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Trojan.Downloader.JS.Agent.F

LOW
LOW
~1.5 kbytes
()

Symptoms

There are no obvious symptoms until the malware manages to infiltrate teh system.

Removal instructions:

Keep updated the software installed on your computer.

You can disable the ActiveX control related to this vulnerability by setting the kill bit for the following CLSID:

    { BD96C556-65A3-11D0-983A-00C04FC29E36 }

More information about setting a killbit can be found here.

Please let BitDefender delete the infected files.

Analyzed By

Dana Stanut, virus researcher

Technical Description:

    This javascript file is another exploit for a vulnerability in the Microsoft Data Access Components (MDAC) function. Its purpose is to insert a link to a javascript and a bunch of iframes into once clean html files. A few examples of the iframes are given below:
    iframe width=0 height=0 src=hxxp://21[removed].cn/Xunlei.htm
    iframe width=0 height=0 src=hxxp://21[removed].cn/StormII.htm
    iframe width=0 height=0 src=hxxp://21[removed].cn/Yahoo.htm
    These iframes lead to other exploits, but when this description was made the links were not active anymore.

    More details about the exploited vulnerability can be found here MS06-014