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TSPY_TEPFER.XE

March 07, 2014
 Modified by: Mark Joseph Manahan
 ALIASES:

Trojan-PSW.Win32.Tepfer.ejxx (Kaspersky)

 PLATFORM:

Windows 2000, Windows XP, Windows Server 2003

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

  • Threat Type: Spyware

  • Destructiveness: No

  • Encrypted:

  • In the wild: Yes

  OVERVIEW


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

  TECHNICAL DETAILS

File Size:

98,304 bytes

File Type:

EXE

Memory Resident:

Yes

Initial Samples Received Date:

15 Jan 2013

Arrival Details

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

Other System Modifications

This spyware adds the following registry keys:

HKEY_CURRENT_USER\Software\WinRAR

It adds the following registry entries:

HKEY_CURRENT_USER\Software\WinRAR
HWID = "{random values}"

Other Details

This spyware connects to the following possibly malicious URL:

  • http://{BLOCKED}.{BLOCKED}.58.250:8080/asp/intro.php
  • http://{BLOCKED}.{BLOCKED}.65.77:8080/asp/intro.php
  • http://{BLOCKED}.{BLOCKED}.49.112:8080/asp/intro.php
  • http://{BLOCKED}.{BLOCKED}.216.70:8080/asp/intro.php
  • http://{BLOCKED}.{BLOCKED}.18.158:8080/asp/intro.php
  • http://{BLOCKED}.{BLOCKED}.221.186:8080/asp/intro.php
  • http://{BLOCKED}.{BLOCKED}.120.103:8080/asp/intro.php
  • http://{BLOCKED}.{BLOCKED}.98.131:8080/asp/intro.php
  • http://{BLOCKED}.{BLOCKED}.208.180:8080/asp/intro.php
  • http://{BLOCKED}.{BLOCKED}.252.26:8080/asp/intro.php
  • http://{BLOCKED}.{BLOCKED}.16.81:8080/asp/intro.php
  • http://{BLOCKED}.{BLOCKED}.57.208:8080/asp/intro.php
  • http://{BLOCKED}.{BLOCKED}.144.115:8080/asp/intro.php
  • http://{BLOCKED}.{BLOCKED}.57.208:8080/asp/intro.php

  SOLUTION

Minimum Scan Engine:

9.300

FIRST VSAPI PATTERN FILE:

9.656.05

FIRST VSAPI PATTERN DATE:

15 Jan 2013

VSAPI OPR PATTERN File:

9.657.00

VSAPI OPR PATTERN Date:

15 Jan 2013

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

Identify and terminate files detected as TSPY_TEPFER.XE

[ Learn More ]
  1. Windows Task Manager may not display all running processes. In this case, please use a third-party process viewer, preferably Process Explorer, to terminate the malware/grayware/spyware file. You may download the said tool here.
  2. If the detected file is displayed in either Windows Task Manager or Process Explorer but you cannot delete it, restart your computer in safe mode. To do this, refer to this link for the complete steps.
  3. If the detected file is not displayed in either Windows Task Manager or Process Explorer, continue doing the next steps.

Step 3

Delete this registry key

[ Learn More ]

Important: Editing the Windows Registry incorrectly can lead to irreversible system malfunction. Please do this step only if you know how or you can ask assistance from your system administrator. Else, check this Microsoft article first before modifying your computer's registry.

  • In HKEY_CURRENT_USER\Software
    • WinRAR

Step 4

Scan your computer with your Trend Micro product to delete files detected as TSPY_TEPFER.XE. 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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