VirusTotal API Keys Allegedly Sold on Dark Web

Key Takeaways

• An alleged VirusTotal Enterprise API key was listed for sale on the dark web for $350.
• The listing’s claims regarding API request limits are inconsistent and unverified.
• The authenticity, ownership, and continued functionality of the key remain unconfirmed.
• Unauthorized use of an API key could lead to credential misuse, consuming legitimate quotas and potentially exposing licensed research capabilities.

A dark web seller has reportedly offered a VirusTotal Enterprise API key for $350, though the legitimacy of the claim and the key’s functionality remain unverified. The listing, highlighted in an Dark Web Informer post on October 7, includes purported request limits and payment options, but these details are drawn solely from the seller’s advertisement.

Unverified Claims and Inconsistent Quotas

The dark web post details alleged API limits of 5,000 requests per day, 300,000 per hour, and one billion per month. The seller reportedly accepts Bitcoin or Litecoin and offers an escrow service. However, these figures present inconsistencies; for instance, a 5,000 daily request limit would inherently prevent a user from reaching 300,000 requests within a single hour if both limits applied to the same activities. The advertisement does not clarify whether these numbers refer to different services, distinct quotas, or are simply inaccurate claims.

VirusTotal’s official documentation outlines API limits based on per-minute, daily, and monthly allowances, which users can monitor through their account’s API key page. This discrepancy underscores the need for thorough verification beyond a mere screenshot or brief demonstration, which cannot confirm true ownership, sustained access, or the full advertised capabilities.

The Implications of an Exposed API Key

VirusTotal differentiates between its public API, which permits 500 requests daily and four per minute, and its paid API features, where premium allowances scale with the licensed service level. Consequently, an “Enterprise” label in a sales listing does not inherently guarantee the specific features or access a buyer would receive.

API keys enable software to interact with VirusTotal programmatically, facilitating tasks like retrieving file reports, investigating suspicious domains, and integrating threat intelligence into automated security workflows. This capability is crucial for security teams conducting large-scale investigations.

Technically, VirusTotal API requests are authenticated via the x-apikey HTTP header. VirusTotal explicitly warns against sharing personal keys, as they carry the user’s privileges. Unauthorized possession of an API key could allow an illicit actor to make requests under the compromised account, subject to its permissions and quotas. This scenario represents credential misuse, rather than a direct breach of VirusTotal’s infrastructure.

Depending on the specific subscription level, such misuse could expose licensed threat research capabilities, exhaust legitimate analysts’ allowances, or both. The actual impact would vary based on the key’s access level and the endpoints utilized, as VirusTotal documents distinct quota treatments for different operations. Mere possession of a key does not equate to unrestricted access across all services.

The current report lacks details on the original account owner, the method by which the seller allegedly obtained the key, or any evidence pointing to a broader compromise. Any claims made in social media comments regarding potential sources should not be construed as confirmed findings. Furthermore, a live demonstration would only confirm momentary access, not lawful ownership or long-term availability.

What You Should Do

• Regularly audit API usage logs for any unusual or unauthorized activity.
• Investigate any unexplained spikes in API requests or access patterns that deviate from normal operations.
• Immediately revoke any API keys suspected of being compromised or exposed.
• Implement least privilege principles for all API keys, ensuring they only have access to the necessary resources.
• Consider using API gateway solutions to add an extra layer of security, including rate limiting and access control.

Disclaimer: HackersRadar reports on cybersecurity threats and incidents for informational and awareness purposes only. We do not engage in hacking activities, data exfiltration, or the hosting or distribution of stolen or leaked information. All content is based on publicly available sources.