Analysis by: Cris Nowell Pantanilla

 PLATFORM:

Windows

 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

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 is a component of other malware.

It gathers certain information on the affected computer.

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

  TECHNICAL DETAILS

File Size: 81920 bytes
File Type: , DLL
Memory Resident: No
Initial Samples Received Date: 14 Nov 2014
Payload: Steals information

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 is a component of other malware.

Information Theft

This Trojan gathers the following information on the affected computer:

  • Machine GUID
  • User Name
  • Volumn Information
  • Computer Name

Other Details

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

NOTES:

This Trojan searches for the following files that have the same file name and uses any of the of these extensions:

  • .txt
  • .idx
  • .lck
  • .dat
  • {malware path}\{malware name}.{ext}

The said component file is then loaded and executed by this malware. Thus, payloads may vary depending on the component file executed by the malware.

  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

Scan your computer with your Trend Micro product to delete files detected as TROJ_SEFNIT.NWJX. 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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