JAVA_BUFFY.B
Exploit:Java/CVE-2012-0507 (Microsoft)
Windows 2000, Windows Server 2003, Windows XP (32-bit, 64-bit), Windows Vista (32-bit, 64-bit), Windows 7 (32-bit, 64-bit)
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Threat Type: Trojan
Destructiveness: No
Encrypted: Yes
In the wild: Yes
OVERVIEW
This Trojan executes when a user accesses certain websites where it is hosted.
It executes the downloaded files. As a result, malicious routines of the downloaded files are exhibited on the affected system.
It requires its main component to successfully perform its intended routine.
TECHNICAL DETAILS
Arrival Details
This Trojan executes when a user accesses certain websites where it is hosted.
Download Routine
This Trojan takes advantage of the following software vulnerabilities to download possibly malicious files:
It saves the files it downloads using the following names:
- %User Temp%\1fggd.exe
- %User Temp%\2fggd.dll
(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, or C:\Users\{user name}\AppData\Local\Temp on Windows Vista and 7.)
It then executes the downloaded files. As a result, malicious routines of the downloaded files are exhibited on the affected system.
It downloads a possibly malicious file from a certain URL. The URL where this malware downloads the said file depends on the following parameter(s) passed on to it by its components:
- ldcrlio
- t
- tt
Other Details
This Trojan requires its main component to successfully perform its intended routine.
NOTES:
The website where this malware is hosted contains the values of the parameters required by the malware.
It executes the downloaded files using the following commands:
- cmd.exe /c start %User Temp%\1fggd.exe
- regsvr32.exe /s %User Temp%\2fggd.dll
SOLUTION
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 2
Note that not all files, folders, and registry keys and entries are installed on your computer during this malware's/spyware's/grayware's execution. This may be due to incomplete installation or other operating system conditions. If you do not find the same files/folders/registry information, please proceed to the next step.
Step 3
Close all opened browser windows
Step 4
Scan your computer with your Trend Micro product to delete files detected as JAVA_BUFFY.B. 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 5
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.
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