TROJ64_ALUREON.WXB

May 28, 2014
 Analysis by: Mark Joseph Manahan
 ALIASES:

Trojan:Win32/Alureon.GQ (Microsoft) ,Win64/Wowlik.F trojan (Eset)

 PLATFORM:

Windows XP (64-bit), Windows Vista (64-bit), Windows 7 (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:

Dropped by other malware

This Trojan may be dropped by other malware.

It connects to certain websites to send and receive information.

  TECHNICAL DETAILS

File Size:

24,064 bytes

File Type:

EXE

Memory Resident:

Yes

Initial Samples Received Date:

26 May 2014

Payload:

Connects to URLs/IPs

Arrival Details

This Trojan may be dropped by other malware.

Installation

This Trojan drops the following files:

  • %Application Data%\{random folder name 1}\{random folder name 2}\wow.ini

(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 drops the following copies of itself into the affected system:

  • %User Temp%\{random folder name 1}\{random folder name 2}\wow.dll - hidden

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

It creates the following folders:

  • %Application Data%\{random folder name 1}\{random folder name 2}
  • %Application Data%\{random folder name 1}

(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.)

Information Theft

This Trojan gathers the following data:

  • Operating System
  • Host CLSID

Other Details

This Trojan connects to the following website to send and receive information:

  • {Domain}:{Port} found in %Application Data%\{random folder name 1}\{random folder name 2}\wow.ini

(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.)

NOTES:

It can perform various web activities to the infected machine, such as click Fraud and proxy service.

  SOLUTION

Minimum Scan Engine:

9.700

FIRST VSAPI PATTERN FILE:

10.820.07

FIRST VSAPI PATTERN DATE:

26 May 2014

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

Restart in Safe Mode

[ Learn More ]

Step 3

Search and delete these folders

[ 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 folder name 1}

Step 4

Restart in normal mode and scan your computer with your Trend Micro product for files detected as TROJ64_ALUREON.WXB. 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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