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posted by janrinok on Friday May 19 2023, @11:24PM   Printer-friendly

Malware turns home routers into proxies for Chinese state-sponsored hackers

Researchers have uncovered malicious firmware that can turn residential and small office routers into proxies for Chinese state-sponsored hackers. The firmware implant, discovered by Check Point Research, includes a full-featured backdoor that allows attackers to establish communication, issue commands, and perform file transfers with infected devices. The implant was found in TP-Link routers but could be modified to work on other router models.

The malware's main purpose is to relay traffic between infected targets and command-and-control servers, obscuring the origins and destinations of the communication. The control infrastructure was traced back to hackers associated with the Chinese government. By using a chain of infected devices, the attackers can hide the final command and control and make it difficult for defenders to detect and respond to the attack.

This technique of using routers and other IoT devices as proxies is a common tactic among threat actors. The researchers are unsure how the implant is installed on devices but suspect it could be through exploiting vulnerabilities or weak administrative credentials.

While the firmware image discovered so far only affects TP-Link devices, the modular design allows the threat actors to create images for a wider range of hardware. The article concludes with recommendations for users to check for potential infections and apply proactive mitigations such as patching routers and using strong passwords.

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  • (Score: 0) by Anonymous Coward on Sunday May 21 2023, @03:51AM (1 child)

    by Anonymous Coward on Sunday May 21 2023, @03:51AM (#1307193)

    Basic system setup for me is fail2ban, key-based logins only, and ideally run the SSH server on a non-standard port.

  • (Score: 1) by pTamok on Monday May 22 2023, @09:36AM

    by pTamok (3042) on Monday May 22 2023, @09:36AM (#1307300)

    Sounds good.

    Key/certificate-based logins can be a mixed blessing, especially when trying to keep administrative overheads manageable. When used well, they can be excellent.