TROJ_THOPER.AL


 ALIASES:

TrojanDownloader:Win32/Thoper.B(Microsoft), Trojan.Win32.Webprefix(Ikarus)

 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: Trojan

  • Destructiveness: No

  • Encrypted:

  • In the wild: Yes

  OVERVIEW

This Trojan arrives as a component bundled with malware/grayware packages.

  TECHNICAL DETAILS

File Size:

159,232 bytes

File Type:

DLL

Memory Resident:

Yes

Initial Samples Received Date:

02 Apr 2013

Arrival Details

This Trojan arrives as a component bundled with malware/grayware packages.

Installation

This Trojan creates the following folders:

  • %Program Data%\Microsoft\Search
  • %Program Data%\Microsoft\Search\Data
  • %Program Data%\Microsoft\Search\Data\Applications
  • %Program Data%\Microsoft\Search\Data\Applications\Windows
  • %Program Data%\Microsoft\Search\Data\Applications\Windows\Projects
  • %Program Data%\Microsoft\Search\Data\Applications\Windows\Projects\SystemIndex
  • %Program Data%\Microsoft\Search\Data\Applications\Windows\Projects\SystemIndex\Indexer
  • %Program Data%\Microsoft\Search\Data\Applications\Windows\Projects\SystemIndex\Indexer\CiFiles
  • %Program Data%\Microsoft\RAC\PublishedData

Other System Modifications

This Trojan adds the following registry keys:

HKEY_CLASSES_ROOT\SS

It adds the following registry entries:

HKEY_CLASSES_ROOT\SS
CLSID = "{random value}"

Other Details

This Trojan connects to the following possibly malicious URL:

  • http://{BLOCKED}t.{BLOCKED}tingserrvices.com
  • http://{BLOCKED}.{BLOCKED}.83.48