TROJ_OTORUN.LJ

October 09, 2012
 Analysis by: Erika Bianca Mendoza
 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 .INF file is created in removable drives to enable automatic execution of the worm once the drive is accessed. It contains certain strings.

This Trojan may be dropped by other malware.

  TECHNICAL DETAILS

File Size:

4,096 bytes

File Type:

INF

Initial Samples Received Date:

02 Nov 2011

Arrival Details

This Trojan may be dropped by the following malware:

  • WORM_PALEVO.LJ

NOTES:

This .INF file is created in removable drives to enable automatic execution of the worm once the drive is accessed. It contains the following strings:

[AutoRun]
USEAUTOPLAY=1
shellexcute=keyboard/flash.exe
Shellfiber
shell\\Explore\\command=keyboard/flash.exe
shell\Open\\command=keyboard/flash.exe
icon=keyboard/flash.exe
open=keyboard/flash.exe
action=0pen folder to view files using Windows Explorer

  SOLUTION

Minimum Scan Engine:

9.200

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 the malware/grayware file that dropped/downloaded TROJ_OTORUN.LJ

Step 3

Scan your computer with your Trend Micro product to delete files detected as TROJ_OTORUN.LJ. 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.

NOTES:

RECOMMENDATIONS

This malware is detected and removed by the latest Trend Micro anti-malware engine and pattern. Always keep pattern files and engines up-to-date. To know more about updating your Trend Micro product's pattern, please refer to the following Trend Micro support page:


Note: The steps apply for specific products indicated in the page.

To actively detect and protect your machine, enable real-time scanning of your Trend Micro anti-malware product. Refer to the following Trend Micro support page to know more about enabling real-time scanning in your Trend Micro product:

To enable Firewall to protect against threats: How do I enable or disable the Personal Firewall of Trend Micro Internet Security?

  • Be aware of social engineering attacks.
  • Disable AutoPlay to avoid automatic execution of executable files in removable/network drives.
  • Disconnect drives when not needed. If write access is not required, enable read-only mode only.


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