Much of the configuration is dedicated to the malware C2 mechanisms, determining the backdoors hours of activity, how often it reaches out to its C2 server, and similar functions.

A new variant of the Glupteba malware dropper is using the Bitcoin blockchain to fetch command and control (C2) server domains from Bitcoin transactions marked with OP_RETURN script opcodes.

"Then, the FBI (working with the French law enforcement agency) will send a command from the C2 server through the PlugX malware to self-delete the software from each US-based target device." ...

Another is to download the main payload, Fbot, which comes embedded with details on contacting the command and control (C2) server. The third function is to self-destruct.

“The payload has a function it calls early on that tests to see which DNS query types are able to successfully reach the C2 server.

Operators of the njRAT Remote Access Trojan (RAT) are leveraging Pastebin C2 tunnels to avoid scrutiny by cybersecurity researchers.

Mimikatz and brute-force attacks are used to scan for, store, and try out stolen credentials, and any passwords discovered are sent to the operator's command-and-control (C2) server for reuse by ...

Lightspeed Live C2+ is built for operators and engineers who must stream live events or capture feeds for post-production. With four high-performance SDI ports to maximize the flexibility of ingest, ...

CloudSorcerer communicates with these cloud services through APIs, using authentication tokens, and employs GitHub as its initial C2 server. Despite similarities to the CloudWizard APT reported in ...

Using Telegram, or other cloud services, as a C2 server is nothing new, the researchers explained, but it is dangerous, since it is difficult for security pros to differentiate between malicious ...