{"items":[{"id":"NVI-00009999","kind":"supply_chain_event","title":"Malicious code in etherdum.rb (RubyGems)","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-f6c2-r38w-6v9x"],"plain_summary":"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.","review_status":"source_listed","control_topics":[],"public_actions":[{"summary":"Identify the exact component and deployed version, examine the linked publisher’s conditions, and retain evidence of any mitigation.","source_ids":["sr-b7e6fb244535c261368030615c2f1a6d"],"action_type":"investigate","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null}],"schema_version":"1.1.0","source_metrics":[],"why_it_matters":"Published affected context helps an owner decide what evidence to gather. This report has not examined your application.","related_sources":[{"id":"sr-b7e6fb244535c261368030615c2f1a6d","url":"https://github.com/advisories/GHSA-f6c2-r38w-6v9x","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-f6c2-r38w-6v9x","publisher":"GitHub Advisory Database","observed_at":"2026-10-31T22:07:22.853Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-b7e6fb244535c261368030615c2f1a6d"],"technology":"etherdum.rb","known_exclusions":[],"conditions_summary":"## Source: amazon-inspector (a27b2952de0064d1745d45f18fc1ab974e48cfe185b8f41e90447265be1a880f)\nThe 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","public_affected_ranges":["= 1.0.0"]}],"null_published_at":"2026-10-31T22:13:44.204Z","source_updated_at":"2026-10-06T03:31:22.000Z","source_disclosed_at":"2026-10-05T18:34:14.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"First indexed by Null; source disclosure date is shown separately.","null_first_observed_at":"2026-10-31T22:07:22.853Z"}],"next_cursor":null,"snapshot_revision":"42594"}