Analysis by: Rika Joi Gregorio
 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:

  • In the wild: Yes

  OVERVIEW

This Trojan may be dropped by other malware.

  TECHNICAL DETAILS

File Size: 144 bytes
File Type: VBS
Initial Samples Received Date: 23 Jan 2013

Arrival Details

This Trojan may be dropped by other malware.

Other Details

This Trojan requires the following additional components to properly run:

  • unlock.exe
  • lock.rar
  • ttos.exe

NOTES:

It executes the following files:

  • lock.rar
  • ttos.exe
  • unlock.exe

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

  SOLUTION

Minimum Scan Engine: 9.700
FIRST VSAPI PATTERN FILE: 10.490.03
FIRST VSAPI PATTERN DATE: 23 Dec 2013
VSAPI OPR PATTERN File: 10.491.00
VSAPI OPR PATTERN Date: 24 Dec 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

Scan your computer with your Trend Micro product to delete files detected as VBS_AGENT.M. 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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