Analysis by: kathleenno
ALIASES:

Exploit:Java/CVE-2009-3869.M (Microsoft); Exploit-CVE2009-3869.a !! (Mcafee); Troj/ClsLdr-X (Sophos); Exploit.Java.CVE-2009-3867 (Ikarus)

 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 malware is a component of a malicious Java archive file (.JAR). It takes advantage of a stack-based buffer overflow in a function in Java Runtime Environment (JRE) that allows remote attackers to execute arbitrary code. More information can be found on the following link:

This Trojan arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

  TECHNICAL DETAILS

Tamaño del archivo 2,906 bytes
Tipo de archivo Java Class
Residente en memoria No
Fecha de recepción de las muestras iniciales 05 May 2011

Arrival Details

This Trojan arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

NOTES:

This malware is a component of a malicious Java archive file (.JAR). It takes advantage of a stack-based buffer overflow in a function in Java Runtime Environment (JRE) that allows remote attackers to execute arbitrary code. More information can be found on the following link:

  SOLUTION

Motor de exploración mínimo 8.900
Primer archivo de patrones de VSAPI 8.138.17
Primera fecha de publicación de patrones de VSAPI 05 May 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_OBFUS.WA. 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://www.oracle.com/technetwork/topics/security/whatsnew/index.html


Did this description help? Tell us how we did.