A new tool deployed in the recent Sea Turtle attacks is 'SnappyTCP,' an open-source reverse TCP shell for Linux that offers basic command and control (C2) capabilities.

Shell USA and Nutrien Ag signed off on Nov. 2, while Wilbur Ellis signed on Nov. 6. Occidental VPs signed on Nov. 10 and Nov. 16, and Dow Chemical was the last to sign the agreement on Nov. 29.

"For the [BlueKeep] exploit payload to transition from kernel mode to a traditional user-mode payload (such as reverse TCP shell callback), we were changing the system call register in a way that ...

Evading firewall restrictions was possible through reverse TCP shells and the use of a different payload to create the communication tunnel. If all went well, the adversary would log into the ...