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JAVA_EXPL.SIB

November 19, 2012
 Analysis by: Anthony Joe Melgarejo
 ALIASES:

Exploit:Java/CVE-2012-4681.JG (Microsoft), Trojan.Maljava (Symantec), Java/Dldr.Treams.GV (Antivir)

 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

Infection Channel:

Downloaded from the Internet


This Trojan downloads a possibly malicious file from a certain URL.

This Trojan arrives as a component bundled with malware/grayware packages. It may be hosted on a website and run when a user accesses the said website.

It executes the downloaded files. As a result, malicious routines of the downloaded files are exhibited on the affected system.

  TECHNICAL DETAILS

File Size:

Varies

File Type:

Java Class

Initial Samples Received Date:

12 Nov 2012

Payload:

Downloads files

Arrival Details

This Trojan arrives as a component bundled with malware/grayware packages.

It may be hosted on a website and run when a user accesses the said website.

Download Routine

This Trojan then executes the downloaded files. As a result, malicious routines of the downloaded files are exhibited on the affected system.

NOTES:

This Trojan downloads a file from the URL specified in the applet parameter link and saves it as {Folder}\l0ve.exe. The folder can be the default download path or the default temporary file path specified by the user or the Java settings.

  SOLUTION

Minimum Scan Engine:

9.200

FIRST VSAPI PATTERN FILE:

9.524.04

FIRST VSAPI PATTERN DATE:

12 Nov 2012

VSAPI OPR PATTERN File:

9.525.00

VSAPI OPR PATTERN Date:

13 Nov 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

Close all opened browser windows

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.
  • {Folder}\l0ve.exe

Step 4

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