JAVA_YOMENK.A
Java/TrojanDownloader.Agent.NDT trojan (Eset: NOD32), Java/Agent.QI!tr.dldr (Fortinet)
Windows 2000, Windows XP, Windows Server 2003
![](/vinfo/imgFiles/legend.jpg)
Threat Type: Trojan
Destructiveness: No
Encrypted: Yes
In the wild: Yes
OVERVIEW
Downloaded from the Internet
This is used as a component of other malware. It exploits a vulnerability in several versions of Oracle Java Runtime Environment (JRE) component. It allows this Trojan to execute arbitrary codes on the affected system.
This Trojan 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
4,108 bytes
Java Class
No
13 Sep 2012
Arrival Details
This Trojan may be hosted on a website and run when a user accesses the said website.
Download Routine
This Trojan connects to the following website(s) to download and execute a malicious file:
- {parameter1}/api.php?key=1234&computer=1234&tool=0&page=0&user=&pass={parameter2}
It then executes the downloaded files. As a result, malicious routines of the downloaded files are exhibited on the affected system.
Information Theft
This Trojan accepts the following parameters:
- "koy"
- "url"
- "panel"
NOTES:
This malware is used as a component of other malware. It exploits a vulnerability in the Java Runtime Environment component in Oracle Java SE JDK and JRE 7 and 6 Update 27 and earlier allows remote untrusted Java Web Start applications and untrusted Java applets to affect confidentiality, integrity, and availability via unknown vectors related to Scripting.
More details on the vulnerability can be found here:
- http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2011-3544
SOLUTION
9.200
9.390.04
13 Sep 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
Scan your computer with your Trend Micro product to delete files detected as JAVA_YOMENK.A. 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 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/javacpuoct2011-443431.html
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