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BKDR_ASPACE.EF

April 23, 2013
 Analysis by: Rhena Inocencio
 ALIASES:

Backdoor:ASP/Ace (Microsoft), Troj/ASPAce-Fam (Sophos)

 PLATFORM:

Windows 2000, Windows Server 2003, Windows XP (32-bit, 64-bit), Windows Vista (32-bit, 64-bit), Windows 7 (32-bit, 64-bit)

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

  • Threat Type: Backdoor

  • Destructiveness: No

  • Encrypted: No

  • In the wild: Yes

  OVERVIEW

Infection Channel:

Dropped by other malware, Downloaded from the Internet


This backdoor arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

It redirects browsers to certain sites.

  TECHNICAL DETAILS

File Size:

177,918 bytes

File Type:

ASP

Initial Samples Received Date:

06 Dec 2012

Payload:

Compromises system security

Arrival Details

This backdoor arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

Other Details

This backdoor redirects browsers to the following sites:

  • Redirect to http://{host}/m.htm

NOTES:

This backdoor may perform the following commands on affected machines:

  • Manage files and folders
    Create, open and delete folders
    Edit, copy, move, delete and upload files
  • Scan drives
  • Get Terminal Information
  • Scan Port
  • Perform Remote Shell
  • Read registry entries
  • Logout
  • Redirect to another site
  • Run scripts
  • Get credentials from the following installed applications:

    MS Sql
    Servu FTP
    Radmin
    Pcanywhere (Caller Information Template file)
  • Get List of Administrators

  SOLUTION

Minimum Scan Engine:

9.300

Step 1

Before doing any scans, Windows XP, Windows Vista, and Windows 7 users must disable System Restore to allow full scanning of their computers.

Step 2

Scan your computer with your Trend Micro product to delete files detected as BKDR_ASPACE.EF. 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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