654684.7z May 2026

Block port 445 at the network perimeter to prevent lateral movement.

The attacker scans a target network for port 445 and verifies if SMBv1 is enabled. 654684.7z

Once memory is controlled, DoublePulsar is installed to act as a listener. Block port 445 at the network perimeter to

Look for unusual lsass.exe or services.exe behavior, which are common targets for shellcode injection. 654684.7z

Apply the MS17-010 security update immediately on all legacy systems.

The exploit sends specially crafted packets to the target, causing a buffer overflow in the kernel.