Analysis by: Kathleen Notario
 Modified by: Jon Timbre
 PLATFORM:

Windows 2000, XP, 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 unknowingly downloaded by a user while visiting malicious websites.

It executes the files it drops, prompting the affected system to exhibit the malicious routines they contain.

  TECHNICAL DETAILS

File Size: 71,168 bytes
File Type: EXE
Memory Resident: No
Initial Samples Received Date: 10 Nov 2010

Arrival Details

This Trojan may be unknowingly downloaded by a user while visiting malicious websites.

Dropping Routine

This Trojan drops the following files:

  • %system%\jthv.oao - detected by Trend Micro as TROJ_DLOADR.AWC

It executes the files it drops, prompting the affected system to exhibit the malicious routines they contain.

  SOLUTION

Minimum Scan Engine: 8.900
VSAPI PATTERN File: 7.606.12
VSAPI PATTERN Date: 10 Nov 2010
VSAPI PATTERN Date: 11/10/2010 12:00:00 AM

Step 1

For Windows ME and XP 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_OFICLA.TAG

     TROJ_DLOADR.AWC

Step 3

Scan your computer with your Trend Micro product to delete files detected as TROJ_OFICLA.TAG 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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