TROJ_OTORUN.VN

October 09, 2012

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 Analysis by: rolandde

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 ALIASES:

Worm:Win32/Rimecud!inf (Microsoft); Mal/AutoInf-A (Sophos)

 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 an AUTORUN.INF component that is used by its main malware as an autostart technique. It executes a certain file. As a result, malicious routines of executed file are exhibited on the system.

This Trojan may be dropped by other malware.

  TECHNICAL DETAILS

File Size:

718 bytes

File Type:

INF

Memory Resident:

No

Initial Samples Received Date:

12 Oct 2011

Arrival Details

This Trojan may be dropped by other malware.

NOTES:

It is an AUTORUN.INF component that is used by its main malware as an autostart technique.

It executes the following file:

• {Drive}:\GLEDAJU\topimse.exe

As a result, malicious routines of executed file are exhibited on the system.

  SOLUTION

Minimum Scan Engine:

9.200

FIRST VSAPI PATTERN FILE:

8.492.04

FIRST VSAPI PATTERN DATE:

13 Oct 2011

VSAPI OPR PATTERN File:

8.493.00

VSAPI OPR PATTERN Date:

13 Oct 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

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