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This malicious JavaScript may be hosted on a Web site and run when a user accesses the said Web site.

It accesses a certain Web site to download files.

As a result, the routines of the downloaded files are exhbited on the affected system. However, as of this writing, the said URL is inaccessible.

This malicious JavaScript (JScript) may be downloaded from remote sites by other malware. It may be downloaded unknowingly by a user when visiting malicious Web sites. It may also be hosted on a Web site and run when a user accesses the said Web site.

It takes advantage of the following software vulnerability to download malicious files on the affected system:

This malicious JavaScript is hosted on a Web site and run when a user accesses the said Web site.

Upon execution, it inserts an iFrame tag to target Web sites that points to certain URLs. The said iFrame tag is set to hidden to hide it from the user.

However, the said URLs are inaccessible as of this writing.

This malicious JavaScript is downloaded from remote sites or dropped by other malware.It can be downloaded unknowingly by a user when visiting malicious Web sites.It can also be hosted on a Web site and run when a user accesses the said Web site.

It accesses a certain URL to download a malicious file detected by Trend Micro as WORM_SILLY.GI.

It then executes the downloaded files. As a result, malicious routines of the downloaded files are exhibited on the affected system.

This JavaScript may be hosted on a Web site and run when a user accesses the said Web site.

It accesses Web sites to download files. As a result, malicious routines of the downloaded files may be exhibited on the affected system.