JAVA_EXPL.FK
Trojan.Maljava (Symantec), Troj/Java-LY( Sophos)
Windows 2000, Windows Server 2003, Windows XP (32-bit, 64-bit), Windows Vista (32-bit, 64-bit), Windows 7 (32-bit, 64-bit)
Threat Type: Trojan
Destructiveness: No
Encrypted:
In the wild: Yes
OVERVIEW
This Trojan may be downloaded by other malware/grayware from remote sites. It arrives as a component bundled with malware/grayware packages. It 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
Varues bytes
Java Class
21 Jan 2013
Arrival Details
This Trojan may be downloaded by the following malware/grayware from remote sites:
- http://{BLOCKED}.{BLOCKED}.63.121/jeanfage/test.jar
It arrives as a component bundled with malware/grayware packages.
It 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, 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:
- a