Analysis by: Michael Cabel
 PLATFORM:

Windows 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

BLOCKED:

http://89.187.37.106

http://89.187.53.197

http://27.131.32.21

http://91.213.174.40

This backdoor opens a hidden Internet Explorer window.

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

  TECHNICAL DETAILS

File Size: Varies
File Type: DLL
Memory Resident: Yes
Initial Samples Received Date: 27 Jul 2010
Payload: Compromises system security

Backdoor Routine

This backdoor opens a hidden Internet Explorer window.

It connects to the following URL(s) to send and receive commands from a remote malicious user:

  • http://{BLOCKED}.{BLOCKED}.37.106
  • http://{BLOCKED}.{BLOCKED}.53.197
  • http://{BLOCKED}.{BLOCKED}.32.21
  • http://{BLOCKED}.{BLOCKED}.174.40

Other Details

This backdoor requires its main component to successfully perform its intended routine.

  SOLUTION

Minimum Scan Engine: 8.900
VSAPI PATTERN File: 07.340.15
VSAPI PATTERN Date: 27 Jul 2010
VSAPI PATTERN Date: 7/27/2010 12:00:00 AM
FIRST VSAPI PATTERN FILE: 6.880.05
FIRST VSAPI PATTERN DATE: 27 Feb 2010
VSAPI OPR PATTERN File: 7.341.00
VSAPI OPR PATTERN Date: 27 Jul 2010

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 BKDR_PAPRAS.BQ

Step 3

Restart in Safe Mode

[ Learn More ]

Step 4

Search and delete the file detected as BKDR_PAPRAS.BQ

[ 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.


Did this description help? Tell us how we did.