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BKDR_AGENT.WKP

February 23, 2011
 Analysis by: Jasper Manuel
 ALIASES:

Microsoft: Backdoor:Win32/Mecklow.A; Hbedv: TR/Hijacker.Gen

 PLATFORM:

Windows 2000, 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 dropped by other malware. It may be unknowingly downloaded by a user while visiting malicious websites.

It connects to a website to send and receive information.

  TECHNICAL DETAILS

File Size:

Varies

File Type:

PE

Memory Resident:

Yes

Initial Samples Received Date:

26 Dec 2010

Arrival Details

This backdoor may be dropped by other malware.

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

Backdoor Routine

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

  • http://{BLOCKED}nup.zyns.com/AWS{random}.jsp?{random}

  SOLUTION

Minimum Scan Engine:

8.900

VSAPI PATTERN File:

7.730.01

VSAPI PATTERN Date:

27 Dec 2010

VSAPI PATTERN Date:

12/27/2010 12:00:00 AM

Step 1

For Windows ME and XP 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 BKDR_AGENT.WKP

[ Learn More ]
  1. For Windows 98 and ME users, Windows Task Manager may not display all running processes. In this case, please use a third-party process viewer, preferably Process Explorer, to terminate the malware/grayware/spyware file. You may download the said tool here.
  2. 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.
  3. 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 BKDR_AGENT.WKP 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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