TROJ_DLDR.BKD

October 09, 2012
 Analysis by: Erika Bianca Mendoza
 PLATFORM:

Windows 2000, Windows XP, Windows 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 is a component of other malware.

  TECHNICAL DETAILS

File Size:

16,384 bytes

File Type:

DLL

Memory Resident:

Yes

Initial Samples Received Date:

27 Aug 2011

Arrival Details

This malware arrives via the following means:

  • legitimate file modified by another malware to perform its malicious routines

Installation

This Trojan is a component of other malware.

NOTES:

This is Trend Micro's detection for a modified .DLL file which can be used to download another file into the system. It may also be installed as a service. It may access the URL below:

  • http://www.{BLOCKED}dio.com/query.php

  SOLUTION

Minimum Scan Engine:

8.900

FIRST VSAPI PATTERN FILE:

8.384.02

FIRST VSAPI PATTERN DATE:

28 Aug 2011

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 and note files detected as TROJ_DLDR.BKD

Step 3

Restart in Safe Mode

[ Learn More ]

Step 4

Restart in normal mode and scan your computer with your Trend Micro product for files detected as TROJ_DLDR.BKD. 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 5

Search and delete the file detected as TROJ_DLDR.BKD

[ Learn More ]
Please make sure you check the Search Hidden Files and Folders checkbox in the More advanced options option to include all hidden files in the search result.


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