a second dialogue box allows the threat actor to specify the ports (listed in dizhi.gif) used
it will establish a connection to the controller.
Figure 7: Dialog box for configuring ports for second stage C2
14
APT30 and the Mechanics of a Long-Running Cyber Espionage OperationSPECIAL REPORT
Figure 8: Sample victim host data sent to BACKSPACE controller
BACKSPACE CONTROLLER – BACKDOOR COMMUNICATION The BACKSPACE controller uses a modified HTTP protocol to communicate with BACKSPACE clients on victim hosts. Victim hosts send data to the controller in HTTP POST format. When the controller receives the data
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