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TROJ_BANLOAD.HJUK

September 02, 2014
 Analysis by: Vincent Martin Hermosura
 ALIASES:

Cryp_Opet-3_1 (Alpha_Gen), Trojan-Downloader.Win32.Banload.hhxb (Kaspersky), Trojan Horse (Symmantec), RDN/PWS-Banker!dk (Mcafee), Trojan.Win32.Generic!BT (Sunbelt), TR/Banload.TZM.69 (Antivir), Trojan.Agent.BEXM (Bitdefender), W32/Agent.AIKY!tr (Fortinet), Trojan-Downloader.Win32.Banload (Ikarus), Win32/TrojanDownloader.Banload.TZM trojan (Esset)

 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:
 INFORMATION EXPOSURE:

  • Threat Type: Trojan

  • Destructiveness: No

  • Encrypted: Yes

  • In the wild: Yes

  OVERVIEW

Infection Channel:

Downloaded from the Internet, Dropped by other malware


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.

  TECHNICAL DETAILS

File Size:

908,800 bytes

File Type:

EXE

Memory Resident:

Yes

Initial Samples Received Date:

26 Aug 2014

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.

Download Routine

This Trojan accesses the following websites to download files:

  • http://www.{BLOCKED}ne.com/images/xml/subject/ahuzijqye.zip

It saves the files it downloads using the following names:

  • %Start Menu%\Programs\Startup\ahuzijqye.zip

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

  SOLUTION

Minimum Scan Engine:

9.700

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

Note that not all files, folders, and registry keys and entries are installed on your computer during this malware's/spyware's/grayware's execution. This may be due to incomplete installation or other operating system conditions. If you do not find the same files/folders/registry information, please proceed to the next step.

Step 3

Restart in Safe Mode

[ Learn More ]

Step 4

Search and delete these files

[ Learn More ]
There may be some files that are hidden. Please make sure you check the Search Hidden Files and Folders checkbox in the "More advanced options" option to include all hidden files and folders in the search result.  
  • %Start Menu%\Programs\Startup\ahuzijqye.zip

Step 5

Restart in normal mode and scan your computer with your Trend Micro product for files detected as TROJ_BANLOAD.HJUK. 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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