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TSPY_INJECTO.JBR

April 19, 2013
 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:

91,648 bytes

File Type:

EXE

Memory Resident:

Yes

Initial Samples Received Date:

18 Apr 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.

Installation

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

  • %All Users Profile%\{random}.exe (Windows Vista and higher versions)
  • %All Users Profile%\Application Data\{random}.exe (Versions lower than Windows Vista)

(Note: %All Users Profile% is the All Users or Common profile folder, which is C:\Documents and Settings\All Users in Windows 2000, XP, and Server 2003, and C:\ProgramData in Windows Vista and 7.)

Autostart Technique

This spyware adds the following registry entries to enable its automatic execution at every system startup:

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Run
{random} = "%All Users Profile%\{random}.exe" (Windows Vista and higher versions)

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Run
{random} = "%All Users Profile%\Application Data\{random}.exe" (Versions lower than Windows Vista)

Other System Modifications

This spyware adds the following registry keys:

HKEY_CURRENT_USER\Software\{random}

It adds the following registry entries as part of its installation routine:

HKEY_CURRENT_USER\Software\{random}
CurrentPath111 = "%All Users Profile%\{random}.exe" (Windows Vista and higher versions)

HKEY_CURRENT_USER\Software\{random}
CurrentPath111 = "%All Users Profile%\Application Data\{random}.exe" (Versions lower than Windows Vista)

Other Details

This spyware connects to the following possibly malicious URL:

  • http://{BLOCKED}l-assist.ru/postnuke/blog.php
  • http://{BLOCKED}g-names.in.ua/postnuke/blog.php
  • http://{BLOCKED}y-charger.ru/postnuke/blog.php

  SOLUTION

Minimum Scan Engine:

9.300

FIRST VSAPI PATTERN FILE:

9.864.07

FIRST VSAPI PATTERN DATE:

19 Apr 2013

VSAPI OPR PATTERN File:

9.865.00

VSAPI OPR PATTERN Date:

19 Apr 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

Restart in Safe Mode

[ Learn More ]

Step 3

Delete this registry value

[ 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\Microsoft\Windows\CurrentVersion\Run
    • {random} = "%All Users Profile%\{random}.exe" (Windows Vista and higher versions)
  • In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run
    • {random} = "%All Users Profile%\Application Data\{random}.exe" (Versions lower than Windows Vista)
  • In HKEY_CURRENT_USER\Software\{random}
    • CurrentPath111 = "%All Users Profile%\{random}.exe" (Windows Vista and higher versions)
  • In HKEY_CURRENT_USER\Software\{random}
    • CurrentPath111 = "%All Users Profile%\Application Data\{random}.exe" (Versions lower than Windows Vista)

Step 4

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.

  • HKEY_CURRENT_USER\Software\{random}

Step 5

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