Analysis by: Roland Marco Dela Paz
 PLATFORM:

Windows 2000, Windows XP, Windows Server 2003

 OVERALL RISK RATING:
 REPORTED INFECTION:
 SYSTEM IMPACT RATING:
 INFORMATION EXPOSURE:

  • Threat Type: Spyware

  • Destructiveness: No

  • Encrypted: Yes

  • In the wild: Yes

  OVERVIEW

Infection Channel: Dropped by other malware

This spyware may be dropped by other malware.

It connects to certain websites to send and receive information.

  TECHNICAL DETAILS

File Size: 46,304 bytes
File Type: PE
Memory Resident: Yes
Initial Samples Received Date: 12 Apr 2012

Arrival Details

This spyware may be dropped by the following malware:

  • TROJ_ARTIEF.FU
  • TROJ_MDROP.GDL

Installation

This spyware drops the following files:

  • %System Root%\Documents and Settings\All Users\Application Data\Windows NT\NtHelpConfig.log - encrypted component
  • %System Root%\Documents and Settings\All Users\Application Data\Windows NT\NtHelpIndex.sbr - encrypted component
  • %System Root%\Documents and Settings\All Users\Application Data\Windows NT\NtHelpKey.cfg - encrypted component
  • %System Root%\Documents and Settings\All Users\Application Data\Windows NT\NtHelpKey.sbr - encrypted component

(Note: %System Root% is the root folder, which is usually C:\. It is also where the operating system is located.)

It drops the following component file(s):

  • %System Root%\WINDOWS\fxsst.dll - also detected as TSPY_GEDDEL.EVL
  • %System Root%\Documents and Settings\All Users\Application Data\Windows NT\common.cfg - encrypted binary component. When decrypted, it is also detected as TSPY_GEDDEL.EVL

(Note: %System Root% is the root folder, which is usually C:\. It is also where the operating system is located.)

It adds the following processes:

  • explorer.exe

It creates the following folders:

  • %System Root%\Documents and Settings\All Users\Application Data\Windows NT
  • %System Root%\Documents and Settings\All Users\Application Data\Windows NT\Support

(Note: %System Root% is the root folder, which is usually C:\. It is also where the operating system is located.)

It injects itself into the following processes as part of its memory residency routine:

  • explorer.exe

Process Termination

This spyware terminates processes or services that contain any of the following strings if found running in the affected system's memory:

  • ccsvchst
  • sfctlcom
  • ravmond
  • mpmon
  • twister
  • vsmon
  • Mupage
  • KSafeSvc
  • avguard.exe

Other Details

This spyware connects to the following website to send and receive information:

  • 1.test.{BLOCKED}2.org.cn
  • 2.test.{BLOCKED}2.org.cn
  • 3.test.{BLOCKED}2.org.cn
  • 4.test.{BLOCKED}2.org.cn
  • 123ewqasdcxz.{BLOCKED}p.net
  • hoop-america.{BLOCKED}p.net

NOTES:

This spyware logs open windows and user keystrokers to steal information. It then saves the stolen information in the file %System Root%\Documents and Settings\All Users\Application Data\Windows NT\Support\{numbers}.kb.

(Note: %System Root% is the root folder, which is usually C:\. It is also where the operating system is located.)

  SOLUTION

Minimum Scan Engine: 9.200
FIRST VSAPI PATTERN FILE: 8.910.06
FIRST VSAPI PATTERN DATE: 14 Apr 2012
VSAPI OPR PATTERN File: 8.911.00
VSAPI OPR PATTERN Date: 15 Apr 2012

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

Remove malware/grayware files that dropped/downloaded TSPY_GEDDEL.EVL

Step 3

Restart in Safe Mode

[ Learn More ]

Step 4

Search and delete these folders

[ Learn More ]
Please make sure you check the Search Hidden Files and Folders checkbox in the More advanced options option to include all hidden folders in the search result.
  • %System Root%\Documents and Settings\All Users\Application Data\Windows NT

Step 5

Restart in normal mode and scan your computer with your Trend Micro product for files detected as TSPY_GEDDEL.EVL. 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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