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TROJ_PIDIEF.WU

June 06, 2010
 Analysis by: Kathleen Notario
 PLATFORM:

Windows 98, ME, NT, 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 has received attention from independent media sources and/or other security firms.

To get a one-glance comprehensive view of the behavior of this Trojan, refer to the Threat Diagram shown below.

This is the Trend Micro detection for .PDF files that contain malicious a Visual Basic (VB) script.

This Trojan arrives as an attachment to email messages spammed by other malware/grayware or malicious users. It may be unknowingly downloaded by a user while visiting malicious websites.

  TECHNICAL DETAILS

File Size:

290,708 bytes

File Type:

PDF

Memory Resident:

No

Initial Samples Received Date:

31 May 2009

Payload:

Drops files

Arrival Details

This Trojan arrives as an attachment to email messages spammed by other malware/grayware or malicious users.

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

Other Details

Based on analysis of the codes, it has the following capabilities:

  • Drops a .VBS component script which is responsible for dropping and executing EXE.EXE. Trend Micro detects the executable as TROJ_FAKEAV.MAE.

  SOLUTION

Minimum Scan Engine:

8.900

VSAPI OPR PATTERN File:

6.159.00

VSAPI OPR PATTERN Date:

31 May 2009

Step 1

Remove malware files dropped/downloaded by TROJ_PIDIEF.WU

     TROJ_FAKEAV.MAE

Step 2

Scan your computer with your Trend Micro product to delete files detected as TROJ_PIDIEF.WU. 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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