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TROJ_COSMU.GX

December 13, 2013
 PLATFORM:

Windows 2000, Windows XP, Windows Server 2003

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

  • Threat Type: Trojan

  • Destructiveness: No

  • Encrypted:

  • In the wild: Yes

  OVERVIEW


This Trojan 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:

140,110 bytes

File Type:

EXE

Memory Resident:

No

Initial Samples Received Date:

13 Dec 2013

Arrival Details

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

  • %Windows%\win32dc\Silent Hill 4_serial.exe
  • %Windows%\win32dc\FlatOut cdfix.exe
  • %Windows%\win32dc\UT2004 trainer.exe
  • %Windows%\win32dc\UT2004 + cheat.exe
  • %Windows%\win32dc\UT2004 + patch.exe
  • %Windows%\win32dc\UT2004_cdfix.exe
  • %Windows%\win32dc\Half-Life 2 + codes.exe
  • %Windows%\win32dc\Half-Life 2_crack.exe
  • %Windows%\win32dc\Silent Hill 4_cdfix.exe
  • %Windows%\win32dc\Silent Hill 4 cheat.exe

(Note: %Windows% is the Windows folder, which is usually C:\Windows.)

It creates the following folders:

  • %Windows%\win32dc

(Note: %Windows% is the Windows folder, which is usually C:\Windows.)

This report is generated via an automated analysis system.

  SOLUTION

Minimum Scan Engine:

9.300

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

Search and delete this folder

[ 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.
  • %Windows%\win32dc

Step 3

Scan your computer with your Trend Micro product to delete files detected as TROJ_COSMU.GX. 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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