gem · Malicious package advisory
Malwarezzhelloworld_socktest
MAL-2026-18126
Malicious code in zzhelloworld_socktest (RubyGems)
Details
--- _-= Per source details. Do not edit below this line.=-_ ## Source: amazon-inspector (4344ab16d08a7e38ea2f32b406453f86d792c0fa17103125ad84ffd0e39c187f) On `require "zzhelloworld_socktest"`, the library's top-level module body opens a TCP connection to the hardcoded remote endpoint 66.78.40.218:32768, reopens STDIN, STDOUT, and STDERR onto that socket, and execs `/bin/sh -i`. Loading the gem gives the operator of that remote host an interactive shell on the installing machine, with no authentication and full process privileges. The gem's stated purpose is a trivial test library, which does not match a remote-shell capability. The destination is a bare IPv4 address unrelated to any declared publisher infrastructure.
Compromised versions (7)
- 0.1.9
- 0.1.5
- 0.1.6
- 0.2.0
- 0.1.7
- 0.2.1
- 0.1.8
Any computer that installed or ran a compromised version should be considered fully compromised. Rotate every secret on that machine from a clean environment.