TROJ_DLWIMAD.SMI

October 08, 2012
 Analysis by: Christopher Daniel So
 ALIASES:

TrojanDownloader:ASX/Wimad.BC, TrojanDownloader:ASX/Wimad.BV, TrojanDownloader:ASX/Wimad.CA, TrojanDownloader:ASX/Wimad.CB (Microsoft); Trojan.Wimad (Symantec); Trojan-Downloader.WMA.Wimad.x, Trojan-Downloader.WMA.Wimad.y (Kaspersky); Troj/ASFDldr-C (Sophos)

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

  TECHNICAL DETAILS

File Size:

Varies

File Type:

ASF

Memory Resident:

No

Initial Samples Received Date:

29 Sep 2010

Arrival Details

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

Download Routine

This Trojan accesses the following websites to download files:

  • http://www.{BLOCKED}meplayer.com/license.cgi
  • http://www.{BLOCKED}tmp3player.com/license.cgi
  • http://www.{BLOCKED}ablesongslive.com/license.cgi
  • http://www.{BLOCKED}eatsongs.com/license.cgi

It saves the files it downloads using the following names:

  • PLAY_MP3.exe

Trend Micro detects the dowloaded file as:

  • ADW_MEGASWELL

  SOLUTION

Minimum Scan Engine:

8.900

VSAPI PATTERN File:

7.503.00

VSAPI PATTERN Date:

30 Sep 2010

VSAPI PATTERN Date:

9/30/2010 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

Remove malware files dropped/downloaded by TROJ_DLWIMAD.SMI

Step 3

Scan your computer with your Trend Micro product to delete files detected as TROJ_DLWIMAD.SMI. 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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