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Trojan-Downloader:W32/Swizzor.FG


First posted on 28 December 2007.
Source: SecurityHome

Aliases :

There are no other names known for Trojan-Downloader:W32/Swizzor.FG.

Explanation :

Swizzor is a small trojan downloader that can end up on a user's system when he/she is browsing the Web. The trojan silently downloads and installs additional trojan downloaders and adware components.

This trojan variant is a PE executable file that is packed with a custom-made file compressor. Upon execution this malware tries to download a file from the following website:

The trojan uses the "KRSystem v1.0" as an user-agent ID and it accesses the website with a specially constructed URL. The downloaded files will be stored in the directory for temporary files:

where %random% stands for a randomly generated name.

If the download operation was successful, the trojan runs the downloaded files afterwards. This particular trojan variant downloads another downloader, that in its turn downloads the second level downloader. That file can download additional components and adware to an infected computer. The downloaded adware is Lop.com related.

Last update 28 December 2007

 

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