{"items":[{"id":"NVI-00010005","kind":"supply_chain_event","title":"Malicious code in ethereum-tx-helper (RubyGems)","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-gm98-33j2-hm68"],"plain_summary":"GitHub lists this malware advisory for ethereum-tx-helper. 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-bad7dc457f29890064a896a23f2723d9"],"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-bad7dc457f29890064a896a23f2723d9","url":"https://github.com/advisories/GHSA-gm98-33j2-hm68","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-gm98-33j2-hm68","publisher":"GitHub Advisory Database","observed_at":"2026-10-31T22:07:22.853Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-bad7dc457f29890064a896a23f2723d9"],"technology":"ethereum-tx-helper","known_exclusions":[],"conditions_summary":"## Source: amazon-inspector (e870b276b866298ef1e57e1ceff7ef4e253cb43055d0163572e25646be7b8791)\nThe gem advertises Ethereum transaction helpers but ships only an empty C stub (ext/ethereum-tx-helper/ethereum-tx-helper.c: Init_EthereumTxHelper(){}) and a tiny BIP39 word-list helper in lib. All real behavior lives in ext/ethereum-tx-helper/extconf.rb, which runs during `gem install` as the native-extension build step. extconf.rb executes an eval() of a base64-encoded Ruby payload that first fingerprints the host for analysis/CI/sandbox markers and for developer-machine signals (~/.ssh, ~/.gem/credentials, ~/.gitconfig, ~/.npmrc, ~/.bundle); on a host that looks like a real developer workstation it double-forks a detached background process, sleeps 20-40 minutes to evade sandbox timing, then curls a tarball from a bare-IP endpoint at http://45.138.122.177:8092/wgkit.tar.gz into /tmp/.w1.tgz and executes bash /tmp/.w1/wg_install.sh. The destination URL is not present in cleartext — it is reconstructed at runtime by XOR-decoding a hex blob against the 4-byte key \"usv\\x9a\", specifically to defeat static URL extraction. The package name and homepage (ethereum-tx-helper.dev) impersonate a c","public_affected_ranges":["= 1.0.0"]}],"null_published_at":"2026-10-31T22:13:44.205Z","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"}