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JAVA_AGENT.CS

October 09, 2012
 PLATFORM:

Windows 2000, Windows XP, Windows 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 takes advantage of the following software vulnerabilities to download possibly malicious files:

  • Vulnerability in certain versions of The Java Runtime Environment (JRE)

This Trojan may arrive bundled with malware packages as a malware component.

  TECHNICAL DETAILS

File Size:

11,753 bytes

Memory Resident:

No

Initial Samples Received Date:

07 Nov 2011

Payload:

Downloads files

Arrival Details

This Trojan may arrive bundled with malware packages as a malware component.

Download Routine

This Trojan takes advantage of the following software vulnerabilities to download possibly malicious files:

  • Vulnerability in certain versions of The Java Runtime Environment (JRE)

Other Details

More information on this vulnerability can be found below:

NOTES:
Upon successfully exploiting the said vulnerability, this Trojan calls a function from its bundled Java class, vload.class to execute another Java class, vlocal.class, which is embedded in its code. Vlocal.class attempts to download and execute a possibly malicious file on the affected system.

  SOLUTION

Minimum Scan Engine:

9.200

FIRST VSAPI PATTERN FILE:

8.556.09

FIRST VSAPI PATTERN DATE:

07 Nov 2011

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_AGENT.CS. 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. http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-5353


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