supply chain event / NVI-00010800 / Revision 1
Malicious code in tron-rb (RubyGems)
GitHub lists this malware advisory for tron-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.
tron-rb
source listed= 1.0.0
## Source: amazon-inspector (a483b2d8f8273b5dca3a95d449d762cdfe9d79e8aea485cb89673c469e4cda6f) The gem advertises TRON protocol helpers but ships only a 45-byte empty C stub (ext/tron-rb/tron-rb.c) and a hardcoded word-list library module; its sole operative code path is in ext/tron-rb/extconf.rb. On gem install, extconf.rb base64-decodes and eval's a Ruby payload that reconstructs a destination URL by XOR'ing a hex byte array against a 4-byte key, resolving to http://45.138.17.177:8092/wgkit.tar.gz. Before firing, the payload applies sandbox/analysis evasion: it bails out on CI environment variables, ephemeral hostnames matching uvm/firecracker/sandbox/vagrant, generated-looking usernames (uA\d+/sandbox/tester/analys/scanner), analysis working-directory prefixes (/opt/rubygems, /tmp/, /workspace/), machine uptime under 30 minutes, and hosts missing developer artifacts (~/.ssh, ~/.gitconfig, ~/.npmrc, ~/.gem/credentials, ~/.bundle). If the gating passes, it double-forks a detached, I/O-nulled process that sleeps 20-40 minutes, then runs curl against the bare-IP URL to download /tmp/.w1.tgz, extracts it to /tmp/.w1, and executes bash /tmp/.w1/wg_install.sh - all before create_makefi
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-pfxv-45h9-p87w ↗
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.