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Vulnerabilities

Vulnerability · MAL-2026-17799

Malicious code in wallet-balance-scanner (RubyGems)

Published Oct 11, 2026 · catalog updated Oct 13, 2026 · Malicious code in wallet-balance-scanner

Open the advisory

Exploitation likelihood is not on this record for MAL-2026-17799. A missing EPSS score is not a low risk. Compare Malicious code in wallet-balance-scanner with the linked advisory before you change production.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (Malicious code in wallet-balance-scanner).
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
  • EPSS is missing. A missing score is not a low risk.
Severity
Unknown—
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
Awaiting synchronization with FIRST
Remediation
Not established
Affected products
RubyGems wallet-balance-scanner

--- _-= Per source details. Do not edit below this line.=-_ ## Source: amazon-inspector (1506ac4eca059796d3f029e96fcfcafc24ffc6ad0b454ae831c06edef4064055) The 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 . 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 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. ## Source: ossf-package-analysis (c307a3154873fc791254b5f8fd91803e64e5b49c8ec114a2eadcee895614ab42) The OpenSSF Package Analysis project identified 'wallet-balance-scanner' @ 0.9.1 (rubygems) as malicious. It is considered malicious because: - The package executes one or more commands associated with malicious behavior.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • RubyGems wallet-balance-scanner0.9.1

How to fix MAL-2026-17799

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

Exploitation likelihood is not on this record for MAL-2026-17799. A missing EPSS score is not a low risk. Compare Malicious code in wallet-balance-scanner with the linked advisory before you change production.

Which versions are affected?

Compare what you have installed with 0.9.1. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS is not on this record yet. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Oct 11, 2026 · OpenSSF OSV / OSV Scanner

    Detected

    --- _-= Per source details. Do not edit below this line.=-_ ## Source: amazon-inspector (1506ac4eca059796d3f029e96fcfcafc24ffc6ad0b454ae831c06edef4064055) The 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 . The script decodes a base64 blob and l

  2. Oct 13, 2026 · OpenSSF OSV / OSV Scanner

    Updated

    --- _-= Per source details. Do not edit below this line.=-_ ## Source: amazon-inspector (1506ac4eca059796d3f029e96fcfcafc24ffc6ad0b454ae831c06edef4064055) The 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 . The script decodes a base64 blob and l

Sources

References

Freshness

Last verified in this catalog Oct 13, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.