Analysis by: jasperm
ALIASES:

Sophos: Troj/Wimad-N; Symantec: Trojan.Brisv.A; Microsoft: TrojanDownloader:ASX/Wimad.AD

 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

It accesses a website to download files.

This Trojan may be dropped by other malware. It may be unknowingly downloaded by a user while visiting malicious websites. However, as of this writing, the said sites are inaccessible.

  TECHNICAL DETAILS

File Size: 5,745,425 bytes
File Type: MP3
Memory Resident: No
Initial Samples Received Date: 22 Feb 2009
Payload: Connects to URLs/Ips

Arrival Details

This Trojan may be dropped by other malware.

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

However, as of this writing, the said sites are inaccessible.

Download Routine

This Trojan accesses the following websites to download files:

  • http://{BLOCKED}ecdownload.com/codec/codec.php?embedded=false

  SOLUTION

Minimum Scan Engine: 8.900
VSAPI PATTERN File: 5.861.00
VSAPI PATTERN Date: 22 Feb 2009
VSAPI PATTERN Date: 2/22/2009 12:00:00 AM

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_GETCODEC.AV. 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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