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TROJ_OTORUN.LB

October 09, 2012
 Analysis by: rolandde
 ALIASES:

Worm.Win32.FFAuto.coh (Kaspersky)

 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 is an AUTORUN.INF file that is dropped to removable drives as an autostart component. Once an affected drive is opened, this .INF file executes main malware. As a result, malicious routines of the main malware are exhibited on the affected system.

This Trojan may be dropped by other malware.

  TECHNICAL DETAILS

File Size:

263 bytes

File Type:

INF

Initial Samples Received Date:

02 Nov 2011

Arrival Details

This Trojan may be dropped by the following malware:

  • WORM_PALEVO.LB

NOTES:

It is an AUTORUN.INF file that is dropped to removable drives as an autostart component. Once an affected drive is opened, this .INF file executes the following main malware:

  • [DRIVE]:\mesage\goingoff.exe - detected as WORM_PALEVO.LB

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

  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 malware files dropped/downloaded by TROJ_OTORUN.LB

Step 3

Scan your computer with your Trend Micro product to delete files detected as TROJ_OTORUN.LB. 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.
  • Avoid accessing the listed malicious URLs to prevent possible re-infection.
  • Monitor network connections for any suspicious connection or connectivity.
  • Regularly update list of untrusted websites.
  • Avoid opening email attachments and clicking links in an email from unknown sources.
  • Implement an email policy of archiving attachments with a password.
  • Block any file with more than one file type extension.
  • Disable AutoPlay to avoid automatic execution of executable files in removable drives.
  • Disconnect drives when not needed. If write access is not required, enable read-only mode only.
  • Configure your system to show hidden files and folders and display file extensions.


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