Analysis by: Cris Nowell Pantanilla
ALIASES:

Trojan.Win32.Buzus.gasl (Kaspersky); VirTool:Win32/Injector.gen!AK (Microsoft)

 PLATFORM:

Windows 2000, Windows XP, Windows Server 2003

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

  • Threat Type: Trojan

  • Destructiveness: No

  • Encrypted: No

  • In the wild: Yes

  OVERVIEW

This Trojan checks the presence of certain files.

This Trojan may arrive bundled with malware packages as a malware component. It arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

It may be injected into processes running in memory.

  TECHNICAL DETAILS

File Size: 91,136 bytes
File Type: EXE
Memory Resident: No
Initial Samples Received Date: 09 Oct 2008

Arrival Details

This Trojan may arrive bundled with malware packages as a malware component.

It 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 Trojan may be injected into processes running in memory.

NOTES:

It checks the presence of the following files:

  • %System%\drivers\sice.sys
  • %System%\drivers\ntice.sys
  • %System%\drivers\syser.sys
  • %System%\drivers\winice.sys
  • %System%\drivers\sice.vxd
  • %System%\drivers\winice.vxd
  • %System%\winice.vxd
  • %System%\vmm32\winice.vxd
  • %System%\sice.vxd
  • %System%\vmm32\sice.vxd

  SOLUTION

Minimum Scan Engine: 8.900
FIRST VSAPI PATTERN FILE: 5.590.14
FIRST VSAPI PATTERN DATE: 09 Oct 2008

Step 1

For Windows XP and Windows Server 2003 users, before doing any scans, please make sure you disable System Restore to allow full scanning of your computer.

Step 2

Scan your computer with your Trend Micro product to delete files detected as TROJ_BUZUS.AIU. 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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