Analysis by: Erika Bianca Mendoza
 PLATFORM:

Windows 2000, Windows XP, Windows Server 2003

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

  • Threat Type: Backdoor

  • Destructiveness: No

  • Encrypted: No

  • In the wild: Yes

  OVERVIEW

This backdoor may be unknowingly downloaded by a user while visiting malicious websites. It may be dropped by other malware.

  TECHNICAL DETAILS

File Size: 16,384 bytes
File Type: DLL
Memory Resident: Yes
Initial Samples Received Date: 20 Sep 2011

Arrival Details

This backdoor may be unknowingly downloaded by a user while visiting malicious websites.

It may be dropped by the following malware:

  • TROJ_DROPPER.CQY

NOTES:

This file is installed as a service by another malware. Once running, it attempts to access the following C&C server:

  • {BLOCKED}s.FindHere.org

If connection is succesful, it waits for commands from the remote user to perform any of the following:

  • download other files
  • execute file
  • execute shell via command line
  • list processes
  • terminate processes
  • uninstall

  SOLUTION

Minimum Scan Engine: 9.200
FIRST VSAPI PATTERN FILE: 8.440.10
FIRST VSAPI PATTERN DATE: 20 Sep 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

Remove the malware/grayware file that dropped/downloaded BKDR_SMALL.DRK

     TROJ_DROPPER.CQY

Step 3

Scan your computer with your Trend Micro product and note files detected as BKDR_SMALL.DRK

Step 4

Restart in Safe Mode

[ Learn More ]

Step 5

Search and delete the file detected as BKDR_SMALL.DRK

[ 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.

Step 6

Restart in normal mode and scan your computer with your Trend Micro product for files detected as BKDR_SMALL.DRK. 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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