Analysis by: Kathleen Notario


Windows 98, ME, NT, 2000, XP, Server 2003


  • Threat Type: Trojan

  • Destructiveness: No

  • Encrypted:

  • In the wild: Yes


This JavaScript has received attention from independent media sources and/or other security firms.

To get a one-glance comprehensive view of the behavior of this Trojan, refer to the Threat Diagram shown below.

This Trojan may be downloaded from remote sites by other malware.


File Size: Varies
File Type: Script
Memory Resident: No
Payload: Downloads files

Arrival Details

This Trojan may be downloaded from remote site(s) by the following malware:


Download Routine

This Trojan downloads the file from the following URL and renames the file when stored in the affected system:

  • http://{BLOCKED}
  • http://{BLOCKED}

It saves the files it downloads using the following names:

  • %User Profile%\d1242.js - detected as JS_HCPDL.A
  • %User Temp%\129rqwlw.exe - detected as TROJ_DROPPR.TEJ

(Note: %User Profile% is the current user's profile folder, which is usually C:\Windows\Profiles\{user name} on Windows 98 and ME, C:\WINNT\Profiles\{user name} on Windows NT, and C:\Documents and Settings\{user name} on Windows 2000, XP, and Server 2003.. %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.)


Minimum Scan Engine: 8.900
VSAPI OPR PATTERN File: 7.245.00
VSAPI OPR PATTERN Date: 16 Jun 2010

Step 1

Remove malware files dropped/downloaded by JS_HCPDL.A



Step 2

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