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BKDR_QAKBOT.BJ

October 08, 2012
 Analysis by: Christopher Daniel So
 PLATFORM:

Windows 98, ME, NT, 2000, XP, Server 2003

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

  • Threat Type: Backdoor

  • Destructiveness: No

  • Encrypted: No

  • In the wild: Yes

  OVERVIEW


However, as of this writing, the said sites are inaccessible.

It executes then deletes itself afterward.

It connects to a website to send and receive information.

  TECHNICAL DETAILS

File Size:

377,984 bytes

File Type:

PE

File Compression:

UPX

Memory Resident:

Yes

Initial Samples Received Date:

30 Jul 2010

Payload:

Connects to URLs/Ips

Arrival Details

However, as of this writing, the said sites are inaccessible.

Installation

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

  • %AllUsersAppData%\Microsoft\{Random Folder Name}\{Random File Name}

It executes then deletes itself afterward.

Backdoor Routine

This backdoor connects to the following websites to send and receive information:

  • http://hostrmeter.com/cgi-bin/exhandler4.pl

Download Routine

This backdoor accesses the following websites to download files:

  • http://nt14.in/cgi-bin/jl/jloader.pl?r=q/qa.bin&n=pvsnd2639&it=3&b=1

  SOLUTION

Minimum Scan Engine:

8.900

Step 1

Scan your computer with your Trend Micro product and note files detected as BKDR_QAKBOT.BJ

Step 2

Scan your computer with your Trend Micro product to delete files detected as BKDR_QAKBOT.BJ. 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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