For a few weeks now, a new command has been added in Koobface's C&C.
STARTONCEIMG|http://img119.imageshack.us/img119/116/p22157446.jpg|193854730d993dfgdfjkng345
This small picture has a size of 19.439 Bytes (Bitmap is only 999 Bytes). The command decrypts extra data with the key (193854730d993dfgdfjkng345). This is the decrypt routine:
The malware is known as Trojan-PSW.Win32.LdPinch, a password stealer.
MD5: 4EB90BA3A88369A12DD48ED276778228
virustotal.com
Edit: imageshack.us was contacted, the picture has been removed