This report contains a description of the more obscure, previously undocumented traits belonging to the GPCode/Glamour trojan. The code is a modified version of the Prg/Ntos family which was detailed in depth during our Encrypted Malware Analysis in November 2006. While a majority of the functionality has not changed since then, this recent variant is distinctive enough to warrant additional research. In particular, the trojan is now equipped with the ability to encrypt a victim’s files on disk. The motive for adding this feature is clearly monetary, as the victim is advised that the files will remain encrypted unless $300 is turned over to the authors, in exchange for a decryption utility.

At Secure Science Blog.

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