PLATFORM:

Windows

 OVERALL RISK RATING:
 DAMAGE POTENTIAL:
 DISTRIBUTION POTENTIAL:
 REPORTED INFECTION:
 INFORMATION EXPOSURE:

  • Threat Type: Trojan

  • Destructiveness: No

  • Encrypted: No

  • In the wild: Yes

  OVERVIEW

Infection Channel: Dropped by other malware

This Trojan may be dropped by other malware.

It executes the downloaded files. As a result, malicious routines of the downloaded files are exhibited on the affected system.

  TECHNICAL DETAILS

File Size: 1170 bytes
File Type: Other
Initial Samples Received Date: 07 Nov 2014
Payload: Downloads files

Arrival Details

This Trojan may be dropped by the following malware:

  • W97M_DLOADER.AI

Other System Modifications

This Trojan deletes the following files:

  • %Temp%\adobeacd-update.bat
  • %Temp%\adobeacd-update.vbs
  • %Temp%\444.exe - deleted after execution

(Note: %Temp% is the Windows temporary folder, where it usually is C:\Windows\Temp on all Windows operating system versions.)

Download Routine

This Trojan accesses the following websites to download files:

  • http://{BLOCKED}.{BLOCKED}.31.9/work.exe

It saves the files it downloads using the following names:

  • %Temp%\444.exe - detected as TROJ_ROVNIX.NGT

(Note: %Temp% is the Windows temporary folder, where it usually is C:\Windows\Temp on all Windows operating system versions.)

It then executes the downloaded files. As a result, malicious routines of the downloaded files are exhibited on the affected system.

  SOLUTION

Minimum Scan Engine: 9.700

Step 1

Before doing any scans, Windows XP, Windows Vista, and Windows 7 users must disable System Restore to allow full scanning of their computers.

Step 2

Remove the malware/grayware file that dropped/downloaded TROJ_POWDLOD.GN. (Note: Please skip this step if the threat(s) listed below have already been removed.)

     
    • W97M_DLOADER.AI

Step 3

Remove malware/grayware files dropped/downloaded by TROJ_POWDLOD.GN. (Note: Please skip this step if the threats listed below have already been removed.)

    • TROJ_ROVNIX.NGT

Step 4

Scan your computer with your Trend Micro product to delete files detected as TROJ_POWDLOD.GN. 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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