MAL-2026-17793

See a problem?
Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/rubygems/perp-funding-rates/MAL-2026-17793.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-17793
Published
2026-10-11T13:48:06Z
Modified
2026-10-11T14:30:06Z
Summary
Malicious code in perp-funding-rates (RubyGems)
Details

-= Per source details. Do not edit below this line.=-

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.

Database specific 
{
    "malicious-packages-origins": [
        {
            "id": "IN-MAL-2026-021364",
            "import_time": "2026-10-11T14:17:59.524867754Z",
            "modified_time": "2026-10-11T13:48:06Z",
            "sha256": "123418539e0264e9d58c8b51976723aff3eceec10520c231d7bc847edd51d691",
            "source": "amazon-inspector",
            "versions": [
                "0.9.1"
            ]
        }
    ]
}
References
Credits

Affected packages

RubyGems / perp-funding-rates

Package

Name
perp-funding-rates
Purl
pkg:gem/perp-funding-rates

Affected ranges

Affected versions

0.*
0.9.1

Database specific

cwes 
[
    {
        "cweId": "CWE-506",
        "description": "The product contains code that appears to be malicious in nature.",
        "name": "Embedded Malicious Code"
    }
]
indicators 
{
    "evidence_files": [
        {
            "path": "ext/perp_funding_rates/extconf.rb",
            "sha256": "10218e975f54a4f11fe3954e1b584a5f05054003bf5773c3c2b8cceaa74ba763",
            "tlsh": "9751775acf8359e55aa1c0c045798012faa3ab0a50646875f3ee0868ff59b26c0f12fe"
        }
    ]
}
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/rubygems/perp-funding-rates/MAL-2026-17793.json"