Metacloudvip 800 Private Breach: Passwords Stolen Before Anyone Knew

HEROIC analysts identified the Metacloudvip 800 Private stealer log in September 2023, a dataset uploaded to Telegram that sat undetected long enough for attackers to exploit it before being catalogued. The log contained 6,309 records stripped from infected endpoints, including email addresses, plaintext passwords, and URLs captured at the moment of infection.

Why This Is Dangerous

The timing of stealer log exposure is what makes them especially dangerous. These files circulate in private Telegram channels before anyone outside the criminal network knows they exist. By the time researchers flag them, attackers have often already begun testing the credentials. Victims have no idea their passwords were stolen until it is too late.

What Was Exposed

• Email Addresses
• Plaintext Passwords
• URLs (captured sites the victim accessed while infected)

Why This Matters

Stolen plaintext passwords are ready to use without any additional cracking or processing. Criminals combine them with email addresses to run credential stuffing attacks across dozens of platforms at once. The result can be account takeovers on banking apps, email services, and shopping sites, leading to identity theft and financial fraud that can take months to untangle.

How Stealer Logs Work

Stealer malware infects machines silently, usually through phishing emails or software downloded from untrustworthy sources. Once running, it extracts saved credentials from browsers, grabs session cookies, and records the URLs tied to each password. This data gets bundled into a structured log and silently transmitted to the attacker's server, then often reshared in Telegram groups and underground forums for wider distribution.

Check If You Are Affected

HEROIC's free scanner checks your email address against more than 400 billion exposed records from stealer logs, data breaches, and dark web leaks. Visit HEROIC.com to run a free scan and find out if your credentials appeared in the Metacloudvip 800 Private log or any other known exposure.