TSPY_BANKER.SMUA


 ALIASES:

TrojanDownloader:Win32/Banload.AKS (Microsoft); PWS-Banker!hdd (McAfee); Downloader (Symantec); Trojan.Win32.Generic.pak!cobra (Sunbelt); Gen:Variant.Barys.1980 (FSecure)

 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:

56,832 bytes

File Type:

EXE

Memory Resident:

Yes

Initial Samples Received Date:

10 May 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 copies of itself into the affected system:

  • %Application Data%\Temp\kripton.exe

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

It creates the following folders:

  • %Application Data%\Temp
  • %Application Data%\{1MOMGYNF-O7I1-YOLO-7BB8-HSEVSQF4GTBM}

(Note: %Application Data% is the current user's Application Data folder, which is usually C:\Documents and Settings\{user name}\Application Data on Windows 2000, XP, and Server 2003, or C:\Users\{user name}\AppData\Roaming on 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
LiveSp2 = "%Application Data%\{1MOMG~1\vq1dkkqp34.exe"

Other System Modifications

This spyware adds the following registry keys:

HKEY_CURRENT_USER\SOFTWARE\Microsoft\
Windows\IComplemento

It adds the following registry entries:

HKEY_CURRENT_USER\Software\Microsoft\
Windows\IComplemento
LiveSp2 = "0.2"

HKEY_CURRENT_USER\Software\Microsoft\
Windows\IComplemento
LiveSp2CM = "%Application Data%\{1MOMG~1\vq1dkkqp34.exe"

Dropping Routine

This spyware drops the following files:

  • %Application Data%\{1MOMGYNF-O7I1-YOLO-7BB8-HSEVSQF4GTBM}\vq1dkkqp34.exe
  • %Application Data%\{1MOMGYNF-O7I1-YOLO-7BB8-HSEVSQF4GTBM}\nichan.exe
  • %Application Data%\{1MOMG~1\libmysql41.dll

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

Other Details

This spyware connects to the following possibly malicious URL:

  • http://leonardovicmend.{BLOCKED}2.f1.k8.com.br/atmp.zip
  • http://paulosgmj.{BLOCKED}9.f1.k8.com.br/membros.php
  • http://leonardovicmend.{BLOCKED}2.f1.k8.com.br/nichan.zip

This report is generated via an automated analysis system.

  SOLUTION

Minimum Scan Engine:

9.200

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.

  • In HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows
    • IComplemento

Step 4

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
    • LiveSp2 = "%Application Data%\{1MOMG~1\vq1dkkqp34.exe"
  • In HKEY_CURRENT_USER\Software\Microsoft\Windows\IComplemento
    • LiveSp2 = "0.2"
  • In HKEY_CURRENT_USER\Software\Microsoft\Windows\IComplemento
    • LiveSp2CM = "%Application Data%\{1MOMG~1\vq1dkkqp34.exe"

Step 5

Search and delete these components

[ Learn More ]
There may be some components 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.
  • %Application Data%\{1MOMGYNF-O7I1-YOLO-7BB8-HSEVSQF4GTBM}\vq1dkkqp34.exe
  • %Application Data%\{1MOMGYNF-O7I1-YOLO-7BB8-HSEVSQF4GTBM}\nichan.exe
  • %Application Data%\{1MOMG~1\libmysql41.dll

Step 6

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.
  • %Application Data%\Temp
  • %Application Data%\{1MOMGYNF-O7I1-YOLO-7BB8-HSEVSQF4GTBM}

Step 7

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