arrow_back
search
close

JAVA_DLOADR.DM

October 08, 2012
 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 Java Applet is a component of a malicious Java archive file (.JAR) that is hosted in a malicious website.

  TECHNICAL DETAILS

File Size:

Varies

File Type:

Java Class

Memory Resident:

No

Initial Samples Received Date:

30 Oct 2010

Payload:

Downloads files

Other Details

This Trojan does the following:

  • Exploits an unspecified vulnerability in the Java Runtime Environment through deserialization of RMIConnectionImpl objects, allowing attackers to call system-level Java functions via the ClassLoader of a constructor that is being deserialized. More information on this vulnerability are found in this page:
  • Downloads a possibly malicious file from the domain where it is hosted after a successful exploitation of the vulnerability
  • Executes the downloaded file. As a result, malicious routines of the downloaded file are exhibited on the affected system.

  SOLUTION

Minimum Scan Engine:

8.900

VSAPI PATTERN File:

7.580.04

VSAPI PATTERN Date:

30 Oct 2010

VSAPI PATTERN Date:

10/30/2010 12:00:00 AM

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 delete files detected as JAVA_DLOADR.DM. 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.

Step 3

Download and apply this security patch Refrain from using these products until the appropriate patches have been installed. Trend Micro advises users to download critical patches upon release by vendors.


Did this description help? Tell us how we did.