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TROJ_PIDIEF.WX
Malware type: Trojan
Destructive: No
Platform: Windows 98, ME, NT, 2000, XP, Server 2003
In the wild: Yes

Overview



It may be downloaded by other malware/grayware/spyware from remote sites.
It arrives as an attachment to email messages spammed by other malware/grayware/spyware or malicious users.

Technical Details




Arrival Details


It may be downloaded by other malware/grayware/spyware from remote sites.


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



Download Routine


It accesses the following websites to download files:

  • {BLOCKED}.{BLOCKED}.31.214/img/xslu.exe


Trend Micro detects the dowloaded file as:

  • TROJ_SMALL.WJX



Other Details


It exploits a zero-day vulnerability in:

  • Adobe Flash Player 10.0.45.2

  • Adobe Flash Player 9.0.262

  • Adobe Flash Player earlier 10.0.x

  • Adobe Flash Player earlier 9.0.x

  • Adobe Reader

  • Acrobat 9.3.2

  • Acrobat earlier 9.x


More information on this vulnerability can be found below:

  • http://www.adobe.com/support/security/advisories/apsa10-01.html

Solution


Minimum scan engine: 8.900
VSAPI OPR Pattern Version: 7.223.00



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_PIDIEF.WX
    TROJ_SMALL.WJX


Step 3
Scan your computer with your Trend Micro product to delete files detected as TROJ_PIDIEF.WX 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.


Step 4

This step disables JavaScript rendering in Adobe Acrobat/Reader.

  1. In your Adobe Acrobat/Reader window, Click Edit then choose Preferences.
  2. In the left panel, click JavaScript.
  3. In the right panel, uncheck the Enable Acrobat JavaScript option.
  4. Click OK.


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