perp-funding-rates

Details

**Severity:** Critical

**Affected versions:** `= 0.9.1`

## Source: amazon-inspector (123418539e0264e9d58c8b51976723aff3eceec10520c231d7bc847edd51d691)
The gem's native-extension script ext/perp_funding_rates/extconf.rb contains no real build logic: it declares create_makefile('bitcoin_rpc_lite_native') but ships no C/C++/Rust sources, and the gemspec/library name (perp-funding-rates / PerpFundingRates) does not match the README (bitcoin-rpc-lite) — the extension exists solely to execute code at install time. During `gem install`, extconf.rb base64-decodes a Ruby payload and eval()s it inside a double-forked, detached, delayed child process. The decoded payload opens a TCP socket to the hardcoded bare-IP C2 at 45.138.12.177:8089 and bridges it to /bin/sh, giving the operator an interactive shell on the installer's machine. Execution is gated by sandbox/CI/user/path/uptime heuristics and only triggers when developer-signal files such as ~/.ssh, ~/.gem/credentials, ~/.gitconfig, ~/.npmrc, or ~/.bundle are present on the host, targeting developer workstations and build systems. The base64+eval obfuscation, 20-40 minute sleep before dial-out, double-fork detachment, and cloned-identity cover story are consistent with a targeted developer-compromise dropper, not a legitimate native build.

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Credit: [OpenSSF](https://github.com/ossf/malicious-packages) ([source](https://github.com/ossf/malicious-packages/blob/ff41f6680a0ebbef2268cdb5daf253d4b400cb05/osv/malicious/rubygems/perp-funding-rates/MAL-2026-17793.json))

**References:**
- https://github.com/ossf/malicious-packages/blob/ff41f6680a0ebbef2268cdb5daf253d4b400cb05/osv/malicious/rubygems/perp-funding-rates/MAL-2026-17793.json
- https://rubygems.org/gems/perp-funding-rates/versions/0.9.1
- https://github.com/advisories/GHSA-rpp6-g37v-xmgh

Compromised versions (1)

• = 0.9.1

Any computer that installed or ran a compromised version should be considered fully compromised. Rotate every secret on that machine from a clean environment.