Analysis by: Cris Nowell Pantanilla
 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 may be dropped by other malware.

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

  TECHNICAL DETAILS

File Size: 247,531 bytes
File Type: JS
Memory Resident: No
Initial Samples Received Date: 30 Mar 2012

Arrival Details

This Trojan may be dropped by the following malware:

  • TROJ_PIDIEF.ESB

Installation

This Trojan drops and executes the following files:

  • {Current Folder}\~temqp.tmp

Dropping Routine

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

  SOLUTION

Minimum Scan Engine: 9.200
FIRST VSAPI PATTERN FILE: 8.872.07
FIRST VSAPI PATTERN DATE: 30 Mar 2012
VSAPI OPR PATTERN File: 8.873.00
VSAPI OPR PATTERN Date: 30 Mar 2012

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_DASEC.A

Step 3

Search and delete this file

[ Learn More ]
There may be some component files that are hidden. Please make sure you check the Search Hidden Files and Folders checkbox in the More advanced options option to include all hidden files and folders in the search result. {Current Folder}\~temqp.tmp

Step 4

Scan your computer with your Trend Micro product to delete files detected as JS_DASEC.A. 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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