FBI Hacks 4,200 Computers to Remove PlugX Malware Linked to Chinese Hackers

The FBI has successfully hacked and removed PlugX malware from approximately 4,200 computers across the US in a large-scale cybersecurity operation. The malware, allegedly deployed by the China-based hacking group known as “Mustang Panda” or “Twill Typhoon,” has been used since at least 2012 to steal sensitive information from victims in the US, Asia, and Europe. 

The Department of Justice announced the takedown on Tuesday, highlighting the collaborative efforts with French law enforcement to mitigate the cyber threat and prevent further damage.

PlugX malware, which infects Windows computers via USB ports, allows hackers to gain unauthorized access and remotely execute commands on compromised systems. The malware operates stealthily in the background, enabling cybercriminals to exfiltrate data, monitor activity, and take control of infected machines. 

According to the FBI, compromised computers establish a connection with a command-and-control server operated by the attackers, with the malware’s IP address embedded directly into the code. Since September 2023, at least 45,000 US-based IP addresses have communicated with the server, indicating the widespread reach of the cyberattack.

To eliminate the malware, the FBI leveraged the same exploit used by the attackers. After gaining access to the command-and-control infrastructure, agents retrieved the IP addresses of affected devices and issued a native command that instructed PlugX to delete itself from compromised systems. 

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