Worm spreading via RDP port 3389
It’s retro day in the world of Internet security, with an Internet worm dubbed “Morto” spreading via the Windows Remote Desktop Protocol (RDP).
F-Secure is reporting that the worm is behind a spike in traffic on Port 3389/TCP. Once it’s entered a network, the worm starts scanning for machines that have RDP enabled. Vulnerable machines get Morto copied to their local drives as a DLL, a.dll, which creates other files detailed in the F-Secure post.
SANS, which noticed heavy growth in RDP scan traffic over the weekend, says the spike in traffic is a “key indicator” of a growing number of infected hosts. Both Windows servers and workstations are vulnerable.
