Analysis by: Sabrina Lei Sioting
 PLATFORM:

Windows 2000, Windows XP, Windows Server 2003

 OVERALL RISK RATING:
 DAMAGE POTENTIAL:
 DISTRIBUTION POTENTIAL:
 REPORTED INFECTION:

  • Threat Type: Trojan

  • Destructiveness: No

  • Encrypted: No

  • In the wild: Yes

  OVERVIEW

This Trojan arrives by connecting affected removable drives to a system. It may be dropped by other malware.

  TECHNICAL DETAILS

File Size: 1,136 bytes
File Type: INF
Initial Samples Received Date: 19 Jan 2012

Arrival Details

This Trojan arrives by connecting affected removable drives to a system.

It may be dropped by other malware.

NOTES:

This is the Trend Micro detection for AUTORUN.INF files dropped by VBS_AUTORUN.

It is used by VBS_AUTORUN to automatically execute the dropped copies of VBS_AUTORUN in physical and removable drives. The said .INF file contains the following strings:

[AUTORUN]
open=wscript.exe Thumbs.vbs
icon=0
shell\install = &Install
shell\install\command = wscript.exe Thumbs.vbs
shell\uninstall = &UnInstall
shell\uninstall\command = wscript.exe Thumbs.vbs
shell\readme = &Read Me
shell\readme\command = wscript.exe Thumbs.vbs
shell\help = &Help
shell\help\command = wscript.exe Thumbs.vbs
shell\Open = &Open
shell\Open\command = wscript.exe Thumbs.vbs
shell\Open\Default=1
shell\Run = &Run
shell\Run\command = wscript.exe Thumbs.vbs
shell\Run\Default=1
shell\explore=Explorer
shell\explore\Command=Explorer.exe

  SOLUTION

Minimum Scan Engine: 9.200
FIRST VSAPI PATTERN FILE: 8.716.07
FIRST VSAPI PATTERN DATE: 19 Jan 2012
VSAPI OPR PATTERN File: 8.717.00
VSAPI OPR PATTERN Date: 19 Jan 2012

Step 1

For Windows XP and Windows Server 2003 users, before doing any scans, please make sure you disable System Restore to allow full scanning of your computer.

Step 2

Scan your computer with your Trend Micro product to delete files detected as TROJ_AUTOINF.VTG. 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.


Did this description help? Tell us how we did.