Imagine a scenario in which communication to and from the server is protected and filtered by a firewall and does not allow TCP shell communication to take place on any listening port (both reverse and bind TCP connection). But many environments allow ping requests to be sent and received. Ping requests work on the ICMP protocol. ICMP stands for Internet Control Message Protocol; it is used by network devices’ query and error messages. ICMP differs from the widely used TCP and UDP protocols because ICMP is not used for transferring data between network devices. When a device wants to test connectivity to another device, it uses the PING tool (ICMP communication) to send an ECHO REQUEST and waits for an ECHO RESPONSE. The client ICMP agent listens for ICMP packets from a specific host and uses the data in the packet for command execution. The server ICMP agent (PingZhellClient.pl) sends ICMP packets to connect to the victim running a custom ICMP agent (PingZhellCable input) and sends it commands to execute.
There are many forms of remote access which may be used by different actors for various purposes. A red team may use remote access techniques that provide persistent access to an exploited target for the purposes of reconnaissance and lateral movement across the network. A systems administrator may use remote access to perform day to day operations on a network accessible computer. An array of techniques exist to obtain and maintain remote access across a network, including using a command and control server such as Cloud C². Common remote access techniques include reverse shells and may employ obfuscation techniques to mask the connection. See all remote access payloads.
This payload is for OMG — a platform built for covert field-use with features that enhance remote execution, stealth and forensics evasion, all while being able to quickly change your tooling on the fly.