Palo Alto Networks Unit 42 reported a self-replicating peer-to-peer worm dubbed P2PInfect that compromises exposed Redis servers by exploiting CVE-2022-0543, a critical Lua sandbox escape affecting Debian-packaged Redis deployments. The malware is written in Rust, targets both Linux and Windows, and was observed attacking Redis honeypots in Unit 42’s HoneyCloud environment. Researchers estimated that 934 internet-exposed Redis systems could be vulnerable out of more than 307,000 observed Redis instances.
The worm uses a P2P architecture to spread, exchange node lists, and deliver updated binaries, giving operators a built-in mechanism to expand the botnet and push future payloads. Unit 42 also observed scanning for additional exposed Redis hosts and port 22 for SSH, although no confirmed SSH exploitation was seen. On Windows, the malware showed persistence and defense-evasion behavior including firewall rule changes, obfuscated PowerShell, a monitor process, self-updating binaries, and deletion of the initial dropper. Binaries named miner and winminer were recovered, but researchers said they found no definitive evidence that cryptomining had been activated.

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Unit 42 discovered the first known instance of the P2PInfect peer-to-peer worm in its HoneyCloud honeypot environment. The worm targeted exposed Redis instances and exploited CVE-2022-0543 for initial access.
Unit 42 publicly reported the newly discovered Rust-based P2PInfect worm and detailed its cross-platform Linux and Windows capabilities, peer-to-peer architecture, and targeting of exposed Redis systems. The report also assessed that the botnet's auto-updating design could support future payload delivery and noted no definitive evidence of cryptomining.
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