JAVA_RHINO.AE

This Java malware uses social engineering methods to lure users into performing certain actions that may, directly or indirectly, cause malicious routines to be performed. Specifically, this malware arrives through an email campaign that makes use of Pro-Tibetan sentiments as social engineering ploy.

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

Once it successfully exploits certain vulnerability, it drops and executes other malware on the affected system. The dropped file varies depending on the affected computer's operating system.

As a result, malicious routines of the said files are exhibited on the affected system.

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.

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.

It may be downloaded from the following remote sites:

• http://dns.{BLOCKED}a.com
• http://{BLOCKED}e.serveblog.net/

Dropping Routine

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

• Unspecified Vulnerability in Java Runtime Environment

NOTES:

This malicious JAVA file may also arrive on a system by clicking malicious links on emails spammed by other malware or malicious users.

Once it successfully exploits the said vulnerability, it drops and executes the following files:

• On Windows: %User Temp%\file.tmp - detected as BKDR_SASFIS.EVL
• On Mac OS X: /tmp/file.tmp - detected as OSX_OLYX.EVL

(Note: %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.. %Temp% is the Windows Temporary folder, which is usually C:\Windows\Temp or C:\WINNT\Temp.)

As a result, malicious routines of the said files are exhibited on the affected system.