JAVA_EXPLOYT.RO
Windows 2000, Windows Server 2003, Windows XP (32-bit, 64-bit), Windows Vista (32-bit, 64-bit), Windows 7 (32-bit, 64-bit)
![](/vinfo/imgFiles/legend.jpg)
Threat Type: Trojan
Destructiveness: No
Encrypted: Yes
In the wild: Yes
OVERVIEW
Dropped by other malware, Downloaded from the Internet
This malware is related to the Blackhole Exploit kit spam campaign on July 2013. This campaign used the birth of the Royal Baby and the controversy of the movie Ender's Game as lures. Users affected by this threat are redirected to malicious websites that exploit certain vulnerabilities to download malware onto their system. This causes the users' system to exhibit the downloaded malware's malicious routines.
To get a one-glance comprehensive view of the behavior of this Trojan, refer to the Threat Diagram shown below.
![](http://www.trendmicro.com/vinfo/images/JAVA_EXPLOYT_RO.gif)
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 arrives as a component bundled with malware/grayware packages.
TECHNICAL DETAILS
37,457 bytes
Java
25 Jul 2013
Connects to URLs/IPs, Downloads files
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 arrives as a component bundled with malware/grayware packages.
Download Routine
This Trojan takes advantage of the following software vulnerabilities to download possibly malicious files:
- CVE-2013-1493
- CVE-2013-2423
After successfully exploiting the said vulnerability, this malware connects to the following URLs to possibly download other malicious files:
- http://{BLOCKED}rds.com/topic/accidentally-results-stay.php
Trend Micro detects the dowloaded file as:
- TROJ_MEDFOS.JET
SOLUTION
9.300
10.176.09
25 Jul 2013
10.177.00
26 Jul 2013
Step 1
Before doing any scans, Windows XP, Windows Vista, and Windows 7 users must disable System Restore to allow full scanning of their computers.
Step 3
Scan your computer with your Trend Micro product to delete files detected as JAVA_EXPLOYT.RO. 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 4
Download and apply these security patches Refrain from using these products until the appropriate patches have been installed. Trend Micro advises users to download critical patches upon release by vendors.
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