apr 2013
VSAPI OPR PATTERN File: 9.865.00
VSAPI OPR PATTERN Date: 18 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.SM1

[ 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

Scan your computer with your Trend Micro product to delete files detected as TROJ_BANLOAD.SM1. 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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