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 drops the files.

  TECHNICAL DETAILS

File Size: 94,628 bytes
File Type: Script
Memory Resident: No
Initial Samples Received Date: 10 Nov 2010
Payload: Drops files

Installation

This Trojan creates the following folders:

  • C:\Documents and Settings\All Users\Application Data\adhhh

Dropping Routine

This Trojan drops the following files:

  • C:\Documents and Settings\All Users\Application Data\adhhh\401A0968.hta - detected as TROJ_HTADRP.L
  • C:\Documents and Settings\All Users\Application Data\adhhh\bg.jpg - non-malicious file
  • C:\Documents and Settings\All Users\Application Data\adhhh\2.dat - non-malicious file

  SOLUTION

Minimum Scan Engine: 8.900

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 JS_HTADRP.SM

    TROJ_HTADRP.L

Step 3

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.
C:\Documents and Settings\All Users\Application Data\adhhh

Step 4

Scan your computer with your Trend Micro product to delete files detected as JS_HTADRP.SM. 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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