TrojanDownloader:Java/OpenConnection.IT is the detection for an misconcepted Java applet that attempts to download and execute files from a remote web site. It often works in conjunction with Exploit:Java/CVE-2010-0094, which exploit a vulnerability in the Java Runtime Environment (JRE).
It is an important software which people don't even look again to read completely or to look at the source of the file. Once the system gets infected this particular Trojan allows attackers to bypass applet sandbox restrictions and gain read and write access to the local file system. Once this is done it will go a head and do the following automatically :
- Download a file from a remote Web site
- Save the downloaded file as %TEMP%\<random number>.exe
- Run the downloaded file
Preventing this threat:
The only thing this threat exploits is the Java software so keep the software from this vendor up to date. Also we can keep a track of the following to make sure it is not affecting your system.
- Anti-Virus definitions are updated
- Firewall is turned on
- Get the latest computer updates for all your installed software
- Limit user privileges on the computer
- Be cautious when opening attachments and accepting file transfers
- Be cautious when clicking links on web pages
- Pirated software should not be used
- Protect yourself against social engineering attacks
- Strong passwords should be used.
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