Analysis by: Kathleen Notario
 PLATFORM:

Windows 2000, XP, 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 executes the dropped file(s). As a result, malicious routines of the dropped files are exhibited on the affected system.

  TECHNICAL DETAILS

File Size: 34,816 bytes
File Type: PE
Memory Resident: No
Initial Samples Received Date: 23 Dec 2010
Payload: Drops files

Dropping Routine

This Trojan drops the following files:

  • %User Temp%\{random}.tmp - detected as TROJ_INJECT.ZKA

(Note: %User Temp% is the current user's Temp folder, which is usually C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000, XP, and Server 2003.)

It executes the dropped file(s). As a result, malicious routines of the dropped files are exhibited on the affected system.

  SOLUTION

Minimum Scan Engine: 8.900
FIRST VSAPI PATTERN FILE: 7.719.00
FIRST VSAPI PATTERN DATE: 23 Dec 2010
VSAPI OPR PATTERN File: 7.719.00
VSAPI OPR PATTERN Date: 23 Dec 2010

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

Remove malware files dropped/downloaded by TROJ_LAMECHI.D

     TROJ_INJECT.ZKA

Step 3

Scan your computer with your Trend Micro product to delete files detected as TROJ_LAMECHI.D. 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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