Analysis by: Michael Cabel
 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 may be dropped by other malware.

  TECHNICAL DETAILS

File Size: 59 bytes
File Type: INF
Initial Samples Received Date: 26 Oct 2011

Arrival Details

This Trojan may be dropped by the following malware:

  • WORM_GAMETHI.GGN

Propagation

The said .INF file contains the following strings:

[AutoRun]
open=puia6h.exe
shell\open\Command=puia6h.exe

NOTES:
This is Trend Micro detection for .INF files dropped by its main component malware to physical and/or removable drives to enable its automatic execution when the said drives are accessed.

  SOLUTION

Minimum Scan Engine: 9.200
FIRST VSAPI PATTERN FILE: 8.556.02
FIRST VSAPI PATTERN DATE: 07 Nov 2011
VSAPI OPR PATTERN File: 8.557.00
VSAPI OPR PATTERN Date: 08 Nov 2011

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

Remove malware files dropped/downloaded by TROJ_AUTORUN.MBC

Step 3

Scan your computer with your Trend Micro product to delete files detected as TROJ_AUTORUN.MBC. 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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