Name :	Worm:W32/Autorun.KK
Detection Names :	Trojan.Win32.Agent.arie
Category:	Malware
Type:	Worm
Platform:	W32

A standalone malicious program which uses computer or network resources to make complete copies of itself. May include code or other malware to damage both the system and the network.

File System Changes
Create these directories:




Network Connections
Attempts to download files from:



Attempts to connect to:




Registry Modifications
Creates these keys:

Autorun.KK is a worm that is downloaded onto the system from a remote server by a malicious PDF document.

Execution

Once downloaded onto the system, the malicious PDF document will also execute the worm, which will proceed to create the directory %programfiles%\Microsoft Common, then create a copy of itself  as %programfiles%\Microsoft Common\svchost.exe.

The worm will then use http://www.microsoft.com to check for the presence of a usable Internet connection and will then attempt to connect to http://pusto-pusto.info/[...].php?, using information on the infected machine as parameters. The website connected to may respond with further download locations, or additional instructions for the malware.

Registry

On execution, the worm will create a registry entry that allows it to execute whenever explorer.exe is launched.

Propagation

Autorun.KK can spread via Windows autorun feature and by copying itself onto other drive media: