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: Yes

  • In the wild: Yes

  OVERVIEW

This backdoor may arrive bundled with malware packages as a malware component. It may be dropped by other malware.

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

  TECHNICAL DETAILS

File Size: Varies
File Type: SYS
Memory Resident: No
Initial Samples Received Date: 15 Oct 2010

Arrival Details

This backdoor may arrive bundled with malware packages as a malware component.

It may be dropped by other malware.

Other Details

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

It does the following:

  • This backdoor is usually dropped on a system using the file name cdrom.sys. It is used by its main component to open random ports where it connect to a remote site. As a result, remote malicious user may then execute commands on the affected system, thus, compromising system security.

  SOLUTION

Minimum Scan Engine: 8.900
VSAPI PATTERN File: 7.544.01
VSAPI PATTERN Date: 15 Oct 2010
VSAPI PATTERN Date: 10/15/2010 12:00:00 AM

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 to delete files detected as BKDR_NETAN.W. 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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