Analysis by: Sabrina Lei Sioting
 PLATFORM:

Windows 2000, Windows XP, Windows Server 2003

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

  • Threat Type: Trojan

  • Destructiveness: No

  • Encrypted: Yes

  • In the wild: Yes

  OVERVIEW

These are legitimate dynamic link library (.DLL) files whose code has been altered by another malware to serve as an autostart mechanism for other malware.

  TECHNICAL DETAILS

File Size: 10,240 bytes
File Type: DLL
Initial Samples Received Date: 09 Sep 2011

Arrival Details

This malware arrives via the following means:

  • Modified by other malware

NOTES:
These are legitimate dynamic link library (.DLL) files whose code has been altered by another malware to serve as an autostart mechanism for other malware.

  SOLUTION

Minimum Scan Engine: 9.200

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 clean files detected as PTCH_ONLINEG.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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