TROJ_DLOADR.NGE

October 09, 2012
 Analysis by: Kathleen Notario
 Modified by: Karl Dominguez
 PLATFORM:

Windows 2000, Windows XP, Windows Server 2003

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

  • Threat Type: Trojan

  • Destructiveness: No

  • Encrypted: Yes

  • In the wild: Yes

  OVERVIEW

This Trojan sends lists of running processes before and after downloading additional files are to a certain URL. This routine is done to check if it successfully executed the files it downloaded.

It connects to a certain URL to notify a remote user of an infection.

This Trojan arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

As of this writing, the said sites are inaccessible.

  TECHNICAL DETAILS

File Size:

56,996 bytes

File Type:

EXE

Memory Resident:

Yes

Initial Samples Received Date:

28 Aug 2008

Payload:

Sends lists of running processes

Arrival Details

This Trojan arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

Installation

This Trojan drops the following copies of itself into the affected system:

  • %User Temp%\System.exe

(Note: %User Temp% is the current user's Temp folder, which is usually C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000, XP, and Server 2003.)

Download Routine

This Trojan connects to the following website(s) to download and execute a malicious file:

  • http://www.{BLOCKED}ar.com/{BLOCKED}wm/xhtml.php?token=0xABCD
  • http://{BLOCKED}8.{BLOCKED}3.5.119:88/images/3.jpg
  • http://{BLOCKED}8.{BLOCKED}3.5.50:82/green/ms.exe
  • http://{BLOCKED}8.{BLOCKED}3.5.50:82/green/sec.exe
  • http://{BLOCKED}8.{BLOCKED}3.5.50:82/green/svchost.exe

As of this writing, the said sites are inaccessible.

NOTES:

Lists of running processes before and after downloading additional files are sent to the following URL. This routine is done to check if it successfully executed the files it downloaded.

  • http://{BLOCKED}8.{BLOCKED}3.5.50:82/stat/stat3.php?uid={value}&zid=0&cid=1&gid={value}&token={value}&processb={processes before download}&process={processes after download}&client={value}

It connects to the following URL to notify a remote user of an infection.

  • http://{BLOCKED}8.{BLOCKED}3.5.119:88/images/get.php?id={value}

  SOLUTION

Minimum Scan Engine:

8.900

FIRST VSAPI PATTERN FILE:

5.508.03

FIRST VSAPI PATTERN DATE:

28 Aug 2008

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

Identify and terminate files detected as TROJ_DLOADR.NGE

[ Learn More ]
  1. If the detected file is displayed in either Windows Task Manager or Process Explorer but you cannot delete it, restart your computer in safe mode. To do this, refer to this link for the complete steps.
  2. If the detected file is not displayed in either Windows Task Manager or Process Explorer, continue doing the next steps.

Step 3

Scan your computer with your Trend Micro product to delete files detected as TROJ_DLOADR.NGE. 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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