What exactly is Flame?
A worm? A backdoor? What does it do?
Flame is a sophisticated attack toolkit, which is a lot more complex than Duqu. It is a backdoor, a Trojan, and it has worm-like features, allowing it to replicate in a local network and on removable media if it is commanded so by its master.
The initial point of entry of Flame is unknown - we suspect it is deployed through targeted attacks; however, we haven’t seen the original vector of how it spreads. We have some suspicions about possible use of the MS10-033 vulnerability, but we cannot confirm this now.
Once a system is infected, Flame begins a complex set of operations, including sniffing the network traffic, taking screenshots, recording audio conversations, intercepting the keyboard, and so on. All this data is available to the operators through the link to Flame’s command-and-control servers.
Later, the operators can choose to upload further modules, which expand Flame’s functionality. There are about 20 modules in total and the purpose of most of them is still being investigated.http://www.securelist.com/en/blog/208193522/The_Flame_Questions_and_Answers