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:

  • In the wild: Yes

  OVERVIEW

This Trojan arrives as a component bundled with malware/grayware packages.

  TECHNICAL DETAILS

File Size: 97 bytes
File Type: INF
Memory Resident: No
Initial Samples Received Date: 05 Jun 2008

Arrival Details

This Trojan arrives as a component bundled with malware/grayware packages.

Propagation

The said .INF file contains the following strings:

[AutoRun]
open=service.exe
shellexecute=service.exe
shell\´ò¿ª\command=service.exe
shell=´ò¿ª

NOTES:
This is Trend Micro's detection for malicious AUTORUN.INF files, which are used by another malware to automatically execute its component upon accessing an infected drive. It attempts to execute a file named, service.exe.

  SOLUTION

Minimum Scan Engine: 9.200
FIRST VSAPI PATTERN FILE: 5.320.02
FIRST VSAPI PATTERN DATE: 05 Jun 2008
VSAPI OPR PATTERN File: 8.807.00
VSAPI OPR PATTERN Date: 29 Feb 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

Search and delete AUTORUN.INF files created by TROJ_AUTORUN.C that contain these strings

[ Learn More ]
[AutoRun]
open=service.exe
shellexecute=service.exe
shell\´ò¿ª\command=service.exe
shell=´ò¿ª

Step 3

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