JAVA_EXPLYOT.GRR
Exploit:Java/CVE-2012-1723.I (Microsoft), Exploit.Java.CVE-2012-0507.nc (Kaspersky), Java/Exploit.CVE-2012-0507.CW trojan (ESET), Troj/JavaDl-FC (Sophos), Exploit-CVE2012-1723 (McAfee)
Windows 2000, Windows XP, Windows Server 2003
Threat Type: Trojan
Destructiveness: No
Encrypted:
In the wild: Yes
OVERVIEW
This Trojan may be hosted on a website and run when a user accesses the said website.
It requires its main component to successfully perform its intended routine.
TECHNICAL DETAILS
Arrival Details
This Trojan may be hosted on a website and run when a user accesses the said website.
Download Routine
This Trojan saves the files it downloads using the following names:
- %User Temp%\{Random File Name}.exe
(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.)
Other Details
This Trojan requires its main component to successfully perform its intended routine.
NOTES:
This is a Java class file that is used to execute an exploit code. Once successful, it may download a possibly malicious file from a certain URL.
The URL where this malware downloads the said file depends on the parameter passed on to it by its components.
SOLUTION
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_EXPLYOT.GRR 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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