supply chain event / NVI-00009999 / Revision 1
Malicious code in etherdum.rb (RubyGems)
GitHub lists this malware advisory for etherdum.rb. Published version ranges and source prerequisites are shown below; this is not an inspection of a visitor’s application.
This report has not inspected your inventory, configuration, deployed build, reachability or evidence. A catalog listing and a severity score do not establish exposure or compromise.
01 / Meaning
Why it matters
Published affected context helps an owner decide what evidence to gather. This report has not examined your application.
02 / Applicability
The affected context
Affected versions, configuration prerequisites and known exclusions are public. Confirm each one against the deployed service.
etherdum.rb
source listed= 1.0.0
## Source: amazon-inspector (a27b2952de0064d1745d45f18fc1ab974e48cfe185b8f41e90447265be1a880f) The gem declares ext/etherdum.rb/extconf.rb as a native extension, but the accompanying C source is an empty Init stub and the Ruby library is a trivial word list with no cryptography. extconf.rb, which RubyGems runs automatically on `gem install`, base64-decodes and evals a Ruby payload that XOR-decodes a hardcoded URL (http://45.138.217.89:2/wgkit.tar.gz, overridable via WG_KIT_URL), downloads a tarball to /tmp/.w1.tgz, extracts it, and executes wg_install.sh over plaintext HTTP from a bare IP. Execution is wrapped in a double-forked, detached child with stdio redirected to /dev/null and a 20-40 minute sleep before firing. Anti-analysis gating skips CI environments, ephemeral/sandbox hostnames (uvm, firecracker, sandbox, vagrant, fc-vm), generated-looking usernames (uA\d+, sandbox/tester/analys/scanner), analysis paths (/opt/rubygems, /tmp, /workspace), machines with uptime under 1800 seconds, and systems lacking developer artifacts, requiring the presence of ~/.ssh, ~/.gem/credentials, ~/.bundle,.gitconfig, or.npmrc before executing. The package name typosquats 'ethereum' and the nativ
03 / Response
What to do next
- investigate
Identify the exact component and deployed version, examine the linked publisher’s conditions, and retain evidence of any mitigation.
Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system. GitHub Advisory Database
A fixed release is not deployment evidence.
Check current vendor support and compatibility. After making a change, verify the deployed build and relevant runtime conditions. Keep the evidence, owner and time. An updated lockfile alone does not prove what is running.
04 / Limits
What this report cannot establish
- Customer inventory, deployment, reachability and exploitation have not been inspected.
05 / Provenance
Sources you can inspect
Each assertion retains its source. Mirrored records may repeat one underlying publisher; additional links are not independent corroboration.
- GHSA-f6c2-r38w-6v9x ↗
GitHub Advisory Database · vendor advisory
Observed . GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.
Public revision history
Only published revisions appear here. Routine fetches do not create a material-change event.
- Revision 1 ·
First indexed by Null; source disclosure date is shown separately.