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TSPY_SPCESEND.B

April 24, 2013
 Analysis by: Merianne Polintan
 ALIASES:

Trojan:Win32/Kuluoz.gen!A(Microsoft),Infostealer.Offsupload(Norton),Trojan.Win32.Generic!BT(Sunbelt),W32/Kryptik.AY!tr(FORTINET),Mal/Zbot-EZ(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:
 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:

552,448 bytes

File Type:

EXE

Memory Resident:

No

Initial Samples Received Date:

06 Feb 2012

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 files:

  • %User Temp%\{Random File Name}.zip

(Note: %User Temp% is the current user's Temp folder, which is usually C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000, XP, and Server 2003, or C:\Users\{user name}\AppData\Local\Temp on Windows Vista and 7.)

Other System Modifications

This spyware adds the following registry keys:

HKEY_CURRENT_USER\Software
hyijgy78 =

It adds the following registry entries:

HKEY_CURRENT_USER\Software\hyijgy78
ghiu768hj = "1"

Other Details

This spyware connects to the following possibly malicious URL:

  • http://www.{BLOCKED}78483825.ru/send/log.php

  SOLUTION

Minimum Scan Engine:

9.300

FIRST VSAPI PATTERN FILE:

9.864.03

FIRST VSAPI PATTERN DATE:

06 Feb 2012

VSAPI OPR PATTERN File:

9.865.00

VSAPI OPR PATTERN Date:

07 Feb 2012

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

Restart in Safe Mode

[ Learn More ]

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. Before you could do this, you must restart in Safe Mode. For instructions on how to do this, you may refer to this page If the preceding step requires you to restart in safe mode, you may proceed to edit the system registry.

  • In HKEY_CURRENT_USER\Software
    • hyijgy78

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. %User Temp%\{Random File Name}.zip

Step 5

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