MAL-2026-17784

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Import Source
https://github.com/ossf/malicious-packages/blob/main/osv/malicious/rubygems/dex-router-abis/MAL-2026-17784.json
JSON Data
https://api.osv.dev/v1/vulns/MAL-2026-17784
Published
2026-10-11T13:45:11Z
Modified
2026-10-11T14:30:07Z
Summary
Malicious code in dex-router-abis (RubyGems)
Details

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

Source: amazon-inspector (a8f8b62993678b4f720468a05ef91f6fdcc864dd6be78d1ffc6bd14125f18d8f)

The gem's extconf.rb (executed automatically during gem install) decodes a base64-encoded Ruby payload and executes it via a double-forked, detached process that sleeps 20-40 minutes before opening a TCP reverse shell from /bin/sh to the hardcoded remote host 45.138.12.177:8089. Execution is gated by environment checks that look for CI/sandbox/analysis indicators and probe for developer-secret artifacts (~/.ssh, ~/.gitconfig, ~/.gem/credentials, ~/.npmrc, ~/.bundle) so the payload fires only on real developer workstations with credentials present. The create_makefile stub in extconf.rb is a cover: no matching native source exists in the gem tree, and README/metadata identify the package as 'bitcoin-rpc-lite' (makefile target bitcoin_rpc_lite_native) while the published gem name is dex-router-abis, indicating a reused dropper template. Installing this gem grants the operator at 45.138.12.177:8089 interactive shell access to the installer's host with access to local SSH keys, RubyGems publishing credentials, and other developer secrets.

Database specific 
{
    "malicious-packages-origins": [
        {
            "id": "IN-MAL-2026-021345",
            "import_time": "2026-10-11T14:17:57.882244732Z",
            "modified_time": "2026-10-11T13:45:11Z",
            "sha256": "a8f8b62993678b4f720468a05ef91f6fdcc864dd6be78d1ffc6bd14125f18d8f",
            "source": "amazon-inspector",
            "versions": [
                "0.9.1"
            ]
        }
    ]
}
References
Credits

Affected packages

RubyGems / dex-router-abis

Package

Name
dex-router-abis
Purl
pkg:gem/dex-router-abis

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/dex_router_abis/extconf.rb",
            "sha256": "10218e975f54a4f11fe3954e1b584a5f05054003bf5773c3c2b8cceaa74ba763",
            "tlsh": "9751775acf8359e55aa1c0c045798012faa3ab0a50646875f3ee0868ff59b26c0f12fe"
        }
    ]
}
source 
"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/rubygems/dex-router-abis/MAL-2026-17784.json"