TSPY_KEYLOGR.LN

 Analysis by: Cris Nowell Pantanilla

 PLATFORM:

Windows

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

  • Threat Type: Spyware

  • Destructiveness: No

  • Encrypted: No

  • In the wild: Yes

  OVERVIEW

Infection Channel:

Downloaded from the Internet, Dropped by other malware

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.

It logs a user's keystrokes to steal information.

It connects to certain websites to send and receive information.

  TECHNICAL DETAILS

File Size:

929,792 bytes

File Type:

EXE

Memory Resident:

Yes

Initial Samples Received Date:

16 Nov 2014

Payload:

Logs keystrokes, Drops files

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.

Installation

This spyware drops the following copies of itself into the affected system and executes them:

  • %User StartUp%\waho.exe

It drops the following files:

  • %User Temp%\pdf.ico

(Note: %User Temp% is the user's temporary folder, where it usually is C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\AppData\Local\Temp on Windows Vista (32- and 64-bit), Windows 7 (32- and 64-bit), Windows 8 (32- and 64-bit), Windows 8.1 (32- and 64-bit), Windows Server 2008, and Windows Server 2012.)

Other System Modifications

This spyware adds the following registry keys:

HKEY_CURRENT_USER\Software\VB and VBA Program Settings

It adds the following registry entries:

HKEY_CURRENT_USER\Software\VB and VBA Program Settings\
%User StartUp%\logs
logs = "{Logged Keystrokes}"

HKEY_CURRENT_USER\Software\VB and VBA Program Settings\
%User StartUp%\Settimess
Settimess = 60

HKEY_CURRENT_USER\Software\VB and VBA Program Settings\
%User StartUp%\subb
subb = "LION"

HKEY_CURRENT_USER\Software\VB and VBA Program Settings\
%User StartUp%\Timesy
Timesy = "32"

Information Theft

This spyware logs a user's keystrokes to steal information.

Other Details

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

  • http://www.{BLOCKED}ok.com/mobile/mobile.php

  SOLUTION

Minimum Scan Engine:

9.700

VSAPI OPR PATTERN File:

11.281.00

VSAPI OPR PATTERN Date:

17 Nov 2014

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_KEYLOGR.LN

[ 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
    • VB and VBA Program Settings

Step 4

Search and delete these files

[ Learn More ]
There may be some files that are hidden. Please make sure you check the Search Hidden Files and Folders checkbox in the "More advanced options" option to include all hidden files and folders in the search result. Ͽer TempϿdf.ico

Step 5

Scan your computer with your Trend Micro product to delete files detected as TSPY_KEYLOGR.LN. 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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