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TROJ_DLOADER.TEP

October 08, 2012
 Analysis by: Michael Cabel
 ALIASES:

Microsoft: VirTool:Win32/Obfuscator.MZ; Kaspersky: Trojan-Downloader.Win32.Injecter.ezs

 PLATFORM:

Windows 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 may be downloaded by other malware/grayware/spyware from remote sites. It arrives as a component bundled with malware/grayware packages.

It executes then deletes itself afterward.

It attempts to access certain websites. However, the websites are inaccessible as of this writing. It requires its main component to successfully perform its intended routine.

  TECHNICAL DETAILS

File Size:

30,720 bytes

File Type:

PE

Memory Resident:

No

Initial Samples Received Date:

01 Feb 2011

Payload:

Downloads files

Arrival Details

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

It arrives as a component bundled with malware/grayware packages.

Installation

This Trojan executes then deletes itself afterward.

It injects threads into the following normal process(es):

  • svchost.exe

Other Details

This Trojan attempts to access certain websites. However, the websites are inaccessible as of this writing.

It requires its main component to successfully perform its intended routine.

It attempts to access the following websites to download files, which are possibly malicious:

  • http://{BLOCKED}x.net/wxp/load.php?file=0

  SOLUTION

Minimum Scan Engine:

8.900

VSAPI PATTERN File:

7.806.13

VSAPI PATTERN Date:

01 Feb 2011

VSAPI PATTERN Date:

2/1/2011 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

Scan your computer with your Trend Micro product to delete files detected as TROJ_DLOADER.TEP. 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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