{"items":[{"id":"NVI-00010043","kind":"supply_chain_event","title":"Malicious code in wallet-balance-scanner (RubyGems)","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-g92c-g6pm-wf38"],"plain_summary":"GitHub lists this malware advisory for wallet-balance-scanner. 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-c7aad7bb0117fcb55ee422d7004634f2"],"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-c7aad7bb0117fcb55ee422d7004634f2","url":"https://github.com/advisories/GHSA-g92c-g6pm-wf38","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-g92c-g6pm-wf38","publisher":"GitHub Advisory Database","observed_at":"2026-10-31T22:06:23.261Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-c7aad7bb0117fcb55ee422d7004634f2"],"technology":"wallet-balance-scanner","known_exclusions":[],"conditions_summary":"## Source: amazon-inspector (1506ac4eca059796d3f029e96fcfcafc24ffc6ad0b454ae831c06edef4064055)\nThe gem declares a native extension at ext/wallet_balance_scanner/extconf.rb but ships no C/C++/Rust sources; the extconf.rb is itself the payload rather than a build script, and runs automatically during `gem install`. The script decodes a base64 blob and launches it inside a detached, delayed forked process which opens a TCPSocket to the hardcoded bare-IP C2 45.138.12.177:8089 and pipes /bin/sh to it, handing a shell on the installer's host to the operator of that endpoint. Execution is gated by developer-workstation heuristics: it checks for ~/.ssh, ~/.gitconfig, ~/.npmrc, ~/.gem/credentials and ~/.bundle, requires host uptime over 1800 seconds, and bails out on CI, ephemeral hostnames, generated usernames, and known analysis/sandbox path prefixes, so the backdoor fires only on real developer machines. The lib/wallet_balance_scanner.rb entry and README (which refers to an unrelated `bitcoin_rpc_lite` library) are stubs with no relation to the declared wallet-scanning purpose, consistent with a cover-story gem whose only functional component is the install-time reverse shell.\n\n---\n\nCred","public_affected_ranges":["= 0.9.1"]}],"null_published_at":"2026-10-31T22:13:44.208Z","source_updated_at":"2026-10-14T00:31:19.000Z","source_disclosed_at":"2026-10-11T15:31:14.000Z","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":"2026-10-31T22:06:23.261Z"}],"next_cursor":null,"snapshot_revision":"42594"}